Adult Renal

The nurse is caring for a hospitalized client who has renal failure. Which of the following nursing diagnoses are most appropriate for this client? Select all that apply. A. Excess Fluid Volume B. Imbalanced Nutrition; Less than Body Requirements C. Activity Intolerance D. Impaired Gas Exchange E. Pain.

A, B, C. Appropriate nursing diagnoses for clients with chronic renal failure include excess fluid volume related to fluid and sodium retention; imbalanced nutrition, less than body requirements related to anorexia, nausea, and vomiting; and activity intolerance related to fatigue. The nursing diagnoses of impaired gas exchange and pain are not commonly related to renal failure.

What is the primary disadvantage of using peritoneal dialysis for long term management of chronic renal failure? A. The danger of hemorrhage is high. B. It cannot correct severe imbalances. C. It is a time consuming method of treatment. D. The risk of contacting hepatitis is high.

C. The disadvantages of peritoneal dialysis in long-term management of renal failure is that is requires large blocks of time. The risk of hemorrhage or hepatitis is not high with PD. PD is effective in maintaining a client's fluid and electrolyte balance.

You're developing a nursing care plan for a patient in the diuresis stage of AKI. What nursing diagnosis would you include in the care plan? A. Excess fluid volume B. Risk for electrolyte imbalance C. Urinary retention D. Acute pain

The answer is B. During the diuresis stage of AKI, the patient will be losing an excessive amount of urine (3-6 Liters/day) and is at risk for fluid volume deficient and electrolyte imbalance. The nurse must monitor the patient's electrolyte levels, especially potassium (hypokalemia).

True or False: All patients with acute renal injury will progress through the oliguric stage of AKI but not all patients will progress through the diuresis stage.

The answer is FALSE. Some patients will skip the oliguric stage of AKI and progress to the diuresis stage.

Which of the following clients is at greatest risk for developing acute renal failure? A. A dialysis client who gets influenza B. A teenager who has an appendectomy C. A pregnant woman who has a fractured femur D. A client with diabetes who has a heart catherization

4. Clients with diabetes are prone to renal insufficiency and renal failure. The contrast used for heart catherization must be eliminated by the kidneys, which further stresses them and may produce acute renal failure. A teenager who has an appendectomy and a pregnant woman with a fractured femur isn't at increased risk for renal failure. A dialysis client already has end-stage renal disease and wouldn't develop acute renal failure.

The client being hemodialyzed suddenly becomes short of breath and complains of chest pain. The client is tachycardic, pale, and anxious. The nurse suspects air embolism. The nurse should: A. Continue the dialysis at a slower rate after checking the lines for air B. Discontinue dialysis and notify the physician C. Monitor vital signs every 15 minutes for the next hour D. Bolus the client with 500 ml of normal saline to break up the air embolism.

B. If the client experiences air embolus during hemodialysis, the nurse should terminate dialysis immediately, notify the physician, and administer oxygen as needed

The nurse has completed client teaching with the hemodialysis client about self-monitoring between hemodialysis treatments. The nurse determines that the client best understands the information given if the client states to record the daily: A. Pulse and respiratory rate B. Intake, output, and weight C. BUN and creatinine levels D. Activity log

B. The client on hemodialysis should monitor fluid status between hemodialysis treatments by recording intake and output and measuring weight daily. Ideally, the hemodialysis client should not gain more than 0.5 kg of weight per day.

A client with chronic renal failure has asked to be evaluated for a home continuous ambulatory peritoneal dialysis (CAPD) program. The nurse should explain that the major advantage of this approach is that it: A. Is relatively low in cost B. Allows the client to be more independent C. Is faster and more efficient than standard peritoneal dialysis D. Has fewer potential complications than standard peritoneal dialysis

B. The major benefit of CAPD is that it frees the client from daily dependence on dialysis centers, home health care personnel, and machines for life-sustaining treatment. The independence is a valuable outcome for some people. CAPD is costly and must be done daily. Side effects and complications are similar to those of standard peritoneal dialysis.

