Exam 1:Homeostasis, genetics, fluid and electrolyte disturbance, anemia, ABG, immunity NCLEX questions

The nurse is preparing to administer the discharge teaching instructions to a client with heart failure. Which measure will be included that the client will need to monitor on their own related to their recent hospitalization: _________________ . a. daily weight b. weekly electrolyte level c. daily fasting blood sugar d. daily urine dipstick for protein

a. daily weight Daily weights are one of the most important determinations of fluid balance. Weighing at home at the same time with the same amount of clothing on will track overall fluid changes as they occur. Acute weight gain or loss represents fluid gain or loss. The other measures would not be the responsibility of the client. Blood sugar measurement does not directly apply in this situation. .

Which question by a client hospitalized for a fluid volume deficit would require the nurse to investigate in more detail the probable cause of the dehydration? a. "Do I have to drink everything that is sent on my meal trays? I do not drink that much at home." b. "I have not had a bowel movement for 2 days. Can I get a laxative?" c. "I have tried to limit my sodium intake at home, but I am not very successful. Will I have to continue with this?" d. "I try to use the bathroom many times a day so that I will not have to get up through the night. Do you think this caused me to lose so much water?"

b. "I have not had a bowel movement for 2 days. Can I get a laxative?" Chronic abuse of laxatives and/or enemas may lead to fluid loss in a client. Elderly clients are most at risk for this as their overall fluid composition to total body weight has decreased. The frequent or dependent use of laxatives or enemas may not be readily reported on admission.

A client is brought to the emergency room following a motor vehicle accident. There is a moderate amount of blood loss. The physician has ordered 1000 ml of intravenous fluids to infuse over 4 hours. Which type of solution would be appropriate? Select all that apply. a. 5% dextrose with 0.45% sodium chloride b. 0.9% sodium chloride c. 5% dextrose in water d. 0.45% sodium chloride

b. 0.9% sodium chloride d. 0.45% sodium chloride Isotonic solutions (similar to normal body fluid) are used to expand plasma volume in hypotensive clients or to replace abnormal losses. Fluid loss due to injury will usually cause isotonic fluid loss. Expanding plasma volume will increase the overall circulating body volume. 5% dextrose with 0.45% sodium chloride is a hypotonic solution and is used when electrolyte replacement is also needed.

Which of the following hospitalized clients would the nurse be most concerned is at risk for developing an imbalance related to water loss? Select all that apply. a. A 50-year old undernourished female b. A 75-year old female of average body weight c. A 60-year old male of average body weight d. A 45-year old obese male

b. A 75-year old female of average body weight d. A 45-year old obese male On average, females have a lower proportion of water to total body weight composition. The obese client has a lower proportion of water to total body weight. After age 65, total body water may decrease 45-50% of the total body weight.

While orienting a new nurse to work in the surgical intensive care unit, the charge nurse quizzes the new nurse as to which of the following postoperative clients would be at highest risk for problems related to excess fluids? Select all that apply. a. Client with diabetes insipidus b. Client with heart failure c. Client with systemic lupus erythematous d. Client with liver cirrhosis

b. Client with heart failure d. Client with liver cirrhosis With fluid volume excess, water and sodium are gained together. This creates a total water increase in the body. A client with a heart that is not able to pump this excess fluid and a liver that is not functioning appropriately will have potential problems. Clients with diabetes insipidus and systemic lupus erythematous are not considered to be at general risk for fluid volume excess. .

A patient is admitted for hypovolemia associated with multiple draining wounds. Which assessment would be the most accurate way for the nurse to evaluate fluid balance? a. Skin turgor b. Daily weight c. Presence of edema d. Hourly urine output

b. Daily weight

When caring for a pt diagnosed with hypocalcemia, which of the following should the nurse additionally assess in the pt? 1. other electrolyte disturbances 2. hypertension 3. visual disturbances 4. drug toxicity

Answer: 1 Rationale 1: The pt diagnosed with hypocalcemia may also have high phosphorus or decreased magnesium levels. Rationale 2: The pt with hypocalcemia may exhibit hypotension, & not hypertension. Rationale 3: Visual disturbances do not occur with hypocalcemia. Rationale 4: Hypercalcemia is more commonly caused by drug toxicities.

The pt has a serum phosphate level of 4.7 mg/dL. Which interdisciplinary treatments would the nurse expect for this pt? Select all that apply. 1. IV normal saline 2. calcium containing antacids 3. IV potassium phosphate 4. encouraging milk intake 5. increasing vitamin D intake

Answer: 1,2 Rationale: Serum phosphate level of 4.7 mg/dL indicates hyperphosphatemia. IV normal saline promotes renal excretion of phosphate.

The pt is receiving intravenous potassium (KCL). Which nursing actions are required? Select all that apply. 1. Administer the dose IV push over 3 minutes. 2. Monitor the injection site for redness. 3. Add the ordered dose to the IV hanging. 4. Use an infusion controller for the IV. 5. Monitor fluid intake & output.

Answer: 2,4,5

An elderly pt does not complain of thirst. What should the nurse do to assess that this pt is not dehydrated? 1. Ask the physician for an order to begin intravenous fluid replacement. 2. Ask the physician to order a chest x-ray. 3. Assess the urine for osmolality. 4. Ask the physician for an order for a brain scan.

Answer: 3 Rationale 1: It is inappropriate to seek an IV at this stage. Rationale 2: There is no indication the pt is experiencing pulmonary complications thus a cheat x-ray is not indicated. Rationale 3: The thirst mechanism declines with aging, which makes older adults more vulnerable to dehydration & hyperosmolality. The nurse should check the pt's urine for osmolality as a 1st step in determining hydration status before other detailed & invasive testing is done. Rationale 4: There is no data to support the need for a brain scan.

An elderly patient was hydrated with lactated Ringer's solution in the emergency room for the last hour. During the most recent evaluation of the patient by the nurse, a finding of a rapid bounding pulse and shortness of breath were noted. Reporting this episode to the physician, the nurse suspects that the patient now shows signs of: a. Hypovolemia, and needs more fluids b. Hypervolemia, and needs the fluids adjusted c. An acid-base disturbance d. Needing no adjustment in fluid administration

b. Hypervolemia, and needs the fluids adjusted Rationale: Isotonic solutions has the same osmolality as body fluids. Isotonic solutions, such as Normal Saline and Ringer's Lactate, initially remain in the vascular compartment, expanding vascular volume. Isotonic imbalances occur when water and electrolytes are lost or gained in equal proportions, and serum osmolality remains constant.

Anemia or insufficient hemoglobin content is common in older persons. The client's body compensates for the deficiency by: a. Decreasing the respiratory and heart rates. b. Increasing the heart and respiratory rates. c. Shunting blood away from vital organs and skin. d. Decreasing blood viscosity in order to supply oxygen to hypoxic tissues.

b. Increasing the heart and respiratory rates. Rationale: All anemias result in a loss of oxygen-carrying capacity of the blood, and produce generalized hypoxia. The body tries to compensate by raising the heart and respiratory rates, shunting blood to vital organs away from the skin, and increasing blood viscosity in order to supply oxygen to hypoxic tissues.

The ambulance arrives with a client who presents with Kussmaul's respirations. The client has a history of diabetes. The nurse does a fingerstick blood sugar test immediately. The nurse is anticipating results that will lead to the diagnosis of which acid-base imbalance: a. Respiratory acidosis. b. Metabolic acidosis. c. Respiratory alkalosis. d. Metabolic alkalosis.

b. Metabolic acidosis. Kussmaul's respirations are deep and rapid respirations that are a compensatory mechanism by the respiratory system to return the blood pH to normal by eliminating carbon dioxide. This occurs when the body is in a metabolic acidotic state. The nurse expects the blood sugar to be very high. When the blood sugar of a diabetic client is very high, diabetic ketoacidosis may result. This is a type of metabolic acidosis. Clients with a history of diabetes are not prone to respiratory imbalances.

A patient has the following ABG results: pH 7.32, PaO2 88 mm Hg, PaCO2 37 mm Hg, and HCO3 16 mEq/L. The nurse interprets these results as a. respiratory acidosis. b. respiratory alkalosis. c. metabolic acidosis. d. metabolic alkalosis.

C Rationale: The pH and HCO3 indicate that the patient has a metabolic acidosis. The ABGs are inconsistent with the other responses.

A client is admitted to the hospital for dehydration related to a gastrointestinal viral illness. The client is also on an alcohol withdrawal protocol. They complain of their lips and mouth feeling numb and tingling. When the nurse observes the lab results from the morning, which result would provide an insight into this client's complaint: a. low sodium level. b. low calcium level. c. high magnesium level. d. high potassium level.

b. low calcium level. Clients with a history of alcoholism are prone to hypocalcemia. The numbness and tingling of the lips and mouth are symptomatic of this and are referred to as "tetany."

