2. Cardiac disease as per Clark's Maternal Mortality Associated with Pregnancy: Group 1 (mortality less than 1%) atrial septal defect, ventricular septal defect, patent ductus arteriosus, pulmonic or tricuspid valve disease, corrected tetrology of Fallot, bioprosthetic valve, mitral stenosis with NYHA class I and II functional status Group 2 (mortality 5-15%) mitral stenosis with NYHA class III and IV functional status, aortic stenosis, coarctation of aorta without valvular involvement, uncorrected tetrology of Fallot, previous myocardial infarction, Marfan syndrome with normal aorta, mitral stenosis with atrial fibrillation, artificial valve Group 3 (mortality 25-50%) pulmonary hypertension, coarctation of aorta with valvular involvement, Marfan syndrome with aortic involvement (7)