Clients on continuous ambulatory peritoneal dialysis (CAPD) must empty their peritoneal cavity and replace the dialysate every __________ hours. A. 6-8 B. 4-6 C. 24 D. 48

B. This has to be done several times throughout the day

The client with chronic renal failure who is scheduled for hemodialysis this morning is due to receive a daily dose of enalapril (Vasotec). The nurse should plan to administer this medication: A. Just before dialysis B. During dialysis C. On return from dialysis D. The day after dialysis

C. Antihypertensive medications such as enalapril are given to the client following hemodialysis. This prevents the client from becoming hypotensive during dialysis and also from having the medication removed from the bloodstream by dialysis. No rationale exists for waiting a full day to resume the medication. This would lead to ineffective control of the blood pressure.

The client asks whether her diet would change on CAPD. Which of the following would be the nurse's best response? A. "Diet restrictions are more rigid with CAPD because standard peritoneal dialysis is a more effective technique." B. "Diet restrictions are the same for both CAPD and standard peritoneal dialysis." C. "Diet restrictions with CAPD are fewer than with standard peritoneal dialysis because dialysis is constant." D. "Diet restrictions with CAPD are fewer than with standard peritoneal dialysis because CAPD works more quickly."

C. Dietary restrictions with CAPD are fewer than those with standard peritoneal dialysis because dialysis is constant, not intermittent. The constant slow diffusion of CAPD helps prevent accumulation of toxins and allows for a more liberal diet. CAPD does not work more quickly, but more consistently. Both types of peritoneal dialysis are effective.

The client with acute renal failure has a serum potassium level of 5.8 mEq/L. The nurse would plan which of the following as a priority action? A. Allow an extra 500 ml of fluid intake to dilute the electrolyte concentration. B. Encourage increased vegetables in the diet C. Place the client on a cardiac monitor D. Check the sodium level

C. The client with hyperkalemia is at risk for developing cardiac dysrhythmias and cardiac arrest. Because of this the client should be placed on a cardiac monitor. Fluid intake is not increased because it contributes to fluid overload and would not affect the serum potassium level significantly. Vegetables are a natural source of potassium in the diet, and their use would not be increased. The nurse may also assess the sodium level because sodium is another electrolyte commonly measured with the potassium level. However, this is not a priority action at this time.

A client is undergoing peritoneal dialysis. The dialysate dwell time is completed, and the dwell clamp is opened to allow the dialysate to drain. The nurse notes that the drainage has stopped and only 500 ml has drained; the amount the dialysate instilled was 1,500 ml. Which of the following interventions would be done first? A. Change the client's position. B. Call the physician. C. Check the catheter for kinks or obstruction. D. Clamp the catheter and instill more dialysate at the next exchange time.

C. The first intervention should be to check for kinks and obstructions because that could be preventing drainage. After checking for kinks, have the client change position to promote drainage. Don't give the next scheduled exchange until the dialysate is drained because abdominal distention will occur, unless the output is within parameters set by the physician. If unable to get more output despite checking for kinks and changing the client's position, the nurse should then call the physician to determine the proper intervention.

A client in acute renal failure is a candidate for continuous renal placement therapy (CRRT). The most common indication for use of CRRT is A. Azotemia B. Hyperkalemia C. Fluid overload D. Pericarditis

C. fluid overload

Which of the following factors causes the nausea associated with renal failure? A. Oliguria B. Gastric ulcers C. Electrolyte imbalances D. Accumulation of waste products

D. Although clients with renal failure can develop stress ulcers, the nausea is usually related to the poisons of metabolic wastes that accumulate when the kidneys are unable to eliminate them. The client has electrolyte imbalances and oliguria, but these don't directly cause nausea.

You're assessing morning lab values on a female patient who is recovering from a myocardial infraction. Which lab value below requires you to notify the physician? A. Potassium level 4.2 mEq/L B. Creatinine clearance 35 mL/min C. BUN 20 mg/dL D. Blood pH 7.40

The answer is B. A normal creatinine clearance level in a female should be 85-125 mL/min (95-140 mL/min males). A creatinine clearance level indicates the amount of blood the kidneys can make per minute that contain no amounts of creatinine in it. Remember creatinine is a waste product of muscle breakdown. Therefore, the kidneys should be able to remove excessive amounts of it from the bloodstream. A patient who has experienced a myocardial infraction is at risk for pre-renal acute injury due to decreased cardiac output to the kidneys from a damaged heart muscle (the heart isn't able to pump as efficiently because of ischemia). All the other labs values are normal.

