Gynaecology & Obstetrics Abnormal labor 9fc06bec Best tocolytic in a cardiac patient is A Atosbian B Isoxsuprine C Nifedipine D MgSO4 High-Yield Explanation Atosiban is oxytocin antagonist and best tocolytic in cardiac patients. B agonists and Calcium channel blockers are contraindicated in hea disease complicated pregnancies.