Fluid and Electrolyte Nur 112

The home health nurse is caring for a patient with a diagnosis of acute immunodeficiency syndrome (AIDS) who has chronic diarrhea. Which assessments should the nurse use to detect the fluid and electrolyte imbalances for which the patient has high risk? (Select all that apply.) a. Bilateral ankle edema b. Weaker leg muscles than usual c. Postural blood pressure and heart rate d. Positive Trousseau's sign e. Flat neck veins when upright f. Decreased patellar reflexes

(B, C, D) Chronic diarrhea has high risk of causing ECV deficit, hypokalemia, hypocalcemia, and hypomagnesemia because it increases fecal excretion of sodium-containing fluid, potassium, calcium, and magnesium. Appropriate assessments include postural blood pressure and heart rate for ECV deficit; weaker leg muscles than usual for hypokalemia; and positive Trousseau's sign for hypocalcemia and hypomagnesemia. Bilateral ankle edema is a sign of ECV excess, which is not likely with chronic diarrhea. Flat neck veins when upright is a normal finding. Decreased patellar reflexes is associated with hypermagnesemia, which is not likely with chronic diarrhea.

The health care provider has ordered a hypotonic intravenous (IV) solution to be administered. Which IV bag will the nurse prepare? a. 0.45% sodium chloride (1/2 NS) b. 0.9% sodium chloride (NS) c. Lactated Ringer's (LR) d. Dextrose 5% in Lactated Ringer's (D5LR)

ANS: A 0.45% sodium chloride is a hypotonic solution. NS and LR are isotonic. D5LR is hypertonic

A nurse is caring for a patient with peripheral intravenous (IV) therapy. Which task will the nurse assign to the nursing assistive personnel? a. Recording intake and output b. Regulating intravenous flow rate c. Starting peripheral intravenous therapy d. Changing a peripheral intravenous dressing

ANS: A A nursing assistive personnel (NAP) can record intake and output. An RN cannot delegate regulating flow rate, starting an IV, or changing an IV dressing to an NAP.

The nurse is admitting an older adult with decompensated congestive heart failure. The nursing assessment reveals adventitious lung sounds, dyspnea, and orthopnea. The nurse should question which doctor's order? A. Intravenous (IV) 500 mL of 0.9% NaCl at 125 mL/hr B.Furosemide (Lasix) 20 mg PO now C. Oxygen via face mask at 8 L/min D. KCl 20 mEq PO two times per day

ANS: A A patient with decompensated heart failure has extracellular fluid volume (ECV) excess. The IV of 0.9% NaCl is normal saline, which should be questioned because it would expand ECV and place an additional load on the failing heart. Diuretics such as furosemide are appropriate to decrease the ECV during heart failure. Increasing the potassium intake with KCl is appropriate, because furosemide increases potassium excretion. Oxygen administration is appropriate in this situation of near pulmonary edema from ECV excess.

The patient has an intravenous (IV) line and the nurse needs to remove the gown. In which order will the nurse perform the steps, starting with the first one? 1. Remove the sleeve of the gown from the arm without the IV. 2. Remove the sleeve of the gown from the arm with the IV. 3. Remove the IV solution container from its stand. 4. Pass the IV bag and tubing through the sleeve. a. 1, 2, 3, 4 b. 2, 3, 4, 1 c. 3, 4, 1, 2 d. 4, 1, 2, 3

ANS: A Change regular gowns by following these steps for maximum speed and arm mobility: (1) To remove a gown, remove the sleeve of the gown from the arm without the IV line, maintaining the patient's privacy. (2) Remove the sleeve of the gown from the arm with the IV line. (3) Remove the IV solution container from its stand, and pass it and the tubing through the sleeve. (If this

Nurses should be alert for increased fluid requirements in which circumstance? A. Fever B. Mechanical Ventilation C. Congestive Heart Failure D. Increased intracranial pressure

ANS: A Fever leads to great insensible fluid loss in young children because of increased body surface area relative to fluid volume. The mechanically ventilated child has decreased fluid requirements. Congestive heart failure is a case of fluid overload in children. Increased intracranial pressure does not lead to increased fluid requirements in children.

The nurse is selecting a site to begin an intravenous infusion on a 2-year-old child. The superficial veins on his hand and arm are not readily visible. What intervention should increase the visibility of these veins? a. Gently tap over the site. b. Apply a cold compress to the site. c. Raise the extremity above the level of the body. d. Use a rubber band as a tourniquet for 5 minutes.

ANS: A Gently tapping the site can sometimes cause the veins to be more visible. This is done before the skin is prepared. Warm compresses (not cold) may be useful. The extremity is held in a dependent position. A tourniquet may be helpful, but if too tight, it could cause the vein to burst when punctured. Five minutes is too long.

The nurse administers an intravenous (IV) hypertonic solution to a patient. In which direction will the fluid shift? a.From intracellular to extracellular b.From extracellular to intracellular c.From intravascular to intracellular d.From intravascular to interstitial

ANS: A Hypertonic solutions will move fluid from the intracellular to the extracellular (intravascular). A hypertonic solution has a concentration greater than normal body fluids, so water will shift out of cells because of the osmotic pull of the extra particles. Movement of water from the extracellular (intravascular) into cells (intracellular) occurs when hypotonic fluids are administered. Distribution of fluid between intravascular and interstitial spaces occurs by filtration, the net sum of hydrostatic and osmotic pressures.

The nurse is calculating intake and output on a patient. The patient drinks 150 mL of orange juice at breakfast, voids 125 mL after breakfast, vomits 250 mL of greenish fluid, sucks on 60 mL of ice chips, and for lunch consumes 75 mL of chicken broth. Which totals for intake and output will the nurse document in the patient's medical record? a. Intake 255; output 375 b. Intake 285; output 375 c. Intake 505; output 125 d. Intake 535; output 125

ANS: A Intake = 150 mL of orange juice, 60 mL of ice chips (but only counts as 30 since ice chips are half of the amount), and 75 mL of chicken broth; 150 + 30 + 75 = 255. Output = 125 mL of urine (void) and 250 mL of vomitus; 125 + 250 = 375.

A patient has dehydration. While planning care, the nurse considers that the majority of the patient's total water volume exists in with compartment? a.Intracellular b.Extracellular c.Intravascular d.Transcellular

ANS: A Intracellular (inside the cells) fluid accounts for approximately two thirds of total body water. Extracellular (outside the cells) is approximately one third of the total body water. Intravascular fluid (liquid portion of the blood) and transcellular fluid are two major divisions of the extracellular compartment.

What condition is often associated with severe diarrhea? a. Metabolic acidosis b. Metabolic alkalosis c. Respiratory acidosis d. Respiratory alkalosis

ANS: A Metabolic acidosis results from the increased absorption of short-chain fatty acids produced in the colon. There is an increase in lactic acid from tissue hypoxia secondary to hypovolemia. Bicarbonate is lost through the stool. Ketosis results from fat metabolism when glycogen stores are depleted. Metabolic alkalosis and respiratory alkalosis do not occur from severe diarrhea.

Ongoing fluid losses can overwhelm the childs ability to compensate, resulting in shock. What early clinical sign precedes shock? a. Tachycardia b. Slow respirations c. Warm, flushed skin d. Decreased blood pressure

ANS: A Shock is preceded by tachycardia and signs of poor tissue perfusion and decreased pulse oximetry values. Respirations are increased as the child attempts to compensate. As a result of the poor peripheral circulation, the child has skin that is cool and mottled with decreased capillary refilling after blanching. In children, lowered blood pressure is a late sign and may accompany the onset of cardiovascular collapse.

The nurse is reviewing laboratory results. Which cation will the nurse observe is the mostabundant in the blood? a.Sodium b.Chloride c.Potassium d.Magnesium

ANS: A Sodium is the most abundant cation in the blood. Potassium is the predominant intracellular cation. Chloride is an anion (negatively charged) rather than a cation (positively charged). Magnesium is found predominantly inside cells and in bone.

What laboratory finding should the nurse expect in a child with an excess of water? a. Decreased hematocrit b. High serum osmolality c. High urine specific gravity d. Increased blood urea nitrogen

ANS: A The excess water in the circulatory system results in hemodilution. The laboratory results show a falsely decreased hematocrit. Laboratory analysis of blood that is hemodiluted reveals decreased serum osmolality and blood urea nitrogen. The urine specific gravity is variable relative to the childs ability to correct the fluid imbalance.

Four patients arrive at the emergency department at the same time. Which patient will the nurse see first? a. An infant with temperature of 102.2° F and diarrhea for 3 days b. A teenager with a sprained ankle and excessive edema c. A middle-aged adult with abdominal pain who is moaning and holding her stomach d. An older adult with nausea and vomiting for 3 days with blood pressure 112/60

ANS: A The infant should be seen first. An infant's proportion of total body water (70% to 80% total body weight) is greater than that of children or adults. Infants and young children have greater water needs and immature kidneys. They are at greater risk for extracellular volume deficit and hypernatremia because body water loss is proportionately greater per kilogram of weight. A teenager with excessive edema from a sprained ankle can wait. A middle-aged adult moaning in pain can wait as can an older adult with a blood pressure of 112/60.

