<prompt> Therapeutic uses of prostaglandin E1 include all of the following; exceptMedical termination of pregnancyImpotencePrimary pulmonary hypertensionMaintenance of patent ductus arteriosus  <response>: PGI2 analogs like epoprostenol and treprostinil are used for treatment of pulmonary hypertension.PGE1 analogs are used for first trimester abortion misoprostol, impotence alprostadil and maintenance of the patency of ductus arteriosus alprostadil. 