When caring for a client with a diagnosis of thrombocytopenia, the nurse should plan to: a. Discourage the use of stool softeners. b. Assess temperature readings every six hours. c. Avoid invasive procedures. d. Encourage the use of a hard, brittle toothbrush.

c. Avoid invasive procedures. Rationale: Thrombocytopenia is characterized by an increased number of circulating platelets in the blood. Older persons with thrombocytopenia are at significantly increased risk of thrombosis, and careful monitoring of platelet levels and symptoms is indicated.

An elderly client is admitted to the hospital Emergency Department (ED) with complaints of headache, visual disturbances, and burning pain, and erythema of the hands and feet. To accurately diagnose thrombocytopenia, the physician most likely will order: a. Peripheral blood smear. b. Allogenic bone marrow transplant. c. Bone marrow aspiration. d. Splenectomy.

c. Bone marrow aspiration. Rationale: Thrombocytopenia is characterized by an increased number of circulating platelets in the blood. Accurate diagnosis requires bone marrow aspiration. Allogenic bone marrow transplantation is prescribed for younger persons with myelofibrosis. A splenectomy may be prescribed for persons with myelofibrosis.

Because older persons can have severe anemia for a long period of time without detection, when diagnosed, quick reversal is warranted. Which of the following orders most likely would be prescribed at this time? a. Platelet transfusion and osmotic diuretic b. Ferrous sulfate 325 mg orally three times a day c. Packed red blood cells followed by oral furosemide (Lasix) d. Erythropoietin (Procrit) injection twice per week

c. Packed red blood cells followed by oral furosemide (Lasix) Rationale: Older persons might have heart problem that are compounded by severe anemia. The physician can prescribe blood transfusions to reverse the severity of the anemia, and a diuretic such as furosemide (Lasix) orally between units to prevent fluid overload and the development of congestive heart failure (CHF).

A patient who is taking a potassium-wasting diuretic for treatment of hypertension complains of generalized weakness. It is most appropriate for the nurse to take which action? a. Assess for facial muscle spasms. b. Ask the patient about loose stools. c. Suggest that the patient avoid orange juice with meals. d. Ask the health care provider to order a basic metabolic panel.

d. Ask the health care provider to order a basic metabolic panel.

Parents of a newborn are confused when their child is diagnosed with a genetic disorder because neither of them has a defect. Testing is done and it is determined that both parents are carriers of the disorder even though they are asymptomatic. Understanding the principles of the Mendelian Pattern of Inheritance what condition is the likely reason for this genetic disorder? a. Recessive versus dominant condition b. Autosomal dominant conditions c. X-linked recessive condition d. Autosomal recessive condition

d. Autosomal recessive condition Rationale: Knowledge of inheritance allows the nurse to not only offer and reinforce genetic information to clients and their families but also to assist them in managing their care and in making reproductive decisions. The only answer choice here that can be correct is autosomal recessive condition. In this condition the parents would be known to be carriers of the condition and they do not usually exhibit any signs or symptoms of the condition.

During an assessment of a patient experiencing acute hemorrhage and anemia, the healthcare provider would most likely expect to find: a. Hypotension b. Jaundice c. Nausea d. Tachycardia

d. Tachycardia

The nurse is evaluating the medication list of a newly-admitted client with hypokalemia. The client has been experiencing dysrhythmias and is on a cardiac monitor. Which medication from the list would alert the nurse to pursue a discussion with the physician? a. an oral antidiabetic agent b. a cardiac rhythm drug c. an over the counter antacid d. a diuretic

d. a diuretic Excess potassium loss through the kidneys is often secondary to drugs such as potassium-wasting diuretics. Hypokalemia may lead to cardiac dysrhythmias. Potassium-wasting diuretic therapy may require supplemental oral potassium.

While assisting a new client from a wheelchair to a bed in the emergency room, the client complains of being dizzy. Which intervention by the nurse would be the best in this situation: ___________________ . a. assess peripheral pulses b. take an apical pulse c. assess for diuretic use d. assess blood pressure

d. assess blood pressure Postural or orthostatic hypotension is a sign of hypovolemia. A drop of more than 15 mmHg in systolic blood pressure when changing positions (lying to sitting, sitting to standing) often indicates fluid depletion. Assessing for diuretic use may yield information that contributes to the problem, but directly assessing the blood pressure is an immediate response to an exhibited symptom.

The healthcare provider is planning care for four patients. Which patient is most in need of interventions aimed at preventing anemia? The patient: a. who is a vegetarian. b. with a Jackson-Pratt drain. c. who has been NPO for 3 days. d. with renal failure on hemodialysis.

d. with renal failure on hemodialysis.

A patient with advanced lung cancer is admitted to the ED with urinary retention caused by renal calculi. Which of these laboratory values will require the most immediate action by the nurse? a. Arterial oxygen saturation 91% b. Serum potassium is 5.1 mEq/L c. Arterial blood pH is 7.32 d. Serum calcium is 18 mEq/L

D Rationale: The serum calcium is well above the normal level (4.5-5.5 mEq/L) and puts the patient at risk for cardiac dysrhythmias. The nurse should initiate cardiac monitoring and notify the health care provider. The potassium, oxygen saturation, and pH are also abnormal, and the nurse should notify the health care provider about these values as well, but they do not indicate the need for immediate intervention.

A child is admitted to the hospital with a diagnosis of aplastic anemia. When planning care for this patient, which of the following interventions is appropriate? Select all that apply. a. Administering chelating agents, as ordered. b. Administering hematopoietic growth factors, as ordered. c. Encouraging intake of foods high in iron. d. Coordinating pet therapy for the child. e. Promoting a balance of rest and activity.

a. Administering chelating agents, as ordered. b. Administering hematopoietic growth factors, as ordered. e. Promoting a balance of rest and activity.

A nurse is caring for a client with severe diarrhea. The nurse monitors the client closely, understanding that this client is at risk for developing which acid-base disorder? 1. Metabolic acidosis 2. Metabolic alkalosis 3. Respiratory acidosis 4. Respiratory alkalosis

1

A nurse is caring for a client with a nasogastric tube that is attached to low suction. The nurse monitors the client closely for which acid-base disorder that is most likely to occur in this situation? 1. Metabolic acidosis 2. Metabolic alkalosis 3. Respiratory acidosis 4. Respiratory alkalosis

2

A nurse is caring for a client with respiratory insufficiency. The ABG results indicate a pH of 7.50 and a PCO2 of 30 mm Hg, and the nurse is told that the client is experiencing respiratory alkalosis. Which of the following additional laboratory values would the nurse expect to note? 1. A sodium level of 145 mEq/L 2. A potassium level of 3.2 mEq/L 3. A magnesium level of 2.4 mg/dL 4. A phosphorus level of 4.0 mg/dL 2

2

A nurse is caring for a client with a diagnosis of COPD. The nurse monitors the client for which acid-base imbalance that most likely occurs in clients with this condition? 1. Metabolic acidosis 2.Metabolic alkalosis 3. Respiratory acidosis 4. Respiratory alkalosis

3

The RN reviews the results of the ABG with the LPN and tells the LPN that the client is experiencing respiratory acidosis. The LPN would expect to note which of the following on the laboratory result form? 1. pH 7.50, PCO2 52 mm Hg 2. pH 7.35, PCO2 40 mm Hg 3. pH 7.25, PCO2 50 mm Hg 4. pH 7.50, PCO2 30 mm Hg

3

A client has the following lab values: a pH of 7.55, an HCO3- of 22 mm Hg, and a PCO2 of 30 mm Hg. What should the nurse do? 1. Perform Allen's test 2. Prepare the client for dialysis 3. Administer insulin as ordered 4. Encourage the client to slow down breathing

4

The nurse is told that the blood gas results indicate a pH of 7.55 and a PCO2 of 30 mm Hg. The nurse determines that these results indicate: 1. Metabolic acidosis 2. Metabolic alkalosis 3. Respiratory acidosis 4. Respiratory alkalosis

4

A newly admitted patient is diagnosed with hyponatremia. When making room assignments, the charge nurse should take which action? a. Assign the patient to a room near the nurse's station. b. Place the patient in a room nearest to the water fountain. c. Place the patient on telemetry to monitor for peaked T waves. d. Assign the patient to a semi-private room and place an order for a low-salt diet.

A

A patient has a serum calcium level of 7.0 mEq/L. Which assessment finding is most important for the nurse to report to the health care provider? a. The patient is experiencing laryngeal stridor. b. The patient complains of generalized fatigue. c. The patient's bowels have not moved for 4 days. d. The patient has numbness and tingling of the lips.