A patient with AKI has a urinary output of 350 mL/day. In addition, morning labs showed an increased BUN and creatinine level along with potassium level of 6 mEq/L. What type of diet ordered by the physician is most appropriate for this patient? A. Low-sodium, high-protein, and low-potassium B. High-protein, low-potassium, and low-sodium C. Low-protein, low-potassium, and low-sodium D. High-protein and high-potassium

The answer is C. The patient with AKI, especially in the oliguric stage of AKI, should eat a low-protein, low-potassium, and low-sodium diet. This is because the kidneys are unable to filter out waste products, excessive water, and maintain electrolyte balance. The patient will have a buildup of waste (BUN and creatinine). Remember these waste products are the byproduct of protein (urea) and muscle breakdown (creatinine). So the patient should avoid high-protein foods. In addition, the patient is at risk for hyperkalemia and fluid overload (needs low-potassium and sodium foods).

A patient with acute renal injury has a GFR (glomerular filtration rate) of 40 mL/min. Which signs and symptoms below may this patient present with? Select all that apply: A. Hypervolemia B. Hypokalemia C. Increased BUN level D. Decreased Creatinine level

The answers are A and C. The glomerular filtration rate indicates how well the glomerulus is filtering the blood. A normal GFR tends to be 90 mL/min or higher. A GFR of 40 mL/min indicates that the kidney's ability to filter the blood is decreased. Therefore, the kidneys will be unable to remove waste and excessive water from the blood...hence hypervolemia and an increased BUN level will present in this patient. The patient will experience HYPERkalemia (not hypo) because the kidneys are unable to remove potassium from the blood. In addition, an INCREASED creatinine level (not decreased) will present because the kidneys cannot remove excessive waste products, such as creatinine.

A 36 year old male patient is diagnosed with acute kidney injury. The patient is voiding 4 L/day of urine. What complication can arise based on the stage of AKI this patient is in? Select all that apply: A. Water intoxication B. Hypotension C. Low urine specific gravity D. Hypokalemia E. Normal GFR

The answers are: B, C, and D. This patient is in the DIURESIS stage of AKI. The nephrons are now starting to filter out waste but cannot concentrate the urine. There is now a high amount of urea in the filtrate (because the nephrons can filter the urea out of the blood) and this causes osmotic diuresis. Urinary output will be excessive (3 to 6 L/day). Therefore, the patient is at risk for hypotension, diluted urine (low urine specific gravity), and hypokalemia (waste potassium in the urine). The patient is not at risk for water intoxication and will not have a normal GFR until the recovery stage.

The nurse is monitoring a client receiving peritoneal dialysis and nurse notes that a client's outflow is less than the inflow. Select actions that the nurse should take. A. Place the client in good body alignment B. Check the level of the drainage bag C. Contact the physician D. Check the peritoneal dialysis system for kinks E. Reposition the client to his or her side.

A, B, D, E. If outflow drainage is inadequate, the nurse attempts to stimulate outflow by changing the client's position. Turning the client to the other side or making sure that the client is in good body alignment may assist with outflow drainage. The drainage bag needs to be lower than the client's abdomen to enhance gravity drainage. The connecting tubing and the peritoneal dialysis system is also checked for kinks or twisting and the clamps on the system are checked to ensure that they are open. There is no reason to contact the physician.

A client receiving hemodialysis treatment arrives at the hospital with a blood pressure of 200/100, a heart rate of 110, and a respiratory rate of 36. Oxygen saturation on room air is 89%. He complains of shortness of breath, and +2 pedal edema is noted. His last hemodialysis treatment was yesterday. Which of the following interventions should be done first? A. Administer oxygen B. Elevate the foot of the bed C. Restrict the client's fluids D. Prepare the client for hemodialysis.

