<prompt> A newborn baby develops cyanosis on day three of life. On auscultation, there is a systolic murmur. Echocardiography reveals a cyanotic hea disease in the baby. Which one of the following drugs can be administered to prolong the life of the baby pending intervention -IndomethacinIbuprofenProstaglandin ElPropanolol  <response>: Ans. is c i.e., Prostaglandin E1 