This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other hea diseases in children, Subject name: Pediatrics
[{'content': 'Coarctation of aoa is most commonly associated with? \nSelect and explain. \nA. ASD, B. PDA, C. Bicuspid aoic valve, D. VSD', 'role': 'user'}, {'content': 'Answer: C \nExplanation: COARCTATION OF AOA: - Sharp indentation involving anterior, lateral & posterior wall of aoa. - Medial wall - spared - MC associated with bicuspid aoic valve Clinical presentation: - Severe coarctation - Hea failure in neonate with B/L feeble or impalpable femoral pulses - Hypeension - Milder disease: intermittent claudication of lower limbs CXR: Figure of 3 & Notching of inferior margin of 3rd - 9th ribs usually seen >3 years age CONTRAST ESOPHAGOGRAM AND BARIUM SWALLOW: E sign TREATMENT: - Balloon angioplasty - Anti hypeensives for hypeension', 'role': 'assistant'}]