A. Airway and oxygenation are always the first priority. Because the client is complaining of shortness of breath and his oxygen saturation is only 89%, the nurse needs to try to increase his levels by administering oxygen. The client is in pulmonary edema from fluid overload and will need to be dialyzed and have his fluids restricted, but the first interventions should be aimed at the immediate treatment of hypoxia. The foot of the bed may be elevated to reduce edema, but this isn't the priority.

Which of the following is the most significant sign of peritoneal infection? A. Cloudy dialysate fluid B. Swelling in the legs C. Poor drainage of the dialysate fluid D. Redness at the catheter insertion site

A. Cloudy drainage indicates bacterial activity in the peritoneum. Other signs and symptoms of infection are fever, hyperactive bowel sounds, and abdominal pain. Swollen legs may be indicative of congestive heart failure. Poor drainage of dialysate fluid is probably the result of a kinked catheter. Redness at the insertion site indicates local infection, not peritonitis. However, a local infection that is left untreated can progress to the peritoneum.

The nurse assesses the client who has renal failure and notes the following: crackles in the lung bases, elevated blood pressure, and weight gain of 2 pounds in one day. Based on these data, which of the following nursing diagnoses is appropriate? A. Excess fluid volume related to the kidney's inability to maintain fluid balance. B. Increased cardiac output related to fluid overload. C. Ineffective tissue perfusion related to interrupted arterial blood flow. D. Ineffective therapeutic Regimen Management related to lack of knowledge about therapy.

A. Crackles in the lungs, weight gain, and elevated blood pressure are indicators of excess fluid volume, a common complication in chronic renal failure. The client's fluid status should be monitored carefully for imbalances on an ongoing basis.

The nurse is performing an assessment on a client who has returned from the dialysis unit following hemodialysis. The client is complaining of a headache and nausea and is extremely restless. Which of the following is the most appropriate nursing action? A. Notify the physician B. Monitor the client C. Elevate the head of the bed D. Medicate the client for nausea

A. Disequilibrium syndrome may be due to the rapid decrease in BUN levels during dialysis. These changes can cause cerebral edema that leads to increased intracranial pressure. The client is exhibiting early signs of disequilibrium syndrome and appropriate treatments with anticonvulsant medications and barbituates may be necessary to prevent a life-threatening situation. The physician must be notified.

Which of these drugs is nephrotoxic? A. NSAIDs B. ACE inhibitors C. Diuretics D. Sodium bicarbonate/ Potassium bicarbonate

A. NSAIDS

Dialysis allows for the exchange of particles across a semipermeable membrane by which of the following actions? A. Osmosis and diffusion B. Passage of fluid toward a solution with a lower solute concentration C. Allowing the passage of blood cells and protein molecules through it. D. Passage of solute particles toward a solution with a higher concentration.

A. Osmosis allows for the removal of fluid from the blood by allowing it to pass through the semipermeable membrane to an area of high concentrate (dialysate), and diffusion allows for passage of particles (electrolytes, urea, and creatinine) from an area of higher concentration to an area of lower concentration. Fluid passes to an area with a higher solute concentration. The pores of a semipermeable membrane are small, thus preventing the flow of blood cells and protein molecules through it.

The dialysis solution is warmed before use in peritoneal dialysis primarily to: A. Encourage the removal of serum urea. B. Force potassium back into the cells. C. Add extra warmth into the body. D. Promote abdominal muscle relaxation.

A. The main reason for warming the peritoneal dialysis solution is that the warm solution helps dilate peritoneal vessels, which increases urea clearance. Warmed dialyzing solution also contributes to client comfort by preventing chilly sensations, but this is a secondary reason for warming the solution. The warmed solution does not force potassium into the cells or promote abdominal muscle relaxation.

The nurse is instructing a client with diabetes mellitus about peritoneal dialysis. The nurse tells the client that it is important to maintain the dwell time for the dialysis at the prescribed time because of the risk of: A. Infection B. Hyperglycemia C. Fluid overload D. Disequilibrium syndrome

B. An extended dwell time increases the risk of hyperglycemia in the client with diabetes mellitus as a result of absorption of glucose from the dialysate and electrolyte changes. Diabetic clients may require extra insulin when receiving peritoneal dialysis.

