This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Gynaecology & Obstetrics
[{'content': 'Ventricular function improves with pregnancy in which of the following condition? \nSelect and explain. \nA. Mitral stenosis, B. Mitral insufficiency, C. Aoic stenosis, D. Pulmonary stenosis', 'role': 'user'}, {'content': "Answer: B \nExplanation: Major cardiac valve disordersType Pregnancy outcomeMitral stenosisHea failure from fluid overload, tachycardia Mitral insufficiencyVentricular function improves with afterload decreaseAoic stenosisModerate stenosis is tolerated; Severe is life-threatening with decreased preload eg: obstetrical hemorrhage or regional analgesiaAoic insufficiencyVentricular function improves with afterload decreasePulmonary stenosisMild stenosis well tolerated; Severe stenosis is associated with right hea failure and atrial arrhythmias(Ref: William's Obstetrics; 25th edition)", 'role': 'assistant'}]