A

A patient receives 3% NaCl solution for correction of hyponatremia. Which assessment is most important for the nurse to monitor for while the patient is receiving this infusion? a. Lung sounds b. Urinary output c. Peripheral pulses d. Peripheral edema

A

A patient who is lethargic and exhibits deep, rapid respirations has the following arterial blood gas (ABG) results: pH 7.32, PaO2 88 mm Hg, PaCO2 37 mm Hg, and HCO3 16 mEq/L. How should the nurse interpret these results? a. Metabolic acidosis b. Metabolic alkalosis c. Respiratory acidosis d. Respiratory alkalosis

A

A patient with renal failure has been taking aluminum hydroxide/magnesium hydroxide suspension (Maalox) at home for indigestion. The patient arrives for outpatient hemodialysis and is unresponsive to questions and has decreased deep tendon reflexes. Which action should the dialysis nurse take first? a. Notify the patient's health care provider. b. Obtain an order to draw a potassium level. c. Review the magnesium level on the patient's chart. d. Teach the patient about the risk of magnesium-containing antacids

A

A postoperative patient who had surgery for a perforated gastric ulcer has been receiving nasogastric suction for 3 days. The patient now has a serum sodium level of 127 mEq/L (127 mmol/L). Which prescribed therapy should the nurse question? a. Infuse 5% dextrose in water at 125 mL/hr. b. Administer IV morphine sulfate 4 mg every 2 hours PRN. c. Give IV metoclopramide (Reglan) 10 mg every 6 hours PRN for nausea. d. Administer 3% saline if serum sodium decreases to less than 128 mEq/L.

A

The nurse is caring for a patient with a massive burn injury and possible hypovolemia. Which assessment data will be of most concern to the nurse? a. Blood pressure is 90/40 mm Hg. b. Urine output is 30 mL over the last hour. c. Oral fluid intake is 100 mL for the last 8 hours. d. There is prolonged skin tenting over the sternum.

A

When assessing a patient with increased extracellular fluid (ECF) osmolality, the priority assessment for the nurse to obtain is a. mental status. b. skin turgor. c. capillary refill. d. heart sounds.

A Rationale: Changes in ECF osmolality lead to swelling or shrinking of cells in the central nervous system, initially causing confusion, which may progress to coma or seizures. Although skin turgor, capillary refill, and heart sounds may also be affected by ECF osmolality changes and resultant fluid shifts, these are signs that occur later and do not have as immediate an impact on patient outcomes.

A patient is taking hydrochlorothiazide, a potassium-wasting diuretic, for treatment of hypertension. The nurse will teach the patient to report symptoms of adverse effects such as a. generalized weakness. b. facial muscle spasms. c. frequent loose stools. d. personality changes.

A Rationale: Generalized weakness progressing to flaccidity is a manifestation of hypokalemia. Facial muscle spasms might occur with hypocalcemia. Loose stools are associated with hyperkalemia. Personality changes are not associated with electrolyte disturbances, although changes in mental status are common manifestations with sodium excess or deficit.

Liza's mother is seen in the emergency department at a community hospital. She admits that her mother is taking many tablets of aspirin (salicylates) over the last 24-hour period because of a severe headache. Also, the mother complains of an inability to urinate. The nurse on duty took her vital signs and noted the following: Temp = 97.8 °F; apical pulse = 95; respiration = 32 and deep. Which primary acid-base imbalance is the gentleman at risk for if medical attention is not provided? A. Respiratory Acidosis B. Respiratory Alkalosis C. Metabolic Acidosis D. Metabolic Alkalosis

Answer. C. Metabolic Acidosis Salicylate overdose causes a high anion gap metabolic acidosis in both children and adults. Adults commonly develop a mixed acid-base disorder as a respiratory alkalosis due to direct respiratory centre stimulation occurs as well. This second disorder is uncommon in children.

What is the nurse's primary concern regarding fluid & electrolytes when caring for an elderly pt who is intermittently confused? 1. risk of dehydration 2. risk of kidney damage 3. risk of stroke 4. risk of bleeding

Answer: 1 Rationale 1: As an adult ages, the thirst mechanism declines. Adding this in a pt with an altered level of consciousness, there is an increased risk of dehydration & high serum osmolality. Rationale 2: The risks for kidney damage are not specifically related to aging or fluid & electrolyte issues. Rationale 3: The risk of stroke is not specifically related to aging or fluid & electrolyte issues. Rationale 4: The risk of bleeding is not specifically related to aging or fluid & electrolyte issues.

The nurse is planning care for a pt with severe burns. Which of the following is this pt at risk for developing? 1. intracellular fluid deficit 2. intracellular fluid overload 3. extracellular fluid deficit 4. interstitial fluid deficit

Answer: 1 Rationale 1: Because this pt was severely burned, the fluid within the cells is diminished, leading to an intracellular fluid deficit. Rationale 2: The intracellular fluid is all fluids that exist within the cell cytoplasm & nucleus. Because this pt was severely burned, the fluid within the cells is diminished, leading to an intracellular fluid deficit. Rationale 3: The extracellular fluid is all fluids that exist outside the cell, including the interstitial fluid between the cells. Because this pt was severely burned, the fluid within the cells is diminished, leading to an intracellular fluid deficit. Rationale 4: The extracellular fluid is all fluids that exist outside the cell, including the interstitial fluid between the cells. Because this pt was severely burned, the fluid within the cells is diminished, leading to an intracellular fluid deficit.

A pt, experiencing multisystem fluid volume deficit, has the symptoms of tachycardia, pale, cool skin, & decreased urine output. The nurse realizes these findings are most likely a direct result of which of the following? 1. the body's natural compensatory mechanisms 2. pharmacological effects of a diuretic 3. effects of rapidly infused intravenous fluids 4. cardiac failure

Answer: 1 Rationale 1: The internal vasoconstrictive compensatory reactions within the body are responsible for the symptoms exhibited. The body naturally attempts to conserve fluid internally specifically for the brain & heart. Rationale 2: A diuretic would cause further fluid loss, & is contraindicated. Rationale 3: Rapidly infused intravenous fluids would not cause a decrease in urine output. Rationale 4: The manifestations reported are not indicative of cardiac failure in this pt.

A pregnant pt is admitted with excessive thirst, increased urination, & has a medical diagnosis of diabetes insipidus. The nurse chooses which of the following nursing diagnoses as most appropriate? 1. Risk for Imbalanced Fluid Volume 2. Excess Fluid Volume 3. Imbalanced Nutrition 4. Ineffective Tissue Perfusion

Answer: 1 Rationale 1: The pt with excessive thirst, increased urination & a medical diagnosis of diabetes insipidus is at risk for Imbalanced Fluid Volume due to the pt &'s excess volume loss that can increase the serum levels of sodium. Rationale 2: Excess Fluid Volume is not an issue for pts with diabetes insipidus, especially during the early stages of treatment. Rationale 3: Imbalanced Nutrition does not apply. Rationale 4: Ineffective Tissue Perfusion does not apply

An elderly postoperative pt is demonstrating lethargy, confusion, & a resp rate of 8 per minute. The nurse sees that the last dose of pain medication administered via a pt controlled anesthesia (PCA) pump was within 30 minutes. Which of the following acid-base disorders might this pt be experiencing? 1. respiratory acidosis 2. metabolic acidosis 3. respiratory alkalosis 4. metabolic alkalosis

Answer: 1 Rationale 1: Acute respiratory acidosis occurs due to a sudden failure of ventilation. Overdoses of narcotic or sedative medications can lead to this condition. Rationale 2: The pt condition being described is respiratory not metabolic in nature. Rationale 3: Acute respiratory acidosis occurs due to a sudden failure of ventilation. Overdoses of narcotic or sedative medications can lead to this condition. Rationale 4: Acute respiratory acidosis occurs due to a sudden failure of ventilation. Overdoses of narcotic or sedative medications can lead to this condition. The pt condition being described is respiratory not metabolic in nature.

A pt is receiving intravenous fluids postoperatively following cardiac surgery. Nursing assessments should focus on which postoperative complication? 1. fluid volume excess 2. fluid volume deficit 3. seizure activity 4. liver failure

Answer: 1 Rationale 1: Antidiuretic hormone & aldosterone levels are commonly increased following the stress response before, during, & immediately after surgery. This increase leads to sodium & water retention. Adding more fluids intravenously can cause a fluid volume excess & stress upon the heart & circulatory system. Rationale 2: Adding more fluids intravenously can cause a fluid volume excess, not fluid volume deficit, & stress upon the heart & circulatory system. Rationale 3: Seizure activity would more commonly be associated with electrolyte imbalances. Rationale 4: Liver failure is not anticipated related to postoperative intravenous fluid administration.

