Acute Kidney Injury (NCLEX) Classification Quiz

1. Which condition is a common cause of pre-renal AKI in hospitalized patients?

Acute tubular necrosis

Rhabdomyolysis

Volume depletion from diuretics

Interstitial nephritis

2. Which clinical scenario is most consistent with post-renal acute kidney injury?

Dehydration with low urine output

Sepsis with muddy brown urine

Prostate cancer with anuria and hydronephrosis

Rhabdomyolysis with myoglobinuria

3. A patient on vancomycin develops acute kidney injury with rising creatinine, granular casts, and high urinary sodium. What AKI type?

Pre-renal AKI

Renal (intrinsic) AKI

Post-renal AKI

Prerenal azotemia

4. A 55-year-old with diabetic nephropathy has proteinuria, hematuria, and rising creatinine over 3 days. RBC casts are present. What is the primary AKI classification?

Pre-renal AKI

Renal AKI

Post-renal AKI

Prerenal azotemia

5. A patient with benign prostatic hyperplasia develops acute kidney injury. His post-void residual is 400 mL. What type of AKI is this?

Pre-renal AKI

Renal AKI

Post-renal AKI

Glomerular AKI

6. In acute kidney injury, prerenal azotemia rapidly reverses with fluid resuscitation. This is characteristic of which AKI type?

Pre-renal AKI

Renal AKI

Post-renal AKI

Chronic kidney disease

7. A 45-year-old with lupus nephritis develops acute kidney injury with RBC casts, WBC casts, and proteinuria. What is the AKI classification?

Pre-renal AKI

Renal (intrinsic) AKI

Post-renal AKI

Functional AKI

8. Acute tubular necrosis is classified as which type of AKI?

Pre-renal AKI

Renal (intrinsic) AKI

Post-renal AKI

Functional AKI

9. A patient presents with flank pain, hematuria, and acute kidney injury. Imaging shows bilateral ureteral stones. Classify the AKI.

Pre-renal AKI

Renal AKI

Post-renal AKI

Glomerulonephritis

10. In pre-renal AKI, the kidneys respond to decreased perfusion by increasing reabsorption of sodium and water. This results in ______ urine osmolality.

Decreased

Increased

Normal

Variable

11. A patient with contrast-induced nephropathy develops acute kidney injury 48 hours post-angiography. This is classified as which AKI type?

Pre-renal AKI

Renal (intrinsic) AKI

Post-renal AKI

Prerenal azotemia

12. Which finding would suggest post-renal rather than pre-renal AKI?

Elevated BUN/Cr ratio of 30:1

Urine output

Bladder distension on ultrasound

Fractional excretion of sodium

13. In pre-renal AKI, the kidney's glomerular filtration rate decreases due to ______ renal perfusion pressure.

Increased

Decreased

Fluctuating

Normal

14. A 68-year-old male presents with acute kidney injury. His urinary sodium is 10 mEq/L and BUN/Cr ratio is 25:1. What type of AKI is most likely?

Pre-renal AKI

Renal AKI

Post-renal AKI

Chronic kidney disease

15. Which urinary finding best differentiates pre-renal from renal AKI?

Presence of WBC casts

Fractional excretion of sodium (FENa)

Specific gravity

PH less than 5

16. A patient in septic shock has decreased urine output and rising creatinine. Urinary osmolality is 600 mOsm/kg and urine sodium is 8 mEq/L. Which AKI type is this?

Pre-renal AKI

Renal AKI

Post-renal AKI

Acute glomerulonephritis

17. Which laboratory finding is characteristic of intrinsic renal (renal) AKI?

Urinary sodium >40 mEq/L and muddy brown casts

Urinary sodium

Urinary sodium >40 mEq/L and hyaline casts

Urinary sodium

18. A 72-year-old on NSAIDs and ACE inhibitor develops acute kidney injury with BUN 56 mg/dL and Cr 3.2 mg/dL. Most likely AKI type?

Pre-renal AKI

Renal AKI

Post-renal AKI

Chronic kidney disease stage 4

19. Post-renal AKI typically results from obstruction. Which finding would NOT suggest post-renal cause?

Hydronephrosis on imaging

Elevated BUN/Cr ratio of 20:1

Bladder outlet obstruction

Bilateral ureteral stones

AKI Quiz: Pre-Renal, Renal or Post-Renal?

1. Which condition is a common cause of pre-renal AKI in hospitalized patients?

2.

What first name or nickname would you like us to use?

2. Which clinical scenario is most consistent with post-renal acute kidney injury?

3. A patient on vancomycin develops acute kidney injury with rising creatinine, granular casts, and high urinary sodium. What AKI type?

4. A 55-year-old with diabetic nephropathy has proteinuria, hematuria, and rising creatinine over 3 days. RBC casts are present. What is the primary AKI classification?

5. A patient with benign prostatic hyperplasia develops acute kidney injury. His post-void residual is 400 mL. What type of AKI is this?

6. In acute kidney injury, prerenal azotemia rapidly reverses with fluid resuscitation. This is characteristic of which AKI type?

7. A 45-year-old with lupus nephritis develops acute kidney injury with RBC casts, WBC casts, and proteinuria. What is the AKI classification?

8. Acute tubular necrosis is classified as which type of AKI?

9. A patient presents with flank pain, hematuria, and acute kidney injury. Imaging shows bilateral ureteral stones. Classify the AKI.

10. In pre-renal AKI, the kidneys respond to decreased perfusion by increasing reabsorption of sodium and water. This results in ______ urine osmolality.

11. A patient with contrast-induced nephropathy develops acute kidney injury 48 hours post-angiography. This is classified as which AKI type?

12. Which finding would suggest post-renal rather than pre-renal AKI?

13. In pre-renal AKI, the kidney's glomerular filtration rate decreases due to ______ renal perfusion pressure.

14. A 68-year-old male presents with acute kidney injury. His urinary sodium is 10 mEq/L and BUN/Cr ratio is 25:1. What type of AKI is most likely?

15. Which urinary finding best differentiates pre-renal from renal AKI?

16. A patient in septic shock has decreased urine output and rising creatinine. Urinary osmolality is 600 mOsm/kg and urine sodium is 8 mEq/L. Which AKI type is this?

17. Which laboratory finding is characteristic of intrinsic renal (renal) AKI?

18. A 72-year-old on NSAIDs and ACE inhibitor develops acute kidney injury with BUN 56 mg/dL and Cr 3.2 mg/dL. Most likely AKI type?

19. Post-renal AKI typically results from obstruction. Which finding would NOT suggest post-renal cause?