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 complex is common in adult in – \nSelect and explain. \nA. VSD, B. ASD, C. PDA, D. Cushion defect', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Eisenmenger syndrome \n\nThere are two different terms : -\n\n\nEisenmenger syndrome Refers to patients with a ventricular septal defect in which blood is shunted from right to left as a result of the development of pulmonary vascular resistance. This physiologic abnormality can also occur with ASP, atrioventricular septal defect, PDA or any other communication between aorta and pulmonary artery.\nEisenmenger complex Consists of pulmonary hypertension with a VSI providing the right to left shunt.\n\n\nEisenmenger physiology is defined by an absolute elevation in pulmonary arterial resistance to greater than 12 wood units or by a ratio of pulmonary to systemic vascular resistance of 1.0.\nThe pulmonary hypertension is the result of : -\n\na Early in the course it is due to markdely increased pulmonary blood flow —> Hyperkinetic pulmonary hypertension. This form of pulmonary hypertension decreases with the administration of pulmonary vasodilators or oxygen.\nLi With the development of Eisenmenger syndrome pulmonary hypertension is due to pulmonary vascular obstructive disease, i.e., obstructive changes in the pulmonary vessels. This type of pulmonary hypertension only minimally responsive to pulmonary vasodilators or oxygen.', 'role': 'assistant'}]