Ductus ArteriosusTocolysisDuctus Arteriosus, PatentPatents as TopicTruncus Arteriosus, PersistentFetusUltrasonography, PrenatalGestational AgePregnancyInfant, NewbornBlood Flow VelocityInfant, PrematureSeptal Occluder DeviceIndomethacinInfant, Premature, DiseasesTruncus ArteriosusCardiac CatheterizationPulmonary ArteryIbuprofenHeart Murmurs