A patient is experiencing respiratory acidosis. Which organ system is responsible for compensation in this patient? a. Renal b. Endocrine c. Respiratory d. Gastrointestinal

ANS: A The kidneys (renal) are responsible for respiratory acidosis compensation. A problem with the respiratory system causes respiratory acidosis, so another organ system (renal) needs to compensate. Problems with the gastrointestinal and endocrine systems can cause acid-base imbalances, but these systems cannot compensate for an existing imbalance.

The nurse is caring for a group of patients. Which patient will the nurse see first? a. A patient with D5W hanging with the blood b. A patient with type A blood receiving type O blood c. A patient with intravenous potassium chloride that is diluted d. A patient with a right mastectomy and an intravenous site in the left arm

ANS: A The nurse will see the patient with D5W and blood to prevent a medication error. When preparing to administer blood, prime the tubing with 0.9% sodium chloride (normal saline) to prevent hemolysis or breakdown of RBCs. All the rest are normal. A patient with type A blood can receive type O. Type O is considered the universal donor. A patient with a mastectomy should have the IV in the other arm. Potassium chloride should be diluted, and it is never given IV push.

The nurse is teaching about the process of passively moving water from an area of lower particle concentration to an area of higher particle concentration. Which process is the nurse describing? a.Osmosis b.Filtration c.Diffusion d.Active transport

ANS: A The process of moving water from an area of low particle concentration to an area of higher particle concentration is known as osmosis. Filtration is mediated by fluid pressure from an area of higher pressure to an area of lower pressure. Diffusion is passive movement of electrolytes or other particles down the concentration gradient (from areas of higher concentration to areas of lower concentration). Active transport requires energy in the form of adenosine triphosphate

What flush solution is recommended for intravenous catheters larger than 24 gauge? a. Saline b. Heparin c. Alteplase d. Heparin and saline combination

ANS: A The recommended solution for flushing venous access devices is saline. The turbulent flow flush with saline is effective for catheters larger than 24 gauge. The use of heparin does not increase the longevity of the venous access device. In 24-gauge catheters, heparin may offer an advantage. Alteplase is used for treating catheter- related occlusions in children. The heparin and saline combination does not offer any advantage over saline or heparin individually.

A nurse is caring for a diabetic patient with a bowel obstruction and has orders to ensure that the volume of intake matches the output. In the past 4 hours, the patient received dextrose 5% with 0.9% sodium chloride through a 22-gauge catheter infusing at 150 mL/hr and has eaten 200 mL of ice chips. The patient also has an NG suction tube set to low continuous suction that had 300-mL output. The patient has voided 400 mL of urine. After reporting these values to the health care provider, which order does the nurse anticipate? a. Add a potassium supplement to replace loss from output. b. Decrease the rate of intravenous fluids to 100 mL/hr. c. Administer a diuretic to prevent fluid volume excess. d. Discontinue the nasogastric suctioning.

ANS: A The total fluid intake and output equals 700 mL, which meets the provider goals. Patients with nasogastric suctioning are at risk for potassium deficit, so the nurse would anticipate a potassium supplement to correct this condition. Remember to record half the volume of ice chips when calculating intake. The other measures would be unnecessary because the net fluid volume is equal.

A nurse is assessing clients on a medical-surgical unit. Which client is at risk for hypokalemia? a. Client with pancreatitis who has continuous nasogastric suctioning b. Client who is prescribed an angiotensin-converting enzyme (ACE) inhibitor c. Client in a motor vehicle crash who is receiving 6 units of packed red blood cells d. Client with uncontrolled diabetes and a serum pH level of 7.33

ANS: A A client with continuous nasogastric suctioning would be at risk for actual potassium loss leading to hypokalemia. The other clients are at risk for potassium excess or hyperkalemia.

A nurse assesses a client who is prescribed a medication that inhibits angiotensin I from converting into angiotensin II (angiotensin-converting enzyme [ACE] inhibitor). For which expected therapeutic effect should the nurse assess? a. Blood pressure decrease from 180/72 mm Hg to 144/50 mm Hg b. Daily weight increase from 55 kg to 57 kg c. Heart rate decrease from 100 beats/min to 82 beats/mind. d. Respiratory rate increase from 12 breaths/min to 15 breaths/min

ANS: A ACE inhibitors will disrupt the reninangiotensin II pathway and prevent the kidneys from reabsorbing water and sodium. The kidneys will excrete more water and sodium, decreasing the clients blood pressure.

In what condition should the nurse be alert for altered fluid requirements in children?(Select all that apply.) a. Oliguric renal failure b. Increased intracranial pressure c. Mechanical ventilation d. Compensated hypotension e. Tetralogy of Fallot f. Type 1 diabetes mellitus

ANS: A, B, C The nurse should recognize that conditions such as oliguric renal failure, increased intracranial pressure, and mechanical ventilation can cause an increase or a decrease in fluid requirements. Conditions such as hypotension, tetralogy of Fallot, and diabetes mellitus (type 1) do not cause an alteration in fluid requirements.

The nurse is preparing a presentation on compensated, decompensated, and irreversible shock in children. What clinical manifestations related to decompensated shock should the nurse include? (Select all that apply.) a. Tachypnea b. Oliguria c. Confusion d. Pale extremities e. Hypotension f. Thready pulse

ANS: A, B, C, D As shock progresses, perfusion in the microcirculation becomes marginal despite compensatory adjustments, and the signs are more obvious. Signs include tachypnea, oliguria, confusion, and pale extremities, as well as decreased skin turgor and poor capillary filling. Hypotension and a thready pulse are clinical manifestations of irreversible shock.

A nurse is assessing clients on a medical-surgical unit. Which clients are at increased risk for hypophosphatemia? (Select all that apply.) a. A 36-year-old who is malnourished b. A 42-year-old with uncontrolled diabetes c. A 50-year-old with hyperparathyroidism d. A 58-year-old with chronic renal failure e. A 76-year-old who is prescribed antacids

ANS: A, B, E Clients at risk for hypophosphatemia include those who are malnourished, those with uncontrolled diabetes mellitus, and those who use aluminum hydroxidebased or magnesium-based antacids. Hyperparathyroidism and chronic renal failure are common causes of hyperphosphatemia.

1. A nurse assesses a client who is admitted for treatment of fluid overload. Which manifestations should the nurse expect to find? (Select all that apply.) a. Increased pulse rate b. Distended neck veins c. Decreased blood pressure d. Warm and pink skine. Skeletal muscle weakness

ANS: A, B, E Manifestations of fluid overload include increased pulse rate, distended neck veins, increased blood pressure, pale and cool skin, and skeletal muscle weakness.

The patient has recent bilateral, above-the-knee amputations and has developed C. difficile diarrhea. What assessments should the nurse use to detect ECV deficit in this patient? (Select all that apply.) a.Test for skin tenting. b.Measure rate and character of pulse. c.Measure postural blood pressure and heart rate. d.Check Trousseau's sign. e.Observe for flatness of neck veins when upright. f.Observe for flatness of neck veins when supine.

ANS: A, B, F ECV deficit is characterized by skin tenting; rapid, thready pulse; and flat neck veins when supine, which can be assessed in this patient. Although ECV deficit also causes postural blood pressure drop with tachycardia, this assessment is not appropriate for a patient with recent bilateral, above-the-knee amputations. Trousseau's sign is a test for increased neuromuscular excitability, which is not characteristic of ECV deficit. Flat neck veins when upright is a normal finding.

A nurse is caring for clients with electrolyte imbalances on a medical-surgical unit. Which clinical manifestations are correctly paired with the contributing electrolyte imbalance? (Select all that apply.) a. Hypokalemia Flaccid paralysis with respiratory depression b. Hyperphosphatemia Paresthesia with sensations of tingling and numbness c. Hyponatremia Decreased level of consciousness d. Hypercalcemia Positive Trousseaus and Chvosteks signse. Hypomagnesemia Bradycardia, peripheral vasodilation, and hypotension

ANS: A, C Flaccid paralysis with respiratory depression is associated with hypokalemia. Decreased level of consciousness is associated with hyponatremia. Paresthesia with sensations of tingling and numbness is associated with hypophosphatemia or hypercalcemia. Positive Trousseaus and Chvosteks signs are associated with hypocalcemia or hyperphosphatemia. Bradycardia, peripheral vasodilation, and hypotension are associated with hypermagnesemia.

