Hemodynamic features of congenital aortic valve stenosis with patent ductus arteriosus in children.
BACKGROUND
The aim of the present paper was to investigate the hemodynamic features of congenital aortic valvar stenosis (AS) associated with patent ductus arteriosus (PDA), and to develop information to guide management of AS with coexistent PDA.


METHODS
Hemodynamic measurements were performed in eight of 11 patients with AS before and following transcatheter closure of a PDA. Doppler cardiac ultrasound and chest X-rays were performed during follow up.


RESULTS
In each of the 11 patients, aortic valve gradient was markedly reduced following transcatheter ductal closure. In only one of them was balloon aortic valvuloplasty necessary.


CONCLUSIONS
Aortic valve gradient was markedly overestimated before closