One month old baby is referred for failure to thrive. On examination there are features of congestive cardiac failure. Femoral pulses are feeble compared to brachial pulses. The likely diagnosis is: (A) Coarctation of aoa, (B) Patent ductus aeriosus, (C) Congenital aoic stenosis, (D) Congenital aoa-iliac disease
Answer is A. In coarctation of aoa there will be radiofemoral delay. Ghai essential of pediatrics, eighth edition, p.no:432