.Which assessments will alert the nurse that a patient's IV has infiltrated? (Select all that apply.) a. Edema of the extremity near the insertion site b. Reddish streak proximal to the insertion site c. Skin discolored or pale in appearance d. Pain and warmth at the insertion site e. Palpable venous cord f. Skin cool to the touch

ANS: A, C, F Infiltration results in skin that is edematous near the IV insertion site. Skin is cool to the touch and may be pale or discolored. Pain, warmth, erythema, a reddish streak, and a palpable venous cord are all symptoms of phlebitis.

A nurse is selecting a site to insert an intravenous (IV) catheter on an adult. Which actions will the nurse take? (Select all that apply.) a. Check for contraindications to the extremity. b. Start proximally and move distally on the arm. c. Choose a vein with minimal curvature. d. Choose the patient's dominant arm. e. Select a vein that is rigid. f. Avoid areas of flexion.

ANS: A, C, F The vein should be relatively straight to avoid catheter occlusion. Contraindications to starting an IV catheter are conditions such as mastectomy, AV fistula, and central line in the extremity and should be checked before initiation of IV. Avoid areas of flexion if possible. The nurse should start distally and move proximally, choosing the non-dominant arm if possible. The nurse should feel for the best location; a good vein should feel spongy, a rigid vein should be avoided because it might have had previous trauma or damage.

A nurse is assessing a client who has an electrolyte imbalance related to renal failure. For which potential complications of this electrolyte imbalance should the nurse assess? (Select all that apply.) a. Electrocardiogram changes b. Slow, shallow respirations c. Orthostatic hypotension d. Paralytic ileuse. Skeletal muscle weakness

ANS: A, D, E Electrolyte imbalances associated with acute renal failure include hyperkalemia and hyperphosphatemia. The nurse should assess for electrocardiogram changes, paralytic ileus caused by decrease bowel mobility, and skeletal muscle weakness in clients with hyperkalemia. The other choices are potential complications of hypokalemia.

A nurse is caring for a client who has the following laboratory results: potassium 3.4 mEq/L, magnesium 1.8 mEq/L, calcium 8.5 mEq/L, sodium 144 mEq/L. Which assessment should the nurse complete first? a. Depth of respirations b. Bowel sounds c. Grip strength d. Electrocardiography

ANS: AA client with a low serum potassium level may exhibit hypoactive bowel sounds, cardiac dysrhythmias, and muscle weakness resulting in shallow respirations and decreased handgrips. The nurse should assess the clients respiratory status first to ensure respirations are sufficient. The respiratory assessment should include rate and depth of respirations, respiratory effort, and oxygen saturation. The other assessments are important but are secondary to the clients respiratory status.

A nurse is assessing clients for fluid and electrolyte imbalances. Which client should the nurse assess first for potential hyponatremia? a. A 34-year-old on NPO status who is receiving intravenous D5W b. A 50-year-old with an infection who is prescribed a sulfonamide antibiotic c. A 67-year-old who is experiencing pain and is prescribed ibuprofen (Motrin) d. A 73-year-old with tachycardia who is receiving digoxin (Lanoxin)

ANS: ADextrose 5% in water (D5W) contains no electrolytes. Because the client is not taking any food or fluids by mouth (NPO), normal sodium excretion can lead to hyponatremia. The sulfonamide antibiotic, ibuprofen, and digoxin will not put a client at risk for hyponatremia.

A nurse is assessing a client with hypokalemia, and notes that the clients handgrip strength has diminished since the previous assessment 1 hour ago. Which action should the nurse take first? a. Assess the clients respiratory rate, rhythm, and depth .b. Measure the clients pulse and blood pressure. c. Document findings and monitor the client. d. Call the health care provider.

ANS: AIn a client with hypokalemia, progressive skeletal muscle weakness is associated with increasing severity of hypokalemia. The most life-threatening complication of hypokalemia is respiratory insufficiency. It is imperative for the nurse to perform a respiratory assessment first to make sure that the client is not in immediate jeopardy. Cardiac dysrhythmias are also associated with hypokalemia. The clients pulse and blood pressure should be assessed after assessing respiratory status. Next, the nurse would call the health care provider to obtain orders for potassium replacement. Documenting findings and continuing to monitor the client should occur during and after potassium replacement therapy.

A nurse begins infusing a 250-mL bag of IV fluid at 1845 on Monday and programs the pump to infuse at 50 mL/hr. At what time should the infusion be completed? a. 2300 Monday b. 2345 Monday c. 0015 Tuesday d. 0045 Tuesday

ANS: B 250 mL ÷ 50 mL/hr = 5 hr 1845 + 5 hr = 2345, which would be 2345 on Monday.

In which patient will the nurse expect to see a positive Chvostek sign? a. A 7-year-old child admitted for severe burns b. A 24-year-old adult admitted for chronic alcohol abuse c. A 50-year-old patient admitted for an acute exacerbation of hyperparathyroidism d. A 75-year-old patient admitted for a broken hip related to osteoporosis

ANS: B A positive Chvostek sign is representative of hypocalcemia or hypomagnesemia. Hypomagnesemia is common with alcohol abuse. Hypocalcemia can be brought on by alcohol abuse and pancreatitis (which also can be affected by alcohol consumption). Burn patients frequently experience extracellular fluid volume deficit. Hyperparathyroidism causes hypercalcemia. Immobility is associated with hypercalcemia

The nurse determines that a childs intravenous infusion has infiltrated. The infused solution is a vesicant. What is the most appropriate nursing action? a. Stop the infusion and apply ice. b. End the infusion and notify the practitioner. c. Slow the infusion rate and notify the practitioner. d. Discontinue the infusion and apply warm compresses.

ANS: B A vesicant causes cellular damage when even minute amounts escape into the tissue. The intravenous infusion is immediately stopped, the extremity is elevated, the practitioner is notified, and the treatment protocol is initiated. The applying of heat or ice depends on the fluid that has extravasated. The catheter is left in place until it is no longer needed.

At change-of-shift report, the nurse learns the medical diagnoses for four patients. Which patient should the nurse assess most carefully for development of hyponatremia? a. Vomiting all day and not replacing any fluid b. Tumor that secretes excessive antidiuretic hormone (ADH) c. Tumor that secretes excessive aldosterone d. Tumor that destroyed the posterior pituitary gland

ANS: B ADH causes renal reabsorption of water, which dilutes the body fluids. Excessive ADH thus causes hyponatremia. Excessive aldosterone causes ECV excess rather than hyponatremia. The posterior pituitary gland releases ADH; lack of ADH causes hypernatremia. Vomiting without fluid replacement causes ECV deficit and hypernatremia.

The nurse is preparing to give a potassium supplement. Which laboratory test should be checked before the patient receives a dose of potassium? a. Complete blood count b. Serum potassium level c. Serum sodium level d. Liver function studies.

ANS: B Contraindications to potassium replacement products include hyperkalemia from any cause. It is important to know the patient's electrolyte levels before beginning electrolyte replacement therapy. Giving potassium supplements to a patient whose serum potassium levels are already high may cause worsening of the hyperkalemia. The other options are incorrect.

What type of dehydration occurs when the electrolyte deficit exceeds the water deficit? a. isotonic dehydration b. hypotonic dehydration c. hypertonic dehydration d. hyper osmotic dehydration

ANS: B Hypotonic dehydration occurs when the electrolyte deficit exceeds the water deficit, leaving the serum hypotonic. Isotonic dehydration occurs in conditions in which electrolyte and water deficits are present in balanced proportion. Hypertonic dehydration results from water loss in excess of electrolyte loss. This is the most dangerous type of dehydration. It is caused by feeding children fluids with high amounts of solute. Hyperosmotic dehydration is another term for hypertonic dehydration.

What amount of fluid loss occurs with moderate dehydration? a. <50 ml/kg b. 50 to 90 ml/kg c. <5% total body weight d. >15% total body weight

ANS: B Moderate dehydration is defined as a fluid loss of between 50 and 90 ml/kg. Mild dehydration is defined as a fluid loss of less than 50 ml/kg. Weight loss up to 5% is considered mild dehydration. Weight loss over 15% is severe dehydration.

The nurse receives the patient's most recent blood work results. Which laboratory value is of greatest concern? a. Sodium of 145 mEq/L b. Calcium of 15.5 mg/dL c. Potassium of 3.5 mEq/L d. Chloride of 100 mEq/L

ANS: B Normal calcium range is 8.4 to 10.5 mg/dL; therefore, a value of 15.5 mg/dL is abnormally high and of concern. The rest of the laboratory values are within their normal ranges: sodium 136 to 145 mEq/L; potassium 3.5 to 5.0 mEq/L; and chloride 98 to 106 mEq/L.

The nurse observes that the patient's calcium is elevated. When checking the phosphate level, what does the nurse expect to see? a. Increased b. Decreased c. Equal to calcium d. No change in phosphate

ANS: B Phosphate will decrease. Serum calcium and phosphate have an inverse relationship. When one is elevated, the other decreases, except in some patients with end-stage renal disease.

