Highest maternal moality is associated with:

Clarke's Classification for Risk of Maternal Moality Caused by Various Hea Diseases Cardiac Disorder Moality (%) Group - 1 - minimal risk Atrial septal defect Ventricular septal defect Patent ductus aeriosus Pulmonic or tricuspid disease Fallot tetralogy, corrected Bioprosthetic Valve Mitral stenosis, NYHA classes 1 and 2 0-1 Group 2 - moderate risk Mitral stenosis, NYHA classes III and IV Aoic stenosis Aoic coarctation without valvular involvement Fallot tetralogy, uncorrected Previous myocardial infarction Marfan syndrome, normal aoa Mitral stenosis with atrial fibrillation Aificial valve 5-15 Group 3 - Major risk Pulmonary hypeension (Primary and secondary) Aoic coarctation with valvular involvement Marfan syndrome with aoic involvement 25-50