Overview Pharmacokinetics of Sildenafil in Premature Infants Status: Completed Trial end date: 2016-07-01 Target enrollment: Participant gender: Summary The purpose of this study is to learn more about the safety and dosing of sildenafil in infants. Phase: Phase 1 Details Lead Sponsor: University of North Carolina, Chapel HillCollaborators: Duke UniversityEunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)The Emmes Company, LLCThe EMMES CorporationTreatments: Sildenafil Citrate