A nurse is assessing a patient. Which assessment finding should cause a nurse to further assess for extracellular fluid volume deficit? a. Moist mucous membranes b. Postural hypotension c. Supple skin turgor d. Pitting edema

ANS: B Physical examination findings of deficit include postural hypotension, tachycardia, thready pulse, dry mucous membranes, and poor skin turgor. Pitting edema indicates that the patient may be retaining excess extracellular fluid.

The nurse assessed four patients at the beginning of the shift. Which finding should the nurse report immediately to the physician? A. Swollen ankles in patient with compensated heart failure B. Positive Chvostek's sign in patient with acute pancreatitis C. Dry mucous membranes in patient taking a new diuretic D. Constipation in patient who has advanced breast cancer

ANS: B Positive Chvostek's sign indicates increased neuromuscular excitability, which can progress to dangerous laryngospasm or seizures and thus needs to be reported first. The other assessment findings are less urgent and need further assessment. Bilateral ankle edema is a sign of ECV excess, and follow-up is needed, but the situation is not immediately life-threatening. Dry mucous membranes in a patient taking a diuretic may be associated with ECV deficit; however, additional assessments of ECV deficit are required before reporting to the physician. Constipation has many causes, including hypercalcemia and opioid analgesics, and it needs action, but not as urgently as a positive Chvostek's sign.

A nurse is administering a diuretic to a patient and teaching the patient about foods to increase. Which food choices by the patient will best indicate successful teaching? a. Milk and cheese b. Potatoes and fresh fruit c. Canned soups and vegetables d. Whole grains and dark green leafy vegetables

ANS: B Potatoes and fruits are high in potassium. Milk and cheese are high in calcium. Canned soups and vegetables are high in sodium. Whole grains and dark green leafy vegetables are high in magnesium.

A 2-year-old child is brought into the emergency department after ingesting a medication that causes respiratory depression. For which acid-base imbalance will the nurse most closely monitor this child? a. Respiratory alkalosis b. Respiratory acidosis c. Metabolic acidosis d. Metabolic alkalosis

ANS: B Respiratory depression leads to hypoventilation. Hypoventilation results in retention of CO2 and respiratory acidosis. Respiratory alkalosis would result from hyperventilation, causing a decrease in CO2 levels. Metabolic acid-base imbalance would be a result of kidney dysfunction, vomiting, diarrhea, or other conditions that affect metabolic acids.

A nurse is caring for a patient whose ECG presents with changes characteristic of hypokalemia. Which assessment finding will the nurse expect? a. Dry mucous membranes b. Abdominal distention c. Distended neck veins d. Flushed skin

ANS: B Signs and symptoms of hypokalemia are muscle weakness, abdominal distention, decreased bowel sounds, and cardiac dysrhythmias. Distended neck veins occur in fluid overload. Thready peripheral pulses indicate hypovolemia. Dry mucous membranes and flushed skin are indicative of dehydration and hypernatremia.

When caring for a child with an intravenous (IV) infusion, what is an appropriate nursing action? a. Change the insertion site every 24 hours. b. Check the insertion site frequently for signs of infiltration. c. Use a macro-dropper to facilitate reaching the prescribed flow rate. d. Avoid restraining the child to prevent undue emotional stress.

ANS: B The nursing responsibility for IV therapy is to calculate the amount to be infused in a given length of time; set the infusion rate; and monitor the apparatus frequently, at least every 1 to 2 hours, to make certain that the desired rate is maintained, the integrity of the system remains intact, the site remains intact (free of redness, edema, infiltration, or irritation), and the infusion does not stop. Insertion sites do not need to be changed every 24 hours unless a problem is found with the site. This exposes the child to significant trauma. A minidropper (60 drops/ml) is the recommended IV tubing in pediatric patients. Intravenous sites should be protected. This may require soft restraints on the child.

The nurse is teaching a parent of a 10-year-old child who will be discharged with a venous access device (VAD). What statement by the parent indicates a correct understanding of the teaching? a. I should have my child wear a protective vest when my child wants to participate in contact sports. b. I should apply pressure to the entry site to the vein, not the exit site, if the VAD is accidentally removed. c. I can expect my child to have feelings of general malaise for 1 week after the VAD is inserted. d. I should give my child a sponge bath for the first 2 weeks after the VAD is inserted; then I can allow my child to take a bath.

ANS: B The parents of a child with a VAD should be taught to apply pressure to the entry site to the vein, not the exit site, if the VAD is accidentally removed. The child should not participate in contact sports, even with a protective vest, to prevent the VAD from becoming dislodged. General malaise is a sign of an infection, not an expected finding after insertion of the VAD. The child can shower or take a bath after insertion of the VAD; the child does not need a sponge bath for any length of time.

A patient is admitted for a bowel obstruction and has had a nasogastric tube set to low intermittent suction for the past 3 days. Which arterial blood gas values will the nurse expect to observe? a. Respiratory alkalosis b. Metabolic alkalosis c. Metabolic acidosis d. Respiratory acidosis

ANS: B The patient is losing acid from the nasogastric tube so the patient will have metabolic alkalosis. Lung problems will produce respiratory alkalosis or acidosis. Metabolic acidosis will occur when too much acid is in the body like kidney failure.

What is an approximate method of estimating output for a child who is not toilet trained? a. Have parents estimate output. b. Weigh diapers after each void. c. Place a urine collection device on the child. d. Have the child sit on a potty chair 30 minutes after eating.

ANS: B Weighing diapers will provide an estimate of urinary output. Each 1 g of weight is equivalent to 1 ml of urine. Having parents estimate output would be inaccurate. It is difficult to estimate how much fluid is in a diaper. The urine collection device would irritate the childs skin. It would be difficult for a toddler who is not toilet trained to sit on a potty chair 30 minutes after eating.

After a severe auto accident, a patient has been taken to the trauma unit and has an estimated blood loss of more than 30% of his blood volume. The nurse prepares to administer which product? a. Albumin b. Whole blood c. Packed red blood cells d. Fresh frozen plasma

ANS: B A patient who has lost a massive amount (over 25%) of blood volume would receive whole blood. PRBCs are given to increase the oxygen-carrying capacity in patients with anemia, in patients with substantial hemoglobin deficits, and in patients who have lost up to 25% of their total blood volume. A patient with a coagulation disorder or a clotting-factor deficiency would receive fresh frozen plasma; albumin is used to expand fluid volume.

The nurse is preparing to transfuse a patient with a unit of packed red blood cells (PRBCs). Which intravenous solution is correct for use with the PRBC transfusion? a. 5% dextrose in water (D5W) b. 0.9% sodium chloride (NS) c. 5% dextrose in 0.45% sodium chloride (D5NS) d. 5% dextrose in lactated Ringer's solution (D5LR)

ANS: B Blood products should be given only with normal saline 0.9% because D5W will also cause hemolysis of the blood product.

A nurse is caring for a client who exhibits dehydration-induced confusion. Which intervention should the nurse implement first? a. Measure intake and output every 4 hours. b. Apply oxygen by mask or nasal cannula. c. Increase the IV flow rate to 250 mL/hr. d. Place the client in a high-Fowlers position.

ANS: B Dehydration most frequently leads to poor cerebral perfusion and cerebral hypoxia, causing confusion. Applying oxygen can reduce confusion, even if perfusion is still less than optimal. Increasing the IV flow rate would increase perfusion. However, depending on the degree of dehydration, rehydrating the client too rapidly with IV fluids can lead to cerebral edema. Measuring intake and output and placing the client in a high-Fowlers position will not address the clients problem.

A patient presents to the emergency department with reports of vomiting and diarrhea for the past 48 hours. The health care provider orders isotonic intravenous (IV) therapy. Which IV will the nurse prepare? a. 0.225% sodium chloride (1/4 NS) b. 0.45% sodium chloride (1/2 NS) c. 0.9% sodium chloride (NS) d. 3% sodium chloride (3% NaCl)

ANS: C Patients with prolonged vomiting and diarrhea become hypovolemic. A solution to replace extracellular volume is 0.9% sodium chloride, which is an isotonic solution. 0.225% and 0.45% sodium chloride are hypotonic. 3% sodium chloride is hypertonic.

The nurse is preparing to transfuse a patient with a unit of packed red blood cells (PRBCs). Which patient would be best treated with this transfusion? a. A patient with a coagulation disorder b. A patient with severe anemia c. A patient who has lost a massive amount of blood after an accident d. A patient who has a clotting-factor deficiency

ANS: B PRBCs are given to increase the oxygen-carrying capacity in patients with anemia, in patients with substantial hemoglobin deficits, and in patients who have lost up to 25% of their total blood volume. Patients with coagulation disorder or clotting-factor deficiency would receive fresh frozen plasma; a patient who has lost a massive amount of blood would receive whole blood.

