<prompt> Best tocolytic in a cardiac patient is:AtosibanIsoxsuprineNifedipineMgSO4  <response>: Ans. is a, i.e. AtosibanRef. Textbook of Obs.tetrics, Shiela Balakrishnan 1e, p 231Role of Tocolytics in Heart DiseaseMost of the tocolytics are contraindicated in heart diseaseSafest tocolytic is atosiban oxytocin antagonistBeta agonist is contraindicated in cardiac arrthymias, valvular disease and cardiac ischemia because of their sympathomimetic side effects such as tachycardia, palpitation and hypotension.Nifedipine is contraindicated in conduction defect, left ventricular failure due to side effects as tachycardia, hypotension, etc.Tocolytics of choice Overall tocolytic of choice Safest tocolytic agent as it can be used in heart disease patient Most efficacious tocolytic agent Tocolytic preferred in heart disease Nifedipine Atosiban Nifedipine Atosiban 