Transient dynamic subaortic stenosis in premature neonates after patent ductus arteriosus ligation.
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.
Sangem
Madhavi
M
Division of Neonatology, The University of Maryland, Baltimore, MD, USA.
Salim
Mubadda A
MA
Love
Jon C
JC
Okogbule-Wonodi
A
A
Cardarelli
Marcelo G
MG
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