A nurse is caring for a client who has a serum calcium level of 14 mg/dL. Which provider order should the nurse implement first? a. Encourage oral fluid intake. b. Connect the client to a cardiac monitor. c. Assess urinary output. d. Administer oral calcitonin (Calcimar).

ANS: B This client has hypercalcemia. Elevated serum calcium levels can decrease cardiac output and cause cardiac dysrhythmias. Connecting the client to a cardiac monitor is a priority to assess for lethal cardiac changes. Encouraging oral fluids, assessing urine output, and administering calcitonin are treatments for hypercalcemia, but are not the highest priority.

What clinical manifestations should be observed in a 2-year-old child with hypotonic dehydration? (Select all that apply.) a. Thick, doughy feel to the skin b. Slightly moist mucous membranes c. Absent tears d. Very rapid pulse e. Hyperirritability

ANS: B, C, D Clinical manifestations of hypotonic dehydration include slightly moist mucous membranes, absent tears, and a very rapid pulse. A thick, doughy feel to the skin and hyperirritability are signs of hypertonic dehydration.

The nurse is caring for a child with hypercalcemia. The nurse evaluates the child for which signs and symptoms of hypercalcemia? (Select all that apply.) a. Tetany b. Anorexia c. Constipation d. Laryngospasm e. Muscle hypotonicity

ANS: B, C, E Signs and symptoms of hypercalcemia are anorexia, constipation, and muscle hypotonicity. Tetany and laryngospasm are signs of hypocalcemia.

The nurse is caring for a child with hypernatremia. The nurse evaluates the child for which signs and symptoms of hypernatremia? (Select all that apply.) a. Apathy b. Lethargy c. Oliguria d. Intense thirst e. Dry, sticky mucos

ANS: B, C, E Signs and symptoms of hypernatremia are nausea; oliguria; and dry, sticky mucos. Apathy and lethargy are signs of hyponatremia.

A nurse develops a plan of care for a client who has a history of hypocalcemia. What interventions should the nurse include in this clients care plan? (Select all that apply.) a. Encourage oral fluid intake of at least 2 L/day. b. Use a draw sheet to reposition the client in bed. c. Strain all urine output and assess for urinary stones.d. Provide nonslip footwear for the client to use when out of bed. e. Rotate the client from side to side every 2 hours.

ANS: B, D Clients with long-standing hypocalcemia have brittle bones that may fracture easily. Safety needs are a priority. Nursing staff should use a draw sheet when repositioning the client in bed and have the client wear nonslip footwear when out of bed to prevent fractures and falls. The other interventions would not provide safety for this client.

The nurse is caring for a child with hypokalemia. The nurse evaluates the child for which signs and symptoms of hypokalemia? (Select all that apply.) a. Twitching b. Hypotension c. Hyper reflexia d. Muscle weakness e. Cardiac arrhythmias

ANS: B, D, E Signs and symptoms of hypokalemia are hypotension, muscle weakness, and cardiac arrhythmias. Twitching and hyperreflexia are signs of hyperkalemia.

During diuretic therapy, the nurse monitors the fluid and electrolyte status of the patient. Which assessment findings are symptoms of hyponatremia? (Select all that apply.) a. Red, flushed skin b. Lethargy c. Decreased urination d. Hypotension e. Stomach cramps f. Elevated temperature

ANS: B, D, E Hyponatremia is manifested by lethargy, hypotension, stomach cramps, vomiting, diarrhea, and seizures. The other options are symptoms of hypernatremia.

A nurse assesses a client who is prescribed a medication that inhibits aldosterone secretion and release. For which potential complications should the nurse assess? (Select all that apply.) a. Urine output of 25 mL/hr b. Serum potassium level of 5.4 mEq/L c. Urine specific gravity of 1.02 g/mL d. Serum sodium level of 128 mEq/L e. Blood osmolality of 250 mOsm/L

ANS: B, EAldosterone is a naturally occurring hormone of the mineralocorticoid type that increases the reabsorption of water and sodium in the kidney at the same time that it promotes excretion of potassium. Any drug or condition that disrupts aldosterone secretion or release increases the clients risk for excessive water loss (increased urine output), increased potassium reabsorption, decreased blood osmolality, and increased urine specific gravity. The client would not be at risk for sodium imbalance.

A nurse is assessing clients on a medical-surgical unit. Which adult client should the nurse identify as being at greatest risk for insensible water loss? a. Client taking furosemide (Lasix) b. Anxious client who has tachypnea c. Client who is on fluid restrictions d. Client who is constipated with abdominal pain

ANS: BInsensible water loss is water loss through the skin, lungs, and stool. Clients at risk for insensible water loss include those being mechanically ventilated, those with rapid respirations, and those undergoing continuous GI suctioning. Clients who have thyroid crisis, trauma, burns, states of extreme stress, and fever are also at increased risk. The client taking furosemide will have increased fluid loss, but not insensible water loss. The other two clients on a fluid restriction and with constipation are not at risk for fluid loss.

After teaching a client who is being treated for dehydration, a nurse assesses the clients understanding. Which statement indicates the client correctly understood the teaching? a. I must drink a quart of water or other liquid each day. b. I will weigh myself each morning before I eat or drink. c. I will use a salt substitute when making and eating my meals.d. I will not drink liquids after 6 PM so I wont have to get up at night.

ANS: BOne liter of water weighs 1 kg; therefore, a change in body weight is a good measure of excess fluid loss or fluid retention. Weight loss greater than 0.5 lb daily is indicative of excessive fluid loss. The other statements are not indicative of practices that will prevent dehydration.

When reviewing the health history of a patient, the nurse will note that a potential contraindication to potassium supplements exists if the patient has which problem? a. Burns b. Diarrhea c. Renal disease d. Cardiac tachydysrhythmias

ANS: C Potassium supplements are contraindicated in the presence of renal disease; the other conditions listed may be treated with potassium supplements.

What factor predisposes an infant to fluid imbalances? A. Decreased surface area B. Lower metabolic rate C. Immature kidney functioning D. Decreased daily exchange of extracellular fluid

ANS: C The infants kidneys are functionally immature at birth and are inefficient in excreting waste products of metabolism. Infants have a relatively high body surface area (BSA) compared with adults. This allows a higher loss of fluid to the environment. A higher metabolic rate is present as a result of the higher BSA in relation to active metabolic tissue. The higher metabolic rate increases heat production, which results in greater insensible water loss. Infants have a greater exchange of extracellular fluid, leaving them with a reduced fluid reserve in conditions of dehydration.

The nurse is assessing a patient before hanging an IV solution of 0.9% NaCl with KCl in it. Which assessment finding should cause the nurse to hold the IV solution and contact the physician? a. Weight gain of 2 pounds since last week b.Dry mucous membranes and skin tenting c.Urine output 8 mL/hr d.Blood pressure 98/58

ANS: C Administering IV potassium to a patient who has oliguria is not safe, because potassium intake faster than potassium output can cause hyperkalemia with dangerous cardiac dysrhythmias. Dry mucous membranes, skin tenting, and blood pressure 98/58 are consistent with the need for IV 0.9% NaCl. Weight gain of 2 pounds in a week does not necessarily indicate fluid overload, because it can be from increased nutritional intake. An overnight weight gain indicates a fluid gain.

The health care provider asks the nurse to monitor the fluid volume status of a heart failure patient and a patient at risk for clinical dehydration. Which is the most effective nursing intervention for monitoring both of these patients? a. Assess the patients for edema in extremities. b. Ask the patients to record their intake and output. c. Weigh the patients every morning before breakfast. d. Measure the patients' blood pressures every 4 hours.

ANS: C An effective measure of fluid retention or loss is daily weights; each kilogram (2.2 pounds) change is equivalent to 1 liter of fluid gained or lost. This measurement should be performed at the same time every day using the same scale and the same amount of clothing. Although intake and output records are important assessment measures, some patients are not able to keep their own records themselves. Blood pressure can decrease with extracellular volume (ECV) deficit but will not necessarily increase with recent ECV excess (heart failure patient). Edema occurs with ECV excess but not with clinical dehydration.

Physiologically, the child compensates for fluid volume losses by which mechanism? a. Inhibition of aldosterone secretion b. Hemoconcentration to reduce cardiac workload c. Fluid shift from interstitial space to intravascular space d. Vasodilation of peripheral arterioles to increase perfusion

ANS: C Compensatory mechanisms attempt to maintain fluid volume. Initially, interstitial fluid moves into the intravascular compartment to maintain blood volume. Aldosterone is released to promote sodium retention and conserve water in the kidneys. Hemoconcentration results from the fluid volume loss. With less circulating volume, tachycardia results. Vasoconstriction of peripheral arterioles occurs to help maintain blood pressure.

