This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
[{'content': 'Eisenmenger syndrome is characterized by all except – \nSelect and explain. \nA. Return of left ventricle & right ventricle to normal size, B. Pulmonary veins not distended, C. Pruning of peripheral pulmonary arteries, D. Dilatation of central pulmonary arteries', 'role': 'user'}, {'content': "Answer: A \nExplanation: Eisenmenger syndrome is associated with severe pulmonary arterial hypertension and right ventricular hypertrophy.\nThe right ventricular size will certainly not return to normal once eisenminger syndrome develops.\nChest X-ray in Eisenmenger syndrome\n\nDilated and prominent central arteries.\nRapid tapering (pruning) of the peripheral pulmonary vasculature.\nThe hilar (central) area suggests pulmonary plethora whereas the peripheral lung fields suggest pulmonary oligemia.\n\nClinical manifestations of Eisenmenger syndrome\n\nSymptoms --> Cyanosis (Differential cynosis in PDA), fatigue, effort intolerance and dyspnea.\nPhysical examination\n\n\nCyanosis and clubbing\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0 ❑ Parasternal impulse (more in ASD)\n\n\nPalpable P2\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0 ❑ Wide and fixed splitting of S2 in ASD\n\n\nPulmonary regurgitation murmur.\xa0\xa0\xa0 ❑ Normal splitting of S2 in PDA\nEjection systolic murmur (pulmonic).\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0 o Single S, or paradoxical splitting in VSD ECG\n\n\nRight ventricular hypertrophy with right axis deviation.\n'P' pulmonale.", 'role': 'assistant'}]