A child squats after exertion and has cyanotic spells. Which condition is most likely?
Answer and explanation
Correct answer: A. Tetralogy of Fallot
- Step 1: Squatting raises systemic resistance and reduces the right-to-left shunt.
Answer
Tetralogy of Fallot.
Why not the others: Ventricular septal defect, Patent ductus arteriosus and Atrial septal defect do not fit this picture as well.
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