Which of the following nursing interventions should be included in the client's care plan during dialysis therapy? A. Limit the client's visitors B. Monitor the client's blood pressure C. Pad the side rails of the bed D. Keep the client NPO.

B. Because hypotension is a complication of peritoneal dialysis, the nurse records intake and output, monitors VS, and observes the client's behavior. The nurse also encourages visiting and other diversional activities. A client on PD does not need to be placed in bed with padded side rails or kept NPO.

During the client's dialysis, the nurse observes that the solution draining from the abdomen is consistently blood tinged. The client has a permanent peritoneal catheter in place. Which interpretation of this observation would be correct? A. Bleeding is expected with a permanent peritoneal catheter B. Bleeding indicates abdominal blood vessel damage C. Bleeding can indicate kidney damage. D. Bleeding is caused by too-rapid infusion of the dialysate.

B. Because the client has a permanent catheter in place, blood tinged drainage should not occur. Persistent blood tinged drainage could indicate damage to the abdominal vessels, and the physician should be notified. The bleeding is originating in the peritoneal cavity, not the kidneys. Too rapid infusion of the dialysate can cause pain.

The client with chronic renal failure has an indwelling catheter for peritoneal dialysis in the abdomen. The client spills water on the catheter dressing while bathing. The nurse should immediately: A. Reinforce the dressing B. Change the dressing C. Flush the peritoneal dialysis catheter D. Scrub the catheter with providone-iodine

B. Clients with peritoneal dialysis catheters are at high risk for infection. A dressing that is wet is a conduit for bacteria for bacteria to reach the catheter insertion site. The nurse assures that the dressing is kept dry at all times. Reinforcing the dressing is not a safe practice to prevent infection in this circumstance. Flushing the catheter is not indicated. Scrubbing the catheter with povidone-iodine is done at the time of connection or disconnecting of peritoneal dialysis.

A patient rapidly progressing toward ESRD asks about the possibility of a kidney transplant. In responding to the patient, the nurse knows that contraindications to kidney transplantation include A. Hepatitis C infection B. Extensive vascular disease C. Refractory hypertension D. Coronary artery disease

B. Extensive Vascular Disease

Signs and symptoms of acute kidney rejection that the nurse should teach the patient to observe for include A. Tachycardia and headache B. Fever and painful transplant site C. Recurrent urinary tract infections and oral yeast infections D. Sever hypotension and weight loss

B. Fever and painful transplant site

The nurse is preparing to care for a client receiving peritoneal dialysis. Which of the following would be included in the nursing plan of care to prevent the major complication associated with peritoneal dialysis? A. Monitor the clients level of consciousness B. Maintain strict aseptic technique C. Add heparin to the dialysate solution D. Change the catheter site dressing daily

B. The major complication of peritoneal dialysis is peritonitis. Strict aseptic technique is required in caring for the client receiving this treatment. Although option 4 may assist in preventing infection, this option relates to an external site.

A nurse is assessing the patency of an arteriovenous fistula in the left arm of a client who is receiving hemodialysis for the treatment of renal failure. Which finding indicates that the fistula is patent? A. Absence of bruit on auscultation of the fistula. B. Palpation of a thrill over the fistula C. Presence of a radial pulse in the left wrist D. Capillary refill time less than 3 seconds in the nail beds of the fingers on the left hand.

B. The nurse assesses the patency of the fistula by palpating for the presence of a thrill or auscultating for a bruit. The presence of a thrill and bruit indicate patency of the fistula. Although the presence of a radial pulse in the left wrist and capillary refill time less than 3 seconds in the nail beds of the fingers on the left hand are normal findings, they do not assess fistula patency.

