title: Transient dynamic subaortic stenosis in premature neonates after patent ductus arteriosus ligation.
abstract: We describe 2 premature infants with PDA that did not respond to medical therapy and required surgical ligation. Both infants developed transient dynamic subaortic obstruction that resolved without specific therapy. This may have occurred due to sudden changes in the left ventricular volume.
authors.affiliation: Division of Neonatology, The University of Maryland, Baltimore, MD, USA.
authors.forename: Madhavi
authors.initials: M
authors.lastname: Sangem
authors.forename: Mubadda A
authors.initials: MA
authors.lastname: Salim
authors.forename: Jon C
authors.initials: JC
authors.lastname: Love
authors.forename: A
authors.initials: A
authors.lastname: Okogbule-Wonodi
authors.forename: Marcelo G
authors.initials: MG
authors.lastname: Cardarelli
mesh_terms: D001020:Aortic Stenosis, Subvalvular / Q000000981:diagnostic imaging / Q000209:etiology*; D004200:Diseases in Twins / Q000000981:diagnostic imaging / Q000209:etiology*; D004374:Ductus Arteriosus, Patent / Q000601:surgery*; D015150:Echocardiography, Doppler; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007234:Infant, Premature; D007235:Infant, Premature, Diseases / Q000601:surgery*; D008026:Ligation; D013997:Time Factors