An elderly pt with peripheral neuropathy has been taking magnesium supplements. The nurse realizes that which of the following symptoms can indicate hypomagnesaemia? 1. hypotension, warmth, & sweating 2. nausea & vomiting 3. hyperreflexia 4. excessive urination

Answer: 1 Rationale 1: Elevations in magnesium levels are accompanied by hypotension, warmth, & sweating. Rationale 2: Lower levels of magnesium are associated with nausea & vomiting. Rationale 3: Lower levels of magnesium are associated & hyperreflexia. Rationale 4: Urinary changes are not noted.

A pt is diagnosed with hyperphosphatemia. The nurse realizes that this pt might also have an imbalance of which of the following electrolytes? 1. calcium 2. sodium 3. potassium 4. chloride

Answer: 1 Rationale 1: Excessive serum phosphate levels cause few specific symptoms. The effects of high serum phosphate levels on nerves & muscles are more likely the result of hypocalcemia that develops secondary to an elevated serum phosphorus level. The phosphate in the serum combines with ionized calcium, & the ionized serum calcium level falls.

A pt prescribed spironolactone is demonstrating ECG changes & complaining of muscle weakness. The nurse realizes this pt is exhibiting signs of which of the following? 1. hyperkalemia 2. hypokalemia 3. hypercalcemia 4. hypocalcemia

Answer: 1 Rationale 1: Hyperkalemia is serum potassium level greater than 5.0 mEq/L. Decreased potassium excretion is seen in potassium-sparing diuretics such as spironolactone. Common manifestations of hyperkalemia are muscle weakness & ECG changes. Rationale 2: Hypokalemia is seen in non-potassium diuretics such as furosemide. Rationale 3: Hypercalcemia has been associated with thiazide diuretics. Rationale 4: Hypocalcemia is seen in pts who have received many units of citrated blood & is not associated with diuretic use.

A pt who is taking digoxin (Lanoxin) is admitted with possible hypokalemia. Which of the following does the nurse realize might occur with this pt? 1. Digoxin toxicity may occur. 2. A higher dose of digoxin (Lanoxin) may be needed. 3. A diuretic may be needed. 4. Fluid volume deficit may occur.

Answer: 1 Rationale 1: Hypokalemia increases the risk of digitalis toxicity in pts who receive this drug for heart failure. Rationale 2: More digoxin is not needed. Rationale 3: A diuretic may cause further fluid loss. Rationale 4: There is inadequate information to assess for concerns related to fluid volume deficits.

The nurse is caring for a pt diagnosed with renal failure. Which of the following does the nurse recognize as compensation for the acid-base disturbance found in pts with renal failure? 1. The pt breathes rapidly to eliminate carbon dioxide. 2. The pt will retain bicarbonate in excess of normal. 3. The pH will decrease from the present value. 4. The pt's oxygen saturation level will improve.

Answer: 1 Rationale 1: In metabolic acidosis compensation is accomplished through increased ventilation or "blowing off" C02. This raises the pH by eliminating the volatile respiratory acid & compensates for the acidosis. Rationale 2: Because compensation must be performed by the system other than the affected system, the pt cannot retain bicarbonate; the manifestation of metabolic acidosis of renal failure is a lower than normal bicarbonate value. Rationale 3: Metabolic acidosis of renal failure causes a low pH; this is the manifestation of the disease process, not the compensation. Rationale 4: Oxygenation disturbance is not part of the acid-base status of the pt with renal failure.

A pt is diagnosed with severe hyponatremia. The nurse realizes this pt will mostly likely need which of the following precautions implemented? 1. seizure 2. infection 3. neutropenic 4. high-risk fall

Answer: 1 Rationale 1: Severe hyponatremia can lead to seizures. Seizure precautions such as a quiet environment, raised side rails, & having an oral airway at the bedside would be included. Rationale 2: Infection precautions not specifically indicated for a pt with hyponatremia. Rationale 3: Neutropenic precautions not specifically indicated for a pt with hyponatremia. Rationale 4: High-risk fall precautions not specifically indicated for a pt with hyponatremia.

When analyzing an arterial blood gas report of a pt with COPD & respiratory acidosis, the nurse anticipates that compensation will develop through which of the following mechanisms? 1. The kidneys retain bicarbonate. 2. The kidneys excrete bicarbonate. 3. The lungs will retain carbon dioxide. 4. The lungs will excrete carbon dioxide.

Answer: 1 Rationale 1: The kidneys will compensate for a respiratory disorder by retaining bicarbonate. Rationale 2: Excreting bicarbonate causes acidosis to develop. Rationale 3: Retaining carbon dioxide causes respiratory acidosis. Rationale 4: Excreting carbon dioxide causes respiratory alkalosis

The nurse is planning care for a pt with fluid volume overload & hyponatremia. Which of the following should be included in this pt's plan of care? 1. Restrict fluids. 2. Administer intravenous fluids. 3. Provide Kayexalate. 4. Administer intravenous normal saline with furosemide.

Answer: 1 Rationale 1: The nursing care for a pt with hyponatremia is dependent on the cause. Restriction of fluids to 1,000 mL/day is usually implemented to assist sodium increase & to prevent the sodium level from dropping further due to dilution. Rationale 2: The administration of intravenous fluids would be indicated in fluid volume deficit & hypernatremia. Rationale 3: Kayexalate is used in pts with hyperkalemia. Rationale 4: The administration of normal saline with furosemide is used to increase calcium secretion.

The nurse is caring for a pt who is anxious & dizzy following a traumatic experience. The arterial blood gas findings include: pH 7.48, PaO2 110, PaCO2 25, & HCO3 24. The nurse would anticipate which initial intervention to correct this problem? 1. Encourage the pt to breathe in & out slowly into a paper bag. 2. Immediately administer oxygen via a mask & monitor oxygen saturation. 3. Prepare to start an intravenous fluid bolus using isotonic fluids. 4. Anticipate the administration of intravenous sodium bicarbonate.

Answer: 1 Rationale 1: This pt is exhibiting signs of hyperventilation that is confirmed with the blood gas results of respiratory alkalosis. Breathing into a paper bag will help the pt to retain carbon dioxide & lower oxygen levels to normal, correcting the cause of the problem. Rationale 2: The oxygen levels are high, so oxygen is not indicated, & would exacerbate the problem if given. Intravenous fluids would not be the initial intervention. Rationale 3: Not enough information is given to determine the need for intravenous fluids. Rationale 4: Bicarbonate would be contraindicated as the pH is already high.

A pt with a history of stomach ulcers is diagnosed with hypophosphatemia. Which of the following interventions should the nurse include in this pt's plan of care? 1. Request a dietitian consult for selecting foods high in phosphorous. 2. Provide aluminum hydroxide antacids as prescribed. 3. Instruct pt to avoid poultry, peanuts, & seeds. 4. Instruct to avoid the intake of sodium phosphate.

Answer: 1 Rationale 1: Treatment of hypophosphatemia includes treating the underlying cause & promoting a high phosphate diet, especially milk, if it is tolerated. Other foods high in phosphate are dried beans & peas, eggs, fish, organ meats, Brazil nuts & peanuts, poultry, seeds & whole grains. Rationale 2: Phosphate-binding antacids, such as aluminum hydroxide, should be avoided. Rationale 3: Poultry, peanuts, & seeds are part of a high phosphate diet. Rationale 4: Mild hypophosphatemia may be corrected by oral supplements, such as sodium phosphate.

An elderly pt comes into the clinic with the complaint of watery diarrhea for several days with abdominal & muscle cramping. The nurse realizes that this pt is demonstrating which of the following? 1. hypernatremia 2. hyponatremia 3. fluid volume excess 4. hyperkalemia

Answer: 2 Rationale 1: Hypernatremia is associated with fluid retention & overload. FVE is associated with hypernatremia. Rationale 2: This elderly pt has watery diarrhea, which contributes to the loss of sodium. The abdominal & muscle cramps are manifestations of a low serum sodium level. Rationale 3: This pt is more likely to develop clinical manifestations associated with fluid volume deficit. Rationale 4: Hyperkalemia is associated with cardiac dysrhythmias.

The nurse observes a pt's respirations & notes that the rate is 30 per minute & the respirations are very deep. The metabolic disorder this pt might be demonstrating is which of the following? 1. hypernatremia 2. increasing carbon dioxide in the blood 3. hypertension 4. pain

Answer: 2 Rationale 1: Hypernatremia is associated with profuse sweating & diarrhea. Rationale 2: Acute increases in either carbon dioxide or hydrogen ions in the blood stimulate the respiratory center in the brain. As a result, both the rate & depth of respiration increase. The increased rate & depth of lung ventilation eliminates carbon dioxide from the body, & carbonic acid levels fall, which brings the pH to a more normal range. Rationale 3: The respiratory rate in a pt exhibiting hypertension is not altered. Rationale 4: Pain may be manifested in rapid, shallow respirations.

