Overview Improving Right Ventricular Function in Young Adults Born Preterm Status: Completed Trial end date: 2020-02-24 Target enrollment: Participant gender: Summary The purpose of this research is to evaluate the short-term effects of sildenafil and metoprolol on heart function in young adults born premature. Phase: Phase 2 Details Lead Sponsor: University of Wisconsin, MadisonCollaborator: National Center for Advancing Translational Science (NCATS)Treatments: MetoprololSildenafil Citrate