The nurse is teaching the family of a child with a long-term central venous access device about signs and symptoms of bacteremia. What finding indicates the presence of bacteremia? a. Hypertension b. Pain at the entry site c. Fever and general malaise d. Redness and swelling at the entry site

ANS: C Fever, chills, general malaise, and an ill appearance can be signs of bacteremia and require immediate intervention. Hypotension would be indicative of sepsis and possible impending cardiovascular collapse. Pain, redness, and swelling at the entry site indicate local infection.

What is the required number of milliliters of fluid needed per day for a 14-kg child? A. 800 B. 1000 C. 1200 D. 1400

ANS: C For the first 10 kg of body weight, a child requires 100 ml/kg. For each additional kilogram of body weight, an extra 50 ml is needed. 10 kg 100 ml/kg/day = 1000 ml4 kg 50 ml/kg/day = 200 ml1000 ml + 200 ml = 1200 ml/dayEight hundred to 1000 ml is too little; 1400 ml is too much.

The nurse is evaluating the effectiveness of the intravenous fluid therapy in a patient with hypernatremia. Which finding indicates goal achievement? a. Urine output increases to 150 mL/hr. b. Systolic and diastolic blood pressure decreases. c. Serum sodium concentration returns to normal. d. Large amounts of emesis and diarrhea decrease.

ANS: C Hypernatremia is diagnosed by elevated serum sodium concentration. Blood pressure is not an accurate indicator of hypernatremia. Emesis and diarrhea will not stop because of intravenous therapy. Urine output is influenced by many factors, including extracellular fluid volume. A large dilute urine output can cause further hypernatremia.

The nurse suspects fluid overload in an infant receiving intravenous fluids. What clinical manifestation is suggestive of water intoxication? a. Oliguria b. Weight loss c. irritability and seizures d. Muscle weakness and cardiac dysrhythmias

ANS: C Irritability, somnolence, headache, vomiting, diarrhea, and generalized seizures are manifestations of water intoxication. Urinary output is increased as the child attempts to maintain fluid balance. Weight gain is usually associated with water intoxication. Muscle weakness and cardiac dysrhythmias are not associated with water intoxication.

A patient is to receive 1000 mL of 0.9% sodium chloride intravenously at a rate of 125 mL/hr. The nurse is using microdrip gravity drip tubing. Which rate will the nurse calculate for the minute flow rate (drops/min)? a. 12 drops/min b. 24 drops/min c. 125 drops/min d. 150 drops/min

ANS: C Microdrip tubing delivers 60 drops/mL. Calculation for a rate of 125 mL/hr using microdrip tubing: (125 mL/1 hr)(60 drops/1 mL)(1 hr/60 min) = 125 drop/min.

Several types of long-term central venous access devices are used. What is a benefit of using an implanted port (e.g., Port-a-Cath)? a. You do not need to pierce the skin for access. b. It is easy to use for self-administered infusions. c. The patient does not need to limit regular physical activity, including swimming. d. The catheter cannot dislodge from the port even if the child plays with the port site.

ANS: C No limitations on physical activity are needed. The child is able to participate in all regular physical activities, including bathing, showering, and swimming. The skin over the device is pierced with a Huber needle to access. Long-term central venous access devices are difficult to use for self-administration. The port is placed under the skin. If the child manipulates the device and plays with the actual port, the catheter can be dislodged.

While the nurse is taking a patient history, the nurse discovers the patient has a type of diabetes that results from a head injury and does not require insulin. Which dietary change should the nurse share with the patient? a. Reduce the quantity of carbohydrates ingested to lower blood sugar. b. Include a serving of dairy in each meal to elevate calcium levels. c. Drink plenty of fluids throughout the day to stay hydrated. d. Avoid food high in acid to avoid metabolic acidosis.

ANS: C The patient has diabetes insipidus, which places the patient at risk for dehydration and hypernatremia. Dehydration should be prevented by drinking plenty of fluids to replace the extra water excreted in the urine. Foods high in acid are not what causes metabolic acidosis. A reduction in carbohydrates to lower blood sugar will not help a patient with diabetes insipidus but it may help a patient with diabetes mellitus. Calcium-rich dairy products would be recommended for a hypocalcemic patient.

The nurse is assessing a patient and finds crackles in the lung bases and neck vein distention. Which action will the nurse take first? a. Offer calcium-rich foods. b. Administer diuretic. c. Raise head of bed. d. Increase fluids.

ANS: C The patient is in fluid overload. Raising the head of the bed to ease breathing is the first action. Offering calcium-rich foods is for hypocalcemia, not fluid overload. Administering a diuretic is the second action. Increasing fluids is contraindicated and would make the situation worse.

An infant is brought to the emergency department with the following clinical manifestations: poor skin turgor, weight loss, lethargy, tachycardia, and tachypnea. This is suggestive of which situation? a. Water excess b. Sodium excess c. Water depletion d. Potassium excess

ANS: C These clinical manifestations indicate water depletion or dehydration. Edema and weight gain occur with water excess or overhydration. Sodium or potassium excess would not cause these symptoms.

A nurse is caring for a cancer patient who presents with anorexia, blood pressure 100/60, and elevated white blood cell count. Which primary purpose for starting total parenteral nutrition (TPN) will the nurse add to the care plan? a. Stimulate the patient's appetite to eat. b. Deliver antibiotics to fight off infection. c. Replace fluid, electrolytes, and nutrients. d. Provide medication to raise blood pressure.

ANS: C Total parenteral nutrition is an intravenous solution composed of nutrients and electrolytes to replace the ones the patient is not eating or losing. TPN does not stimulate the appetite. TPN does not contain blood pressure medication or antibiotics.

The nurse observes edema in a patient who has venous congestion from right heart failure. Which type of pressure facilitated the formation of the patient's edema? a.Osmotic b.Oncotic c.Hydrostatic d.Concentration

ANS: C Venous congestion increases capillary hydrostatic pressure. Increased hydrostatic pressure causes edema by causing increased movement of fluid into the interstitial area. Osmotic and oncotic pressures involve the concentrations of solutes and can contribute to edema in other situations, such as inflammation or malnutrition. Concentration pressure is not a nursing term.

6. The patient with which diagnosis should have the highest priority for teaching regarding foods that are high in magnesium? a.Severe hemorrhage b.Diabetes insipidus c.Oliguric renal disease d.Adrenal insufficiency

ANS: C When renal excretion is decreased, magnesium intake must be decreased also, to prevent hypermagnesemia. The other conditions are not likely to require adjustment of magnesium intake.

During a blood transfusion, the patient begins to have chills and back pain. What is the nurse's priority action? a. Observe for other symptoms. b. Slow the infusion rate of the blood. c. Discontinue the infusion immediately, and notify the prescriber. d. Tell the patient that these symptoms are a normal reaction to the blood product.

ANS: C Because of the possibility of a transfusion reaction, the infusion should be discontinued immediately and the prescriber notified. The intravenous line should be kept patent with isotonic normal saline solution infusing at a slow rate, and the health care institution's protocol for transfusion reactions should always be followed. The other options are inappropriate actions.

During an infusion of albumin, the nurse monitors the patient closely for the development of which adverse effect? a. Hypernatremia b. Fluid volume deficit c. Fluid volume overload d. Transfusion reaction

ANS: C During the infusion of albumin, the development of fluid volume overload must be monitored by the nurse, especially in those at risk for heart failure. The other options are incorrect.

A patient is receiving an infusion of fresh frozen plasma. Based on this order, the nurse interprets that this patient has which condition? a. Hypovolemic shock b. Anemia c. Coagulation disorder d. Previous transfusion reaction

ANS: C Fresh frozen plasma is used as an adjunct to massive blood transfusion in the treatment of patients with underlying coagulation disorders. The other options are not indications for fresh frozen plasma.

After teaching a client to increase dietary potassium intake, a nurse assesses the clients understanding. Which dietary meal selection indicates the client correctly understands the teaching? a. Toasted English muffin with butter and blueberry jam, and tea with sugar b. Two scrambled eggs, a slice of white toast, and a half cup of strawberries c. Sausage, one slice of whole wheat toast, half cup of raisins, and a glass of milk d. Bowl of oatmeal with brown sugar, a half cup of sliced peaches, and coffee

ANS: C Meat, dairy products, and dried fruit have high concentrations of potassium. Eggs, breads, cereals, sugar, and some fruits (berries, peaches) are low in potassium. The menu selection of sausage, toast, raisins, and milk has the greatest number of items with higher potassium content.

A client at risk for developing hyperkalemia states, I love fruit and usually eat it every day, but now I cant because of my high potassium level. How should the nurse respond? a. Potatoes and avocados can be substituted for fruit. b. If you cook the fruit, the amount of potassium will be lower. c. Berries, cherries, apples, and peaches are low in potassium. d. You are correct. Fruit is very high in potassium.

