HCR 240 Case Study 30 - Acute
Renal Failure
Course
HCR 240 Case Study 30 - Acute Renal Failure
1. What is Acute Renal Failure (ARF)?
Answer:
Acute Renal Failure (ARF), now commonly called Acute Kidney Injury (AKI), is a sudden
decline in kidney function that occurs over hours or days, resulting in the accumulation of waste
products, electrolyte imbalances, and fluid retention.
2. A patient develops severe dehydration after several days of vomiting and diarrhea.
Which type of ARF is most likely?
Answer:
Prerenal ARF.
Rationale:
Severe fluid loss decreases blood flow to the kidneys, reducing filtration and causing kidney
dysfunction.
3. What are the three major categories of Acute Renal Failure?
Answer:
1. Prerenal
2. Intrarenal (Intrinsic)
3. Postrenal
Rationale:
These categories are based on the location of the problem affecting kidney function.
4. A patient with enlarged prostate experiences urinary retention and elevated creatinine
levels. What is the likely cause of ARF?
Answer:
Postrenal ARF.
, Rationale:
An enlarged prostate can obstruct urine flow, causing urine to back up into the kidneys and
impair kidney function.
5. Which laboratory value is commonly elevated in Acute Renal Failure?
Answer:
Serum creatinine.
Rationale:
Damaged kidneys cannot effectively remove creatinine from the bloodstream.
6. A patient with AKI has a potassium level of 6.5 mEq/L. Why is this finding concerning?
Answer:
It can cause life-threatening cardiac arrhythmias.
Rationale:
Hyperkalemia is a serious complication of kidney failure because potassium accumulates when
excretion is impaired.
7. What symptom would the nurse expect in a patient with fluid overload caused by ARF?
Answer:
Peripheral edema.
Rationale:
The kidneys cannot adequately remove excess fluid, leading to swelling and fluid retention.
8. A patient receives a high dose of nephrotoxic antibiotics and subsequently develops AKI.
Which type of ARF is this?
Answer:
Intrarenal ARF.
Rationale:
Nephrotoxic drugs directly damage kidney tissues, particularly the renal tubules.
9. What diagnostic test is commonly used to assess kidney function in ARF?
Renal Failure
Course
HCR 240 Case Study 30 - Acute Renal Failure
1. What is Acute Renal Failure (ARF)?
Answer:
Acute Renal Failure (ARF), now commonly called Acute Kidney Injury (AKI), is a sudden
decline in kidney function that occurs over hours or days, resulting in the accumulation of waste
products, electrolyte imbalances, and fluid retention.
2. A patient develops severe dehydration after several days of vomiting and diarrhea.
Which type of ARF is most likely?
Answer:
Prerenal ARF.
Rationale:
Severe fluid loss decreases blood flow to the kidneys, reducing filtration and causing kidney
dysfunction.
3. What are the three major categories of Acute Renal Failure?
Answer:
1. Prerenal
2. Intrarenal (Intrinsic)
3. Postrenal
Rationale:
These categories are based on the location of the problem affecting kidney function.
4. A patient with enlarged prostate experiences urinary retention and elevated creatinine
levels. What is the likely cause of ARF?
Answer:
Postrenal ARF.
, Rationale:
An enlarged prostate can obstruct urine flow, causing urine to back up into the kidneys and
impair kidney function.
5. Which laboratory value is commonly elevated in Acute Renal Failure?
Answer:
Serum creatinine.
Rationale:
Damaged kidneys cannot effectively remove creatinine from the bloodstream.
6. A patient with AKI has a potassium level of 6.5 mEq/L. Why is this finding concerning?
Answer:
It can cause life-threatening cardiac arrhythmias.
Rationale:
Hyperkalemia is a serious complication of kidney failure because potassium accumulates when
excretion is impaired.
7. What symptom would the nurse expect in a patient with fluid overload caused by ARF?
Answer:
Peripheral edema.
Rationale:
The kidneys cannot adequately remove excess fluid, leading to swelling and fluid retention.
8. A patient receives a high dose of nephrotoxic antibiotics and subsequently develops AKI.
Which type of ARF is this?
Answer:
Intrarenal ARF.
Rationale:
Nephrotoxic drugs directly damage kidney tissues, particularly the renal tubules.
9. What diagnostic test is commonly used to assess kidney function in ARF?