A pt is prescribed 10 mEq of potassium chloride. The nurse realizes that the reason the pt is receiving this replacement is 1. to sustain respiratory function. 2. to help regulate acid-base balance. 3. to keep a vein open. 4. to encourage urine output.

Answer: 2 Rationale 1: Potassium does not sustain respiratory function. Rationale 2: Electrolytes have many functions. They assist in regulating water balance, help regulate & maintain acid-base balance, contribute to enzyme reactions, & are essential for neuromuscular activity. Rationale 3: Intravenous fluids are used to keep venous access not potassium. Rationale 4: Urinary output is impacted by fluid intake not potassium.

A pt with fluid retention related to renal problems is admitted to the hospital. The nurse realizes that this pt could possibly have which of the following electrolyte imbalances? 1. hypokalemia 2. hypernatremia 3. carbon dioxide 4. magnesium

Answer: 2 Rationale 1: The kidneys are the principal organs involved in the elimination of potassium. Renal failure is often associated with elevations potassium levels. Rationale 2: The kidney is the primary regulator of sodium in the body. Fluid retention is associated with hypernatremia. Rationale 3: Carbon dioxide abnormalities are not normally seen in this type of pt. Rationale 4: Magnesium abnormalities are not normally seen in this type of pt.

The pt, newly diagnosed with diabetes mellitus, is admitted to the emergency department with nausea, vomiting, & abdominal pain. ABG results reveal a pH of 7.2 & a bicarbonate level of 20 mEq/L. Which other assessment findings would the nurse anticipate in this pt? Select all that apply. 1. tachycardia 2. weakness 3. dysrhythmias 4. Kussmaul's respirations 5. cold, clammy skin

Answer: 2,3,4 Rationale: Further assessment findings of this condition are weakness, bradycardia, dysrhythmias, general malaise, decreased level of consciousness, warm flushed skin, & Kussmaul's respirations. Rationale: These ABG results, coupled with the pt's recent diagnosis of diabetes mellitus & history of vomiting would lead the nurse to suspect metabolic acidosis. Further assessment findings of this condition are weakness, bradycardia, dysrhythmias, general malaise, decreased level of consciousness, warm flushed skin, & Kussmaul's respirations.

A postoperative pt is diagnosed with fluid volume overload. Which of the following should the nurse assess in this pt? 1. poor skin turgor 2. decreased urine output 3. distended neck veins 4. concentrated hemoglobin & hematocrit levels

Answer: 3 Rationale 1: Poor skin turgor is associated with fluid volume deficit. Rationale 2: Decreased urine output is associated with fluid volume deficit. Rationale 3: Circulatory overload causes manifestations such as a full, bounding pulse; distended neck & peripheral veins; increased central venous pressure; cough; dyspnea; orthopnea; rales in the lungs; pulmonary edema; polyuria; ascites; peripheral edema, or if severe, anasarca, in which dilution of plasma by excess fluid causes a decreased hematocrit & blood urea nitrogen (BUN); & possible cerebral edema. Rationale 4: Increased hemoglobin & hematocrit values are associated with fluid volume deficit.

A pt is admitted for treatment of hypercalcemia. The nurse realizes that this pt's intravenous fluids will most likely be which of the following? 1. dextrose 5% & water 2. dextrose 5% & ? normal saline 3. dextrose 5% & ? normal saline 4. normal saline

Answer: 4 Rationale 1: If isotonic saline is not used, the pt is at risk for hyponatremia in addition to the hypercalcemia. Rationale 2: This solution is hypotonic. Isotonic saline is used because sodium excretion is accompanied by calcium excretion through the kidneys. Rationale 3: This solution is hypotonic. Isotonic saline is used because sodium excretion is accompanied by calcium excretion through the kidneys. Rationale 4: Isotonic saline is used because sodium excretion is accompanied by calcium excretion through the kidneys.

The nurse is admitting a pt who was diagnosed with acute renal failure. Which of the following electrolytes will be most affected with this disorder? 1. calcium 2. magnesium 3. phosphorous 4. potassium

Answer: 4 Rationale 1: This pt will be less likely to develop a calcium imbalance. Rationale 2: This pt will be less likely to develop a magnesium imbalance. Rationale 3: This pt will be less likely to develop a phosphorous imbalance. Rationale 4: Because the kidneys are the principal organs involved in the elimination of potassium, renal failure

A 28-year-old male pt is admitted with diabetic ketoacidosis. The nurse realizes that this pt will have a need for which of the following electrolytes? 1. sodium 2. potassium 3. calcium 4. magnesium

Answer: 4 Rationale 4: One risk factor for hypomagnesaemia is an endocrine disorder, including diabetic ketoacidosis.

An old man was admitted to hospital in a coma. Analysis of the arterial blood gave the following values: PCO2 16 mm Hg, HCO3- 5 mmol/L and pH 7.1. As a well-rounded nurse, you know that the normal value for HCO3 is: A. 20 mmol/L B. 24 mmol/L C. 29 mmol/L D. 31 mmol/L

Answer: B. 24 mmol/L The normal value for bicarbonate (HCO3) is 22-26 mmol/L or mEq/L. It may vary slightly among different laboratories. The given values show the common measurement range of results for these tests. Some laboratories use different measurements or may test different specimens.

A patient who is hospitalized due to vomiting and a decreased level of consciousness displays slow and deep (Kussmaul breathing), and he is lethargic and irritable in response to stimulation. The doctor diagnosed him of having dehydration. Measurement of arterial blood gas shows pH 7.0, PaO2 90 mm Hg, PaCO2 22 mm Hg, and HCO3 14 mmol/L; other results are Na+ 120 mmol/L, K+ 2.5 mmol/L, and Cl- 95 mmol/L. As a knowledgeable nurse, you know that the normal value for PaCO2 is: A. 22 mm Hg B. 36 mm Hg C. 48 mm Hg D. 50 mm Hg

Answer: B. 36 mm Hg The normal range for PaCO2 is from 35 to 35 mm Hg.

A company driver is found at the scene of an automobile accident in a state of emotional distress. He tells the paramedics that he feels dizzy, tingling in his fingertips, and does not remember what happened to his car. Respiratory rate is rapid at 34/minute. Which primary acid-base disturbance is the young man at risk for if medical attention is not provided? A. Respiratory Acidosis B. Respiratory Alkalosis C. Metabolic Acidosis D. Metabolic Alkalosis

Answer: B. Respiratory Alkalosis Hyperventilation is typically the underlying cause of respiratory alkalosis. Hyperventilation is also known as overbreathing. When someone is hyperventilating, they tend to breathe very deeply or very rapidly.

An old beggar was admitted to the emergency department due to shortness of breath, fever, and a productive cough. Upon examination, crackles and wheezes are noted in the lower lobes; he appears to be tachycardic and has a bounding pulse. Measurement of arterial blood gas shows pH 7.2, PaCO2 66 mm Hg, HCO3 27 mmol/L, and PaO2 65 mm Hg. As a knowledgeable nurse, you know that the normal value for pH is: A. 7.20 B. 7.30 C. 7.40 D. 7.50

Answer: C. 7.40 Normal blood pH must be maintained within a narrow range of 7.35-7.45 to ensure the proper functioning of metabolic processes and the delivery of the right amount of oxygen to tissues. Acidosis refers to an excess of acid in the blood that causes the pH to fall below 7.35, and alkalosis refers to an excess of base in the blood that causes the pH to rise above 7.45.

In a patient undergoing surgery, it was vital to aspirate the contents of the upper gastrointestinal tract. After the operation, the following values were acquired from an arterial blood sample: pH 7.55, PCO2 52 mm Hg and HCO3- 40 mmol/l. What is the underlying disorder? A. Respiratory Acidosis B. Respiratory Alkalosis C. Metabolic Acidosis D. Metabolic Alkalosis

Answer: D. Metabolic Alkalosis NGT suctioning, vomiting, hypokalemia and overdosage of NaHCO3 are considered risk factors of metabolic alkalosis.

A patient comes to the clinic complaining of frequent, watery stools for the last 2 days. Which action should the nurse take first? a. Obtain the baseline weight. b. Check the patient's blood pressure. c. Draw blood for serum electrolyte levels. d. Ask about any extremity numbness or tingling.

B

A patient is admitted to the emergency department with severe fatigue and confusion. Laboratory studies are done. Which laboratory value will require the most immediate action by the nurse? a. Arterial blood pH is 7.32. b. Serum calcium is 18 mg/dL. c. Serum potassium is 5.1 mEq/L. d. Arterial oxygen saturation is 91%.