ANS: C Not all fruit is potassium rich. Fruits that are relatively low in potassium and can be included in the diet include apples, apricots, berries, cherries, grapefruit, peaches, and pineapples. Fruits high in potassium include bananas, kiwi, cantaloupe, oranges, and dried fruit. Cooking fruit does not alter its potassium content.

After administering 40 mEq of potassium chloride, a nurse evaluates the clients response. Which manifestations indicate that treatment is improving the clients hypokalemia? (Select all that apply.) a. Respiratory rate of 8 breaths/min b. Absent deep tendon reflexes c. Strong productive cough d. Active bowel sounds e. U waves present on the electrocardiogram (ECG)

ANS: C, D A strong, productive cough indicates an increase in muscle strength and improved potassium imbalance. Active bowel sounds also indicate treatment is working. A respiratory rate of 8 breaths/min, absent deep tendon reflexes, and U waves present on the ECG are all manifestations of hypokalemia and do not demonstrate that treatment is working.

A nurse cares for a client who has a serum potassium of 7.5 mEq/L and is exhibiting cardiovascular changes. Which prescription should the nurse implement first? a. Prepare to administer sodium polystyrene sulfate (Kayexalate) 15 g by mouth. b. Provide a heart healthy, low-potassium diet. c. Prepare to administer dextrose 20% and 10 units of regular insulin IV push. d. Prepare the client for hemodialysis treatment.

ANS: CA client with a high serum potassium level and cardiac changes should be treated immediately to reduce the extracellular potassium level. Potassium movement into the cells is enhanced by insulin by increasing the activity of sodium-potassium pumps. Insulin will decrease both serum potassium and glucose levels and therefore should be administered with dextrose to prevent hypoglycemia. Kayexalate may be ordered, but this therapy may take hours to reduce potassium levels. Dialysis may also be needed, but this treatment will take much longer to implement and is not the first prescription the nurse should implement. Decreasing potassium intake may help prevent hyperkalemia in the future but will not decrease the clients current potassium level.

A nurse teaches a client who is at risk for mild hypernatremia. Which statement should the nurse include in this clients teaching?a. Weigh yourself every morning and every night. b. Check your radial pulse twice a day. c. Read food labels to determine sodium content. d. Bake or grill the meat rather than frying it.

ANS: CMost prepackaged foods have a high sodium content. Teaching clients how to read labels and calculate the sodium content of food can help them adhere to prescribed sodium restrictions and can prevent hypernatremia. Daily self-weighing and pulse checking are methods of identifying manifestations of hypernatremia, but they do not prevent it. The addition of substances during cooking, not the method of cooking, increases the sodium content of a meal.

A nurse teaches clients at a community center about risks for dehydration. Which client is at greatest risk for dehydration? a. A 36-year-old who is prescribed long-term steroid therapy b. A 55-year-old receiving hypertonic intravenous fluids c. A 76-year-old who is cognitively impaired d. An 83-year-old with congestive heart failure

ANS: COlder adults, because they have less total body water than younger adults, are at greater risk for development of dehydration. Anyone who is cognitively impaired and cannot obtain fluids independently or cannot make his or her need for fluids known is at high risk for dehydration.

A patient who is severely anemic also has acute heart failure with severe edema due to fluid overload. The prescriber wants to raise the patient's hemoglobin and hematocrit levels. The nurse anticipates that the patient will receive which blood product? a. Fresh frozen plasma b. Albumin c. Packed red blood cells (PRBCs) d. Whole blood

ANS: CPRBCs are given to increase the oxygen-carrying capacity in a patient with anemia, in a patient with substantial hemoglobin deficits, and in a patient who has lost up to 25% of total blood volume. A patient with a coagulation disorder or a clotting-factor deficiency would receive fresh frozen plasma; a patient who has lost a massive amount of blood would receive whole blood.

The presence of which pair of factors is a good predictor of a fluid deficit of at least 5% in an infant? a. Weight loss and decreased heart rate b. Capillary refill of less than 2 seconds and no tears Ic. ncreased skin elasticity and sunken anterior fontanel d. Dry mucous membranes and generally ill appearance

ANS: D A good predictor of a fluid deficit of at least 5% is any two four factors: capillary refill of more than 2 seconds, absent tears, dry mucous membranes, and ill general appearance. Weight loss is associated with fluid deficit, but the degree needs to be quantified. Heart rate is usually elevated. Skin elasticity is decreased, not increased. The anterior fontanel is depressed.

A chemotherapy patient has gained 5 pounds in 2 days. Which assessment question by the nurse is most appropriate? a. "Are you following any weight loss program?" b. "How many calories a day do you consume?" c. "Do you have dry mouth or feel thirsty?" d. "How many times a day do you urinate?"

ANS: D A rapid gain in weight usually indicates extracellular volume (ECV) excess if the person began with normal ECV. Asking the patient about urination habits will help determine whether the body is trying to excrete the excess fluid or if renal dysfunction is contributing to ECV excess. This is too rapid a weight gain to be dietary; it is fluid retention. Asking about following a weight loss program will not help determine the cause of the problem. Caloric intake does not account for rapid weight changes. Dry mouth and thirst accompany ECV deficit, which would be associated with rapid weight loss.

A nurse is assisting the health care provider in inserting a central line. Which action indicates the nurse is following the recommended bundle protocol to reduce central line-associated bloodstream infections (CLABSI)? a. Preps skin with povidone-iodine solution. b. Suggests the femoral vein for insertion site. c. Applies double gloving without hand hygiene. d. Uses chlorhexidine skin antisepsis prior to insertion.

ANS: D A recommended bundle at insertion of a central line is hand hygiene prior to catheter insertion; use of maximum sterile barrier precautions upon insertion; chlorhexidine skin antisepsis prior to insertion and during dressing changes; avoidance of the femoral vein for central venous access for adults; and daily evaluation of line necessity, with prompt removal of non-essential lines. Povidone-iodine is not recommended.

What substance is released from the posterior pituitary gland and promotes water retention in the renal system? A. Renin B. Aldosterone C.Angiotensin D. Antidiuretic hormone (ADH)

ANS: D ADH is released in response to increased osmolality and decreased volume of intravascular fluid; it promotes water retention in the renal system by increasing the permeability of renal tubules to water. Renin release is stimulated by diminished blood flow to the kidneys. Aldosterone is secreted by the adrenal cortex. It enhances sodium reabsorption in renal tubules, promoting osmotic reabsorption of water. Renin reacts with a plasma globulin to generate angiotensin, which is a powerful vasoconstrictor. Angiotensin also stimulates the release of aldosterone.

The nurse is caring for a patient with hyperkalemia. Which body system assessment is the priority? a. Gastrointestinal b. Neurological c. Respiratory d. Cardiac

ANS: D Cardiac is the priority. Hyperkalemia places the patient at risk for potentially serious dysrhythmias and cardiac arrest. Potassium balance is necessary for cardiac function. Respiratory is the priority with hypokalemia. Monitoring of gastrointestinal and neurological systems would be indicated for other electrolyte imbalances.

Clinical manifestations of sodium excess (hypernatremia) include which signs or symptoms? a. Hyperreflexia b. Abdominal cramps c. Cardiac dysrhythmias d. Dry, sticky mucous membranes

ANS: D Dry, sticky mucous membranes are associated with hypernatremia. Hyperreflexia is associated with hyperkalemia. Abdominal cramps, weakness, dizziness, nausea, and apprehension are associated hyponatremia. Cardiac dysrhythmias are associated with hypokalemia.

What type of diarrhea is associated with an inflammation of the mucosa and submucosa in the ileum and colon caused by infectious agents? a. Osmotic b. Secretory c. Cytotoxic d. Dysenteric

ANS: D Dysenteric diarrhea is associated with an inflammation of the mucosa and submucosa in the ileum and colon caused by infectious agents such as Campylobacter, Salmonella, or Shigella organisms. Edema, mucosal bleeding, and leukocyte infiltration occur. Osmotic diarrhea occurs when the intestine cannot absorb nutrients or electrolytes. It is commonly seen in malabsorption syndromes such as lactose intolerance. Secretory diarrhea is usually a result of bacterial enterotoxins that stimulate fluid and electrolyte secretion from the mucosal crypt cells, the principal secretory cells of the small intestine. Cytotoxic diarrhea is characterized by the viral destruction of the villi of the small intestine. This results in a smaller intestinal surface area, with a decreased capacity for fluid and electrolyte absorption.

The patient's laboratory report today indicates severe hypokalemia, and the nurse has notified the physician. Nursing assessment indicates that heart rhythm is regular. What is the most important nursing intervention for this patient now? a.Raise bed side rails due to potential decreased level of consciousness and confusion. b.Examine sacral area and patient's heels for skin breakdown due to potential edema. c.Establish seizure precautions due to potential muscle twitching, cramps, and seizures. d.Institute fall precautions due to potential postural hypotension and weak leg muscles.