A client newly diagnosed with renal failure is receiving peritoneal dialysis. During the infusion of the dialysate the client complains of abdominal pain. Which action by the nurse is most appropriate? A. Slow the infusion B. Decrease the amount to be infused C. Explain that the pain will subside after the first few exchanges D. Stop the dialysis

C. Pain during the inflow of dialysate is common during the first few exchanges because of peritoneal irritation; however, the pain usually disappears after 1 to 2 weeks of treatment. The infusion amount should not be decreased, and the infusion should not be slowed or stopped.

The client with an arteriovenous shunt in place for hemodialysis is at risk for bleeding. The nurse would do which of the following as a priority action to prevent this complication from occurring? A. Check the results of the PT time as they are ordered. B. Observe the site once per shift C. Check the shunt for the presence of a bruit and thrill D. Ensure that small clamps are attached to the AV shunt dressing.

D. An AV shunt is a less common form of access site but carries a risk for bleeding when it is used because two ends of an external cannula are tunneled subcutaneously into an artery and a vein, and the ends of the cannula are joined. If accidental connection occurs, the client could lose blood rapidly. For this reason, small clamps are attached to the dressing that covers the insertion site to use if needed. The shunt site should be assessed at least every four hours.

A client received hemodialysis treatments three times per week through an arteriovenous (AV) fistula in the left arm. Which of the following interventions is included in this client's plan of care? A. Keep the AV fistula site dry. B. Keep the AV fistula wrapped in gauze. C. take the blood pressure in the left arm D. Assess the AV fistula for a bruit and thrill

D. Assessment of the AV fistula for bruit and thrill is important because, if not present, it indicates a non-functioning fistula. No blood pressures or venipunctures should be taken in the arm with the AV fistula. When not being dialyzed, the AV fistula site may get wet. Immediately after a dialysis treatment, the access site is covered with adhesive bandages.

The client newly diagnosed with chronic renal failure recently has begun hemodialysis. Knowing that the client is at risk for disequilibrium syndrome, the nurse assesses the client during dialysis for: A. Hypertension, tachycardia, and fever B. Hypotension, bradycardia, and hypothermia C. Restlessness, irritability, and generalized weakness D. Headache, deteriorating level of consciousness, and twitching.

D. Disequilibrium syndrome is characterized by headache, mental confusion, decreasing level of consciousness, nausea, and vomiting, twitching, and possible seizure activity. Disequilibrium syndrome is caused by rapid removal of solutes from the body during hemodialysis. At the same time, the blood-brain barrier interferes with the efficient removal of wastes from brain tissue. As a result, water goes into cerebral cells because of the osmotic gradient, causing brain swelling and onset of symptoms. The syndrome most often occurs in clients who are new to dialysis and is prevented by dialyzing for shorter times or at reduced blood flow rates.

A client with renal failure has completed a hemodialysis treatment. The nurse would use which of the following standard indicators to evaluate the client's status after dialysis? A. Potassium level and weight B. BUN and creatinine levels C. VS and BUN D. VS and weight.

D. Following dialysis, the client's vital signs are monitored to determine whether the client is remaining hemodynamically stable. Weight is measured and compared with the client's predialysis weight to determine effectiveness of fluid extraction. Laboratory studies are done as per protocol but are not necessarily done after the hemodialysis treatment has ended.

In a client in renal failure, which assessment finding may indicate hypocalcemia? A. Headache B. Serum calcium level of 5 mEq/L C. Increased blood coagulation D. Diarrhea

D. In renal failure, calcium absorption from the intestine declines, leading to increased smooth muscle contractions, causing diarrhea. CNS changes in renal failure rarely include headache. A serum calcium level of 5 mEq/L indicates hypercalcemia. As renal failure progresses, bleeding tendencies increase.

The nurse is reviewing a list of components contained in the peritoneal dialysis solution with the client. The client asks the nurse about the purpose of the glucose contained in the solution. The nurse bases the response knowing that the glucose: A. Prevents excess glucose from being removed from the client. B. Decreases risk of peritonitis. C. Prevents disequilibrium syndrome D. Increases osmotic pressure to produce ultrafiltration.

D. Increasing the glucose concentration makes the solution increasingly more hypertonic. The more hypertonic the solution, the greater the osmotic pressure for ultrafiltration and thus the greater amount of fluid removed from the client during an exchange.