B

The nurse obtains all of the following assessment data about a patient with fluid-volume deficit caused by a massive burn injury. Which of the following assessment data will be of greatest concern? a. Oral fluid intake is 100 ml for the last 8 hours. b. The blood pressure is 90/40 mm Hg. c. Urine output is 30 ml over the last hour. d. There is prolonged skin tenting over the sternum.

B Rationale: The blood pressure indicates that the patient may be developing hypovolemic shock as a result of fluid loss. This will require immediate intervention to prevent the complications associated with systemic hypoperfusion. The poor oral intake, decreased urine output, and skin tenting all indicate the need for increasing the patient's fluid intake but not as urgently as the hypotension.

The nurse assesses a pregnant patient with eclampsia who is receiving IV magnesium sulfate and obtains all the following information. Which of these assessment data is most important to report to the health care provider immediately? a. The patient reports feeling "sick to my stomach." b. The patellar and triceps reflexes are absent. c. The patient has been sleeping most of the day. d. The bibasilar breath sounds are decreased.

B Rationale: The loss of the deep tendon reflexes indicates that the patient's magnesium level may be reaching toxic levels. Nausea and lethargy are also side effects associated with magnesium elevation and should be reported, but they are not as significant as the loss of deep tendon reflexes. The decreased breath sounds suggest that the patient needs to cough and deep breathe to prevent atelectasis.

A patient has a parenteral nutrition infusion of 25% dextrose. A student nurse asks the nurse why a peripherally inserted central catheter was inserted. Which response by the nurse is most appropriate? a. "There is a decreased risk for infection when 25% dextrose is infused through a central line." b. "The prescribed infusion can be given much more rapidly when the patient has a central line." c. "The 25% dextrose is hypertonic and will be more rapidly diluted when given through a central line." d. "The required blood glucose monitoring is more accurate when samples are obtained from a central line."

C

A patient who has been NPO with gastric suction and IV fluid replacement for 3 days following surgery develops nausea and vomiting, weakness, and confusion and has a serum sodium level of 125 mEq/L (125 mmol/L). The nurse reviews the health care provider's postoperative medication and IV orders. Which health care provider order should the nurse question? a. Administer 3% saline if serum sodium drops to less than 128 mEq/L. b. IV morphine sulfate 4 mg every 2 hours prn. c. Infuse 5% dextrose in water at 125 ml/hr. d. Give IV metoclopramide (Reglan) 10 mg every 6 hours prn nausea.

C Rationale: Because the patient's gastric suction has been depleting electrolytes, the IV solution should include electrolyte replacement. Solutions such as lactated Ringer's solution would usually be ordered for this patient. The other orders are appropriate for a postoperative patient with gastric suction.

A patient receiving iso-osmolar continuous tube feedings develops restlessness, agitation, and weakness. The laboratory data that will be of most concern to the nurse is a. K+ 3.4 mEq/L (3.4 mmol/L). b. Ca+2 7.8 mg/dl (1.95 mmol/L). c. Na+ 154 mEq/L (154 mmol/L). d. HPO4- 3 4.8 mg/dl (1.55 mmol/L).

C Rationale: The elevated serum sodium level is consistent with the patient's neurologic symptoms and indicates a need for immediate action to prevent further serious complications such as seizures. The potassium and calcium levels vary slightly from the normal but do not require any immediate action by the nurse. The phosphate level is within the normal parameters.

A patient with renal insufficiency develops lethargy and somnolence with a blood pressure of 100/60, pulse 62, and respirations 10. The nurse notes that the patient has been taking an aluminum hydroxide/magnesium hydroxide suspension (Maalox) for indigestion. The nurse anticipates that management of the patient will include IV administration of a. magnesium sulfate. b. potassium chloride. c. calcium gluconate. d. sodium chloride.

C Rationale: The patient has a history and symptoms consistent with hypermagnesemia, so calcium gluconate or calcium chloride will be the initial therapy to oppose the effects of excess magnesium on cell function. Magnesium sulfate infusion is contraindicated because it will increase the serum magnesium level. Potassium chloride and sodium chloride will not impact the patient's symptoms and should be avoided in a patient with renal insufficiency.

Following bowel surgery 2 days ago, a patient has been receiving normal saline intravenously at 100 ml/hr, has a nasogastric tube to low, intermittent suction, and is NPO. An assessment finding that indicates a need to contact the health care provider immediately is a a. weight gain of 2 pounds above the preoperative weight. b. an oral temperature of 100.1° F with bibasilar lung crackles. c. gradually decreasing level of consciousness (LOC). d. serum sodium level of 138 mEq/L (138 mmol/L).

C Rationale: The patient's history and change in LOC could be indicative of several fluid and electrolyte disturbances: extracellular fluid (ECF) excess, ECF deficit, hyponatremia, hypernatremia, hypokalemia, or metabolic alkalosis. Further diagnostic information will be ordered by the health care provider to determine the cause of the change in LOC and the appropriate interventions. A weight gain of 2 pounds (<1 kg) since surgery would not be clinically significant unless associated with other symptoms. The oral temperature elevation and crackles would initially be addressed by having the patient cough and deep breathe. The sodium level is within the normal range of 135 to 145 mEq/L.

An elderly pt who is being medicated for pain had an episode of incontinence. The nurse realizes that this pt is at risk for developing 1. dehydration. 2. over-hydration. 3. fecal incontinence. 4. a stroke.

Correct Answer: 1 Rationale 1: Functional changes of aging also affect fluid balance. Older adults who have self-care deficits, or who are confused, depressed, tube-fed, on bed rest, or taking medications (such as sedatives, tranquilizers, diuretics, & laxatives), are at greatest risk for fluid volume imbalance. Rationale 2: There is inadequate evidence to support the risk of over-hydration. Rationale 3: There is inadequate evidence to support the risk of fecal incontinence. Rationale 4: There is inadequate evidence to support the risk of a stroke.

Which pts are at risk for the development of hypercalcemia? Select all that apply. 1. the pt with a malignancy 2. the pt taking lithium 3. the pt who uses sunscreen to excess 4. the pt with hyperparathyroidism 5. the pt who overuses antacids

Correct Answer: 1,2,4,5 Rationale 1: Pts with malignancy are at risk for development of hypercalcemia due to destruction of bone or the production of hormone-like substances by the malignancy. Rationale 2: Lithium & overuse of antacids can result in hypercalcemia. Hypercalcemia can result from hyperparathyroidism which causes release of calcium from the bones, increased calcium absorption in the intestines & retention of calcium by the kidneys. Rationale 3: The pt who uses sunscreen to excess is more likely to have a vitamin D deficiency which would result in hypocalcemia. Rationale 4: Hypercalcemia can result from hyperparathyroidism which causes release of calcium from the bones, increased calcium absorption in the intestines & retention of calcium by the kidneys. Rationale 5: Lithium & overuse of antacids can result in hypercalcemia.

A pt is admitted with burns over 50% of his body. The nurse realizes that this pt is at risk for which of the following electrolyte imbalances? 1. hypercalcemia 2. hypophosphatemia 3. hypernatremia 4. hypermagnesemia

Correct Answer: 2 Rationale 1: Pts who experience burns are not at an increased risk for developing increased blood calcium levels. Rationale 2: Causes of hypophosphatemia include stress responses & extensive burns. Rationale 3: Pts who experience burns are not at an increased risk for developing increased blood sodium levels. Rationale 4: Pts who experience burns are not at an increased risk for developing increased blood magnesium levels.

A patient is receiving a 3% saline continuous IV infusion for hyponatremia. Which assessment data will require the most rapid response by the nurse? a. The patient's radial pulse is 105 beats/minute. b. There is sediment and blood in the patient's urine. c. The blood pressure increases from 120/80 to 142/94. d. There are crackles audible throughout both lung fields.

D

The nurse is caring for a patient who has a calcium level of 12.1 mg/dL. Which nursing action should the nurse include on the care plan? a. Maintain the patient on bed rest. b. Auscultate lung sounds every 4 hours. c. Monitor for Trousseau's and Chvostek's signs. d. Encourage fluid intake up to 4000 mL every day.

D

To prevent laryngeal spasms and respiratory arrest in a patient who is at risk for hypocalcemia, an early sign of hypocalcemia the nurse should assess for is a. weak hand grips. b. confusion. c. constipation. d. lip numbness.

D Rationale: Numbness and tingling around the lips or in the fingers are early signs of hypocalcemia. Muscle weakness, confusion, and constipation may also occur, but these are later signs of low calcium levels.