ANS: D Hypokalemia can cause postural hypotension and bilateral muscle weakness, especially in the lower extremities. Both of these increase the risk of falls. Hypokalemia does not cause edema, decreased level of consciousness, or seizures.

What clinical manifestation(s) is associated with calcium depletion (hypocalcemia)? a. nausea, vomiting b. weakness, fatigue c. muscle hypotonicity d. neuromuscular irritability

ANS: D Neuromuscular irritability is a clinical manifestation of hypocalcemia. Nausea and vomiting occur with hypercalcemia and hypernatremia. Weakness, fatigue, and muscle hypotonicity are clinical manifestations of hypercalcemia.

A nurse is caring for a patient who is receiving peripheral intravenous (IV) therapy. When the nurse is flushing the patient's peripheral IV, the patient reports pain. Upon assessment, the nurse notices a red streak that is warm to the touch. What is the nurse's initial action? a. Record a phlebitis grade of 4. b. Assign an infiltration grade. c. Apply moist compress. d. Discontinue the IV.

ANS: D The IV site has phlebitis. The nurse should discontinue the IV. The phlebitis score is 3. The site has phlebitis, not infiltration. A moist compress may be needed after the IV is discontinued.

What physiologic state(s) produces the clinical manifestations of nervous system stimulation and excitement, such as over-excitability, nervousness, and tetany? a. Metabolic acidosis b. Respiratory alkalosis c. Metabolic and respiratory acidosis d. Metabolic and respiratory alkalosis

ANS: D The major symptoms and signs of alkalosis include nervous system stimulation and excitement, including overexcitability, nervousness, tingling sensations, and tetany that may progress to seizures. Acidosis (both metabolic and respiratory) has clinical signs of depression of the central nervous system, such as lethargy, diminished mental capacity, delirium, stupor, and coma. Respiratory alkalosis has the same symptoms and signs as metabolic alkalosis.

A nurse is preparing to start peripheral intravenous (IV) therapy. In which order will the nurse perform the steps starting with the first one? 1. Clean site. 2. Select vein. 3. Apply tourniquet. 4. Release tourniquet. 5. Reapply tourniquet. 6. Advance and secure. 7. Insert vascular access device. a. 1, 3, 2, 7, 5, 4, 6 b. 1, 3, 2, 5, 7, 6, 4 c. 3, 2, 1, 5, 7, 6, 4 d. 3, 2, 4, 1, 5, 7, 6

ANS: D The steps for inserting an intravenous catheter are as follows: Apply tourniquet; select vein; release tourniquet; clean site; reapply tourniquet; insert vascular access device; and advance and secure.

Which assessment finding will the nurse expect for a patient with the following laboratory values: sodium 145 mEq/L, potassium 4.5 mEq/L, calcium 4.5 mg/dL? a. Weak quadriceps muscles b. Decreased deep tendon reflexes c. Light-headedness when standing up d. Tingling of extremities with possible tetany

ANS: D This patient has hypocalcemia because the normal calcium range is 8.4 to 10.5 mg/dL. Hypocalcemia causes muscle tetany, positive Chvostek's sign, and tingling of the extremities. Sodium and potassium values are within their normal ranges: sodium 135 to 145 mEq/L; potassium 3.5 to 5.0 mEq/L. Light-headedness when standing up is a manifestation of ECV deficit or sometimes hypokalemia. Weak quadriceps muscles are associated with potassium imbalances. Decreased deep tendon reflexes are related to hypercalcemia or hypermagnesemia

The patient is receiving tube feedings due to a jaw surgery. What change in assessment findings should prompt the nurse to request an order for serum sodium concentration? a. Development of ankle or sacral edema b. Increased skin tenting and dry mouth c. Postural hypotension and tachycardia d. Decreased level of consciousness

ANS: D Tube feedings pose a risk for hypernatremia unless adequate water is administered between tube feedings. Hypernatremia causes the level of consciousness to decrease. The serum sodium concentration is a laboratory measure for osmolality imbalances, not ECV imbalances. Edema is a sign of ECV excess, not hypernatremia. Skin tenting, dry mouth, postural hypotension, and tachycardia all can be signs of ECV deficit.

After teaching a client who is prescribed a restricted sodium diet, a nurse assesses the clients understanding. Which food choice for lunch indicates the client correctly understood the teaching? a. Slices of smoked ham with potato salad b. Bowl of tomato soup with a grilled cheese sandwich c. Salami and cheese on whole wheat crackers d. Grilled chicken breast with glazed carrots

ANS: D Clients on restricted sodium diets generally should avoid processed, smoked, and pickled foods and those with sauces and other condiments. Foods lowest in sodium include fish, poultry, and fresh produce. The ham, tomato soup, salami, and crackers are often high in sodium.

A patient is in an urgent care center and is receiving treatment for mild hyponatremia after spending several hours doing gardening work in the heat of the day. The nurse expects that which drug therapy will be used to treat this condition? a. Oral supplementation of fluids b. Intravenous bolus of lactated Ringer's solution c. Normal saline infusion, administered slowly d. Oral administration of sodium chloride tablets

ANS: D Mild hyponatremia is usually treated by oral administration of sodium chloride tablets. Pronounced sodium depletion is treated by intravenous normal saline or lactated Ringer's solution.

When monitoring a patient for signs of hypokalemia, the nurse looks for what early sign? a.Seizures b. Cardiac dysrhythmias c. Diarrhea d. Muscle weakness

ANS: D Muscle weakness is an early symptom of hypokalemia, as are hypotension, lethargy, mental confusion, and nausea. Cardiac dysrhythmias are a late symptom of hypokalemia. The other options are incorrect.

A nurse is evaluating a client who is being treated for dehydration. Which assessment result should the nurse correlate with a therapeutic response to the treatment plan? a. Increased respiratory rate from 12 breaths/min to 22 breaths/min b. Decreased skin turgor on the clients posterior hand and forehead c. Increased urine specific gravity from 1.012 to 1.030 g/mL d. Decreased orthostatic light-headedness and dizziness

ANS: D The focus of management for clients with dehydration is to increase fluid volumes to normal. When fluid volumes return to normal, clients should perfuse the brain more effectively, therefore improving confusion and decreasing orthostatic light-headedness or dizziness. Increased respiratory rate, decreased skin turgor, and increased specific gravity are all manifestations of dehydration.

The nurse is working with a graduate nurse to prepare an intravenous dose of potassium. Which statement by the graduate nurse reflects a need for further teaching? a. "We will need to monitor this infusion closely." b. "The infusion rate should not go over 10 mEq/hr." c. "The intravenous potassium will be diluted before we give it." d. "The intravenous potassium dose will be given undiluted."

ANS: D When giving intravenous potassium, the medication must always be given in a diluted form and administered slowly. Intravenous bolus or undiluted forms may cause cardiac arrest. Intravenous rates are not to exceed 10 mEq/hr unless the patient is on a cardiac monitor. Oral forms should be mixed with juice or water or taken according to instructions.

A nurse is caring for an older adult client who is admitted with moderate dehydration. Which intervention should the nurse implement to prevent injury while in the hospital? a. Ask family members to speak quietly to keep the client calm. b. Assess urine color, amount, and specific gravity each day. c. Encourage the client to drink at least 1 liter of fluids each shift. d. Dangle the client on the bedside before ambulating.

ANS: DAn older adult with moderate dehydration may experience orthostatic hypotension. The client should dangle on the bedside before ambulating. Although dehydration in an older adult may cause confusion, speaking quietly will not help the client remain calm or decrease confusion. Assessing the clients urine may assist with the diagnosis of dehydration but would not prevent injury. Clients are encouraged to drink fluids, but 1 liter of fluid each shift for an older adult may cause respiratory distress and symptoms of fluid overload, especially if the client has heart failure or renal insufficiency.

A nurse is discontinuing a patient's peripheral IV access. Which actions should the nurse take? (Select all that apply.) a. Wear sterile gloves and a mask. b. Stop the infusion before removing the IV catheter. c. Use scissors to remove the IV site dressing and tape. d. Apply firm pressure with sterile gauze during removal. e. Keep the catheter parallel to the skin while removing it. f. Apply pressure to the site for 2 to 3 minutes after removal.

The nurse should stop the infusion before removing the IV catheter, so the fluid does not drip on the patient's skin; keep the catheter parallel to the skin while removing it to reduce trauma to the vein; and apply pressure to the site for 2 to 3 minutes after removal to decrease bleeding from the site. Scissors should not be used because they may accidentally cut the catheter or tubing or may injure the patient. During removal of the IV catheter, light pressure, not firm pressure, is indicated to prevent trauma. Clean gloves are used for discontinuing a peripheral IV access because gloved hands will handle the external dressing, tubing, and tape, which are not sterile.