Pediatric CCRN Exam Pediatric CCRN Renal

Question 1

According to KDIGO criteria, which urine output threshold defines oliguria and indicates acute kidney injury (AKI) in a pediatric patient?

Accepted Answer

< 0.5 mL/kg/hr for 6 hours

Answer

KDIGO criteria define oliguria as urine output < 0.5 mL/kg/hr for 6 or more consecutive hours, which is a diagnostic criterion for AKI staging.

Question 2

A 4-year-old presents with bloody diarrhea, thrombocytopenia, microangiopathic hemolytic anemia, and acute kidney injury. What is the most likely diagnosis?

Accepted Answer

Hemolytic uremic syndrome

Answer

The classic triad of microangiopathic hemolytic anemia, thrombocytopenia, and AKI following bloody diarrhea is the hallmark presentation of hemolytic uremic syndrome (HUS).

Question 3

Which is the FIRST-LINE treatment for life-threatening hyperkalemia (K+ > 6.5 mEq/L with ECG changes) in a pediatric patient?

Accepted Answer

Calcium gluconate IV

Answer

Calcium gluconate is administered first in life-threatening hyperkalemia because it immediately stabilizes the cardiac membrane, reducing the risk of fatal arrhythmias.

Question 4

A 7-year-old with nephrotic syndrome has periorbital edema and a serum albumin of 1.5 g/dL. What is the PRIMARY pathophysiology of edema in nephrotic syndrome?

Accepted Answer

Decreased plasma oncotic pressure

Answer

Massive proteinuria leads to hypoalbuminemia, which reduces plasma oncotic pressure and allows fluid to leak into the interstitial space, causing edema.

Question 5

What is the correct maintenance fluid requirement for a 20 kg child using the Holliday-Segar method?

Accepted Answer

1,500 mL/day

Answer

Using the 100-50-20 rule: 100 mL/kg × 10 kg = 1,000 mL + 50 mL/kg × 10 kg = 500 mL, totaling 1,500 mL/day.

Pediatric CCRN Exam Practice Test

Pediatric CCRN Exam Practice Test

Pediatric CCRN Exam Pediatric CCRN Renal