A postoperative patient with a nasogastric tube connected to low, intermittent suction is complaining of anxiety and severe incisional pain. The patient has a respiratory rate of 32 breaths per minute. The arterial blood gases (ABG) are pH 7.50, PaO2 90 mm Hg, PaCO2 30 mm Hg, and HCO3 23 mm Hg. Which intervention is most appropriate for the nurse to implement? a. Disconnect the nasogastric tube until the pH is within the normal range. b. Administer the prescribed sodium bicarbonate 50 mEq intravenously. c. Teach the patient about the importance of taking slow, deep breaths. d. Give the patient the ordered morphine sulfate 4 mg intravenously.

D Rationale: The ABGs indicate respiratory alkalosis, which is caused by the increased respiratory rate. Because the increased respirations are most likely caused by the incisional pain, the first action by the nurse should be to medicate the patient for pain. The nasogastric tube is needed for postoperative gastric decompression and should remain connected to suction. Sodium bicarbonate administration will further increase the pH. Teaching the patient to take slow, deep breaths may be helpful, but it is unlikely to be effective until the pain level is decreased.

A patient who has required prolonged mechanical ventilation has the following arterial blood gas results: pH 7.48, PaO2 85 mm Hg, PaCO2 32 mm Hg, and HCO3 25 mEq/L. The nurse interprets these results as a. metabolic acidosis. b. metabolic alkalosis. c. respiratory acidosis. d. respiratory alkalosis.

D Rationale: The pH indicates that the patient has alkalosis and the low PaCO2 indicates a respiratory cause. The other responses are incorrect based on the pH and the normal HCO3.

Age-related changes that affect the hematologic system include: (Select all that apply.) a. Bone marrow in the long bones decline. b. The number of stem cells in the marrow increases. c. Lymphocyte function, especially cellular immunity, decreases. d. Platelet adhesiveness decreases.

a. Bone marrow in the long bones decline. c. Lymphocyte function, especially cellular immunity, decreases.

A young couple comes to the obstetrician's office prior to attempting to conceive. They have concerns regarding possible genetic defects from a long family history in both families. Which of the following topics should the nurse explore with the couple in order to prepare them for the genetic evaluation? a. Communication should include an assessment of the positive and negative outcomes of the test b. All genetic testing, depending on the results, does not need to remain confidential. c. Informed consent would be nice to have but is not mandatory. d. All genetic testing falls into voluntary and involuntary categories.

a. Communication should include an assessment of the positive and negative outcomes of the test Rationale: With knowledge of available genetic tests and the many implications related to genetic testing, the nurse can assist clients as they weigh choices regarding genetic testing #2 is incorrect because clients should engage in genetic testing with full knowledge, confidentiality and act autonomously. # 3 is incorrect because informed consent in needed in order to do the testing. #4 is incorrect because all genetic testing should be voluntary.

A nurse in the outpatient clinic is caring for a patient who has a magnesium level of 1.3 mg/dL. Which assessment would be most important for the nurse to make? a. Daily alcohol intake b. Intake of dietary protein c. Multivitamin/mineral use d. Use of over-the-counter (OTC) laxatives

a. Daily alcohol intake

The nurse has provided nutritional teaching on foods high in folate to a client with folate deficiency related to malabsorption syndromes and poor nutrition. Which of the following foods, if chosen by the client, indicates that the client understands the teaching? a. Liver and dark green leafy vegetables b. Whole milk and eggs c. Potatoes and carrots d. Bread and fish

a. Liver and dark green leafy vegetables Rationale: Foods high in folate are liver, orange juice, cereals, whole grains, beans, nuts, and dark leafy vegetables like spinach.

A patient who has been receiving diuretic therapy is admitted to the emergency department with a serum potassium level of 3.0 mEq/L. The nurse should alert the health care provider immediately that the patient is on which medication? a. Oral digoxin (Lanoxin) 0.25 mg daily b. Ibuprofen (Motrin) 400 mg every 6 hours c. Metoprolol (Lopressor) 12.5 mg orally daily d. Lantus insulin 24 U subcutaneously every evening

a. Oral digoxin (Lanoxin) 0.25 mg daily

Following a thyroidectomy, a patient complains of "a tingling feeling around my mouth." Which assessment should the nurse complete immediately? a. Presence of the Chvostek's sign b. Abnormal serum potassium level c. Decreased thyroid hormone level d. Bleeding on the patient's dressing

a. Presence of the Chvostek's sign

Edema that forms in clients with kidney disease is due to: a. Reduced plasma oncotic pressure, so that fluid is not drawn into the capillaries from interstitial tissues b. Decreased capillary hydrostatic pressures pushing fluid into the interstitial tissues c. Capillaries becoming less permeable, allowing fluid to escape into interstitial tissues d. Obstructed lymph flow that assists the movement of fluid from the interstitial tissues back into the vascular compartment

a. Reduced plasma oncotic pressure, so that fluid is not drawn into the capillaries from interstitial tissues Rationale: The edema is due to low levels of plasma proteins that exist with this disease, altering the oncotic pressure that helps regulate fluid movement in the vascular space moving into interstitial area. Increased capillary hydrostatic pressure is the cause. Capillaries have increased permeability when edema formation is possible. Obstructed lymph flow impairs the movement of fluid from interstitial tissues back into the vascular compartment, resulting in edema.

A client suffering from a narcotic overdose is seen in the Emergency Department. The client is confused, with warm, flushed skin, headache, and weakness. Vital signs of noted are T 102.6, HR 128, R 24, and BP 130/86. A blood gas analysis sample was drawn on room air, and the results are as follows: pH 7.33, PaCO2 53, PaO2 72, HCO3 24. This client is at risk for: a. Respiratory acidosis b. Respiratory alkalosis c. Metabolic acidosis d. Metabolic alkalosis

a. Respiratory acidosis Rationale: Narcotic overdose causes more carbonic acid levels to rise because of hypoventilation and carbon dioxode retention.

The nurse working in the emergency department (ED) admits a patient with renal failure and a serum potassium level of 8.0 mEq/L. All these orders are received from the health care provider. Which order will the nurse implement first? a. Place the patient on a cardiac monitor. b. Insert a retention catheter. c. Administer Kayexalate 15 g orally. d. Give IV furosemide (Lasix) 40 mg.

A Rationale: Because cardiac dysrhythmias are a common and potentially fatal complication of hyperkalemia, the first action should be to initiate cardiac monitoring. The other orders are also appropriate and should be accomplished as quickly as possible.

A pregnant patient with a family history of cystic fibrosis (CF) asks for information about genetic testing. The most appropriate action by the nurse is to a. refer the patient to a qualified genetic counselor. b. ask the patient why genetic testing is important to her. c. remind the patient that genetic testing has many social implications. d. tell the patient that cystic fibrosis is an autosomal-recessive disorder.

ANS: A A genetic counselor is best qualified to address the multiple issues involved in genetic testing for a patient who is considering having children. Although genetic testing does have social implications, a pregnant patient will be better served by a genetic counselor who will have more expertise in this area. CF is an autosomal-recessive disorder, but the patient might not understand the implications of this statement. Asking why the patient feels genetic testing is important may imply to the patient that the nurse is questioning her value system regarding issues such as abortion.

Which of these findings is the best indicator that the fluid resuscitation for a patient with hypovolemic shock has been successful? a. Hemoglobin is within normal limits. b. Urine output is 60 mL over the last hour. c. Pulmonary artery wedge pressure (PAWP) is normal. d. Mean arterial pressure (MAP) is 65 mm Hg.

ANS: B Assessment of end organ perfusion, such as an adequate urine output, is the best indicator that fluid resuscitation has been successful. The hemoglobin level, PAWP, and MAP are useful in determining the effects of fluid administration, but they are not as useful as data indicating good organ perfusion.

A patient whose mother has been diagnosed with BRCA gene-related breast cancer asks the nurse, "Do you think I should be tested for the gene?" Which response by the nurse is most appropriate? a. "In most cases, breast cancer is not caused by the BRCA gene." b. "It depends on how you will feel if the test is positive for the BRCA gene." c. "There are many things to consider before deciding to have genetic testing." d. "You should decide first whether you are willing to have a double mastectomy."

ANS: C Although presymptomatic testing for genetic disorders allows patients to take action (such as mastectomy) to prevent the development of some genetically caused disorders, patients also need to consider that test results in their medical file may impact insurance, employability, etc. Telling a patient that a decision about mastectomy should be made before testing implies that the nurse has made a judgment about what the patient should do if the test is positive. Although the patient may need to think about her reaction if the test is positive, other issues (e.g., insurance) also should be considered. Although most breast cancers are not related to BRCA gene alterations, the patient with the gene alteration has a markedly increased risk for breast cancer.

A man with mild hemophilia asks the nurse, "Will my children be hemophiliacs?" Which response by the nurse is appropriate? a. "All of your children will be at risk for hemophilia." b. "Hemophilia is a multifactorial inherited condition." c. "Only your male children are at risk for hemophilia." d. "Your female children will be carriers for hemophilia."

