Pediatric CCRN Exam Pediatric CCRN Renal 2

Question 1

When calculating percent fluid overload in a PICU patient, which formula is correct?

Accepted Answer

(Current weight − admission weight) / admission weight × 100

Answer

(Current weight − admission weight) / current weight × 100

Answer

(Fluid in − fluid out) / body surface area × 100

Answer

(Current weight − dry weight) / ideal body weight × 100

Question 2

A 10-year-old with rhabdomyolysis is at high risk for AKI. Which intervention is MOST important to prevent renal tubular damage?

Accepted Answer

Aggressive IV fluid resuscitation targeting urine output ≥ 3 mL/kg/hr

Answer

Administering nephrotoxic antibiotics prophylactically

Answer

Restricting fluid to prevent fluid overload

Answer

Early initiation of peritoneal dialysis

Question 3

Which electrolyte profile is the hallmark of tumor lysis syndrome in pediatric oncology patients?

Accepted Answer

Hypocalcemia, hyperphosphatemia, hyperkalemia, and hyperuricemia

Answer

Hypercalcemia, hypophosphatemia, hypokalemia, and hypouricemia

Answer

Hypernatremia, hypochloremia, and hypomagnesemia

Answer

Hypocalcemia, hypokalemia, and hyponatremia

Question 4

Which laboratory finding would BEST suggest a pre-renal cause (rather than intrinsic renal) of AKI in a child?

Accepted Answer

FeNa < 1%, urine sodium < 20 mEq/L

Answer

FeNa > 2%, urine sodium > 40 mEq/L

Answer

BUN:creatinine ratio < 10

Answer

Urine specific gravity < 1.010

Question 5

A pediatric patient develops sudden headache, nausea, vomiting, and altered mental status during hemodialysis. What complication is most likely?

Accepted Answer

Dialysis disequilibrium syndrome

Answer

Air embolism

Answer

Dialysis-associated hypercalcemia

Answer

Dialyzer membrane reaction

Question 6

Which acid-base disturbance progression is most commonly observed as chronic kidney disease (CKD) advances in children?

Accepted Answer

Non-anion gap metabolic acidosis progressing to elevated anion gap metabolic acidosis

Answer

Respiratory alkalosis progressing to metabolic alkalosis

Answer

Metabolic alkalosis throughout all stages

Answer

Respiratory acidosis progressing to metabolic acidosis

Question 7

Which mode of renal replacement therapy provides the GREATEST hemodynamic stability for critically ill pediatric patients?

Accepted Answer

Continuous venovenous hemofiltration (CVVH)

Answer

Intermittent hemodialysis (IHD)

Answer

Sustained low-efficiency dialysis (SLED)

Answer

Peritoneal dialysis