The client with chronic renal failure returns to the nursing unit following a hemodialysis treatment. On assessment the nurse notes that the client's temperature is 100.2. Which of the following is the most appropriate nursing action? A. Encourage fluids B. Notify the physician C. Monitor the site of the shunt for infection D. Continue to monitor vital signs

D. The client may have an elevated temperature following dialysis because the dialysis machine warms the blood slightly. If the temperature is elevated excessively and remains elevated, sepsis would be suspected and a blood sample would be obtained as prescribed for culture and sensitivity purposes.

Which patient below with acute kidney injury is in the oliguric stage of AKI: A. A 56 year old male who has metabolic acidosis, decreased GFR, increased BUN/Creatinine, hyperkalemia, edema, and urinary output 350 mL/day. B. A 45 year old female with metabolic alkalosis, hypokalemia, normal GFR, increased BUN/creatinine, edema, and urinary output 600 mL/day. C. A 39 year old male with metabolic acidosis, hyperkalemia, improving GFR, resolving edema, and urinary output 4 L/day. D. A 78 year old female with respiratory acidosis, increased GFR, decreased BUN/creatinine, hypokalemia, and urinary output 550 mL/day.

The answer is A. During the oliguric stage of AKI the patient will have a urinary output of 400 mL/day or LESS. This is due to a decreased GRF (glomerular filtration rate), which will lead to increased amounts of waste in the blood (increased BUN/Creatinine), metabolic acidosis (decreased excretion of hydrogen ions), hyperkalemia, hypervolemia (edema/hypertension), and urinary output of <400 mL/day.

1. ______________ is solely filtered from the bloodstream via the glomerulus and is NOT reabsorbed back into the bloodstream but is excreted through the urine. A. Urea B. Creatinine C. Potassium D. Magnesium

The answer is B. Creatinine is a waste product from muscle breakdown and is removed from the bloodstream via the glomerulus of the nephron. It is the only substance that is solely filtered out of the blood but NOT reabsorbed back into the system. It is excreted out through the urine. This is why a creatinine clearance test is used as an indicator for determining renal function and for calculating the glomerular filtration rate.

A 55 year old male patient is admitted with a massive GI bleed. The patient is at risk for what type of acute kidney injury? A. Post-renal B. Intra-renal C. Pre-renal D. Intrinsic renal

The answer is C. Pre-renal injury is due to decreased perfusion to the kidneys secondary to a cause (massive GI bleeding...patient is losing blood volume). This leads to a major decrease in kidney function because the kidneys are deprived of nutrients to function and the amount of blood it can filter. Pre-renal injury can eventually lead to intrarenal damage where the nephrons become damaged.

A patient with acute kidney injury has the following labs: GFR 92 mL/min, BUN 17 mg/dL, potassium 4.9 mEq/L, and creatinine 1 mg/dL. The patient's 24 hour urinary output is 1.75 Liters. Based on these findings, what stage of AKI is this patient in? A. Initiation B. Diuresis C. Oliguric D. Recovery

The answer is D. This patient is in the recovery stage of AKI. The patient's labs and urinary output indicate the renal function has returned to normal. Remember the recovery stages starts when the GFR (glomerular filtration rate) has returned to normal (normal GFR 90 mL/min or higher), which will allow waste levels and electrolyte levels to be maintained.

Select all the patients below that are at risk for acute intra-renal injury? A. A 45 year old male with a renal calculus. B. A 65 year old male with benign prostatic hyperplasia. C. A 25 year old female receiving chemotherapy. D. A 36 year old female with renal artery stenosis. E. A 6 year old male with acute glomerulonephritis. F. An 87 year old male who is taking an aminoglycoside medication for an infection.

The answers are: C, E, and F. These patients are at risk for an intra-renal injury, which is where there is damage to the nephrons of kidney. The patients in options A and B are at risk for POST-RENAL injury because there is an obstruction that can cause back flow of urine into the kidney, which can lead to decreased function of the kidney. The patient in option D is at risk for PRE-RENAL injury because there is an issue with perfusion to the kidney.