ANS: D Because hemophilia is caused by a mutation of the X-chromosome, all female children of a man with hemophilia are carriers of the disorder and can transmit the mutated gene to their offspring. Sons of a man with hemophilia will not have the disorder. Hemophilia is caused by a genetic mutation and is not a multifactorial inherited condition.

A pt is diagnosed with hypokalemia. After reviewing the pt's current medications, which of the following might have contributed to the pt's health problem? 1. corticosteroid 2. thiazide diuretic 3. narcotic 4. muscle relaxer

Answer: 1 Rationale 1: Excess potassium loss through the kidneys is often caused by such meds as corticosteroids, potassium-wasting diuretics, amphotericin B, & large doses of some antibiotics. Rationale 2: Excessive sodium is lost with the use of thiazide diuretics. Rationale 3: Narcotics do not typically affect electrolyte balance. Rationale 4: Muscle relaxants do not typically affect electrolyte balance.

A pt's blood gases show a pH greater of 7.53 & bicarbonate level of 36 mEq/L. The nurse realizes that the acid-base disorder this pt is demonstrating is which of the following? 1. respiratory acidosis 2. metabolic acidosis 3. respiratory alkalosis 4. metabolic alkalosis

Answer: 4 Rationale 1& 2: Respiratory acidosis & metabolic acidosis are both consistent with pH less than 7.35. Rationale 3: Respiratory alkalosis is associated with a pH greater than 7.45 & a PaCO2 of less than 35 mmHG. It is caused by respiratory related conditions. Rationale 4: Arterial blood gases (ABGs) show a pH greater than 7.45 & bicarbonate level greater than 26 mEq/L when the pt is in metabolic alkalosis.

A patient who had a transverse colectomy for diverticulosis 18 hours ago has nasogastric suction and is complaining of anxiety and incisional pain. The patient's respiratory rate is 32 breaths/minute and the arterial blood gases (ABGs) indicate respiratory alkalosis. Which action should the nurse take first? a. Discontinue the nasogastric suction. b. Give the patient the PRN IV morphine sulfate 4 mg. c. Notify the health care provider about the ABG results. d. Teach the patient how to take slow, deep breaths when anxious.

B

When assessing a pregnant patient with eclampsia who is receiving IV magnesium sulfate, which finding should the nurse report to the health care provider immediately? a. The bibasilar breath sounds are decreased. b. The patellar and triceps reflexes are absent. c. The patient has been sleeping most of the day. d. The patient reports feeling "sick to my stomach."

B

When caring for a patient with renal failure on a low phosphate diet, the nurse will inform unlicensed assistive personnel (UAP) to remove which food from the patient's food tray? a. Grape juice b. Milk carton c. Mixed green salad d. Fried chicken breast

B

Which action can the registered nurse (RN) who is caring for a critically ill patient with multiple IV lines delegate to an experienced licensed practical/vocational nurse (LPN/LVN)? a. Administer IV antibiotics through the implantable port. b. Monitor the IV sites for redness, swelling, or tenderness. c. Remove the patient's nontunneled subclavian central venous catheter. d. Adjust the flow rate of the 0.9% normal saline in the peripheral IV line.

B

A patient is receiving 3% NaCl solution for correction of hyponatremia. During administration of the solution, the most important assessment for the nurse to monitor is a. peripheral pulses. b. lung sounds. c. peripheral edema. d. urinary output.

B Rationale: Hypertonic solutions cause water retention, so the patient should be monitored for symptoms of fluid excess. Crackles in the lungs may indicate the onset of pulmonary edema and are the most serious of the symptoms of fluid excess listed. Bounding peripheral pulses, peripheral edema, or changes in urine output are also important to monitor when administering hypertonic solutions, but they do not indicate acute respiratory or cardiac decompensation.

When teaching a patient with renal failure about a low-phosphate diet, the nurse will include information to restrict a. intake of green, leafy vegetables. b. the amount of high-fat foods. c. ingestion of dairy products. d. the quantity of fruits and juices.

C Rationale: Foods high in phosphate include milk and other dairy products, so these are restricted on low-phosphate diets. Green, leafy vegetables, high-fat foods, and fruits/juices are not high in phosphate and are not restricted.

A nurse is assessing a newly admitted patient with chronic heart failure who forgot to take prescribed medications and seems confused. The patient complains of "just blowing up" and has peripheral edema and shortness of breath. Which assessment should the nurse complete first? a. Skin turgor b. Heart sounds c. Mental status d. Capillary refill

C

A patient who has a small cell carcinoma of the lung develops syndrome of inappropriate antidiuretic hormone (SIADH). The nurse should notify the health care provider about which assessment finding? a. Reported weight gain b. Serum hematocrit of 42% c. Serum sodium level of 120 mg/dL d. Total urinary output of 280 mL during past 8 hours

C

After receiving change-of-shift report, which patient should the nurse assess first? a. Patient with serum potassium level of 5.0 mEq/L who is complaining of abdominal cramping b. Patient with serum sodium level of 145 mEq/L who has a dry mouth and is asking for a glass of water c. Patient with serum magnesium level of 1.1 mEq/L who has tremors and hyperactive deep tendon reflexes d. Patient with serum phosphorus level of 4.5 mg/dL who has multiple soft tissue calcium-phosphate precipitates

C

An older patient receiving iso-osmolar continuous tube feedings develops restlessness, agitation, and weakness. Which laboratory result should the nurse report to the health care provider immediately? a. K+ 3.4 mEq/L (3.4 mmol/L) b. Ca+2 7.8 mg/dL (1.95 mmol/L) c. Na+ 154 mEq/L (154 mmol/L) d. PO4-3 4.8 mg/dL (1.55 mmol/L)

C

The nurse assesses a patient who has been hospitalized for 2 days. The patient has been receiving normal saline IV at 100 mL/hr, has a nasogastric tube to low suction, and is NPO. Which assessment finding would be a priority for the nurse to report to the health care provider? a. Oral temperature of 100.1° F b. Serum sodium level of 138 mEq/L (138 mmol/L) c. Gradually decreasing level of consciousness (LOC) d. Weight gain of 2 pounds (1 kg) above the admission weight

C

The nurse notes that a patient who was admitted with diabetic ketoacidosis has rapid, deep respirations. Which action should the nurse take? a. Give the prescribed PRN lorazepam (Ativan). b. Start the prescribed PRN oxygen at 2 to 4 L/min. c. Administer the prescribed normal saline bolus and insulin. d. Encourage the patient to take deep, slow breaths with guided imagery.

C

A patient who was involved in a motor vehicle crash has had a tracheostomy placed to allow for continued mechanical ventilation. How should the nurse interpret the following arterial blood gas results: pH 7.48, PaO2 85 mm Hg, PaCO2 32 mm Hg, and HCO3 25 mEq/L? a. Metabolic acidosis b. Metabolic alkalosis c. Respiratory acidosis d. Respiratory alkalosis

D

When evaluating the response to treatment for a patient with a fluid imbalance, the most important assessment to include is a. skin turgor. b. presence of edema. c. hourly urine output. d. daily weight.

D Rationale: Daily weight is the most easily obtained and accurate means of assessing volume status. Skin turgor varies considerably with age; considerable fluid-volume excess may be present before fluid moves into the interstitial space and causes edema; and hourly urine outputs do not take account of fluid intake or of fluid loss through insensible loss, sweating, or loss from the gastrointestinal tract or wounds.

Dave, a 6-year-old boy, was rushed to the hospital following her mother's complaint that her son has been vomiting, nauseated and has overall weakness. After series of tests, the nurse notes the laboratory results: potassium: 2.9 mEq. Which primary acid-base imbalance is this boy at risk for if medical intervention is not carried out? A. Respiratory Acidosis B. Respiratory Alkalosis C. Metabolic Acidosis D. Metabolic Alkalosis

D. Metabolic Alkalosis

The home health nurse cares for an alert and oriented older adult patient with a history of dehydration. Which instructions should the nurse give to this patient related to fluid intake? a. "Increase fluids if your mouth feels dry. b. "More fluids are needed if you feel thirsty." c. "Drink more fluids in the late evening hours." d. "If you feel lethargic or confused, you need more to drink."

a. "Increase fluids if your mouth feels dry.

IV potassium chloride (KCl) 60 mEq is prescribed for treatment of a patient with severe hypokalemia. Which action should the nurse take? a. Administer the KCl as a rapid IV bolus. b. Infuse the KCl at a rate of 10 mEq/hour. c. Only give the KCl through a central venous line. d. Discontinue cardiac monitoring during the infusion.

b. Infuse the KCl at a rate of 10 mEq/hour.