This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Medical Illness Complicating Pregnancy, Subject name: Gynaecology & Obstetrics
MC hea disease associated with pregnancy: 
Select and explain. 
A. Mitral stenosis, B. Mitral regurgitation, C. Patent ductus aeriosus, D. TOF
A: Mitral stenosis
Answer: A: Mitral stenosis 
Explanation: Most common hea disease seen in pregnancy is Rheumatic hea disease and the most common lesion is MITRAL STENOSIS.