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Pediatrics · Cardiology
Sample itemWhat can a central cyanotic congenital heart lesion cause?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
C. Low oxygen saturation
Right-to-left shunting or reduced pulmonary oxygenation in cyanotic congenital heart disease lowers arterial oxygen saturation and may cause central cyanosis.
Option by option
A. Increased urine output only
Urine output alone does not define cyanotic heart disease.
B. Painless jaundice
Jaundice is not the defining consequence of a cyanotic lesion.
C. Low oxygen saturation (correct)
Correct: cyanotic lesions can lower arterial oxygen saturation.
D. High hearing threshold
Hearing threshold is unrelated to cardiac oxygenation.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.