Acute Kidney Injury (NCLEX) Classification Quiz

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

Pre-renal AKI

Renal (intrinsic) AKI

Post-renal AKI

Functional AKI

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

Increased

Decreased

Fluctuating

Normal

3. 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

4. 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

5. 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

6. 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

7. 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

8. 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

9. 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

10. 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

11. 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

12. 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

13. 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

14. 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

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

Acute tubular necrosis

Rhabdomyolysis

Volume depletion from diuretics

Interstitial nephritis

16. 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

17. 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

18. 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

19. 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

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

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

2.

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

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

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

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

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

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

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

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

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

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

11. 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?

12. 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?

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

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

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

16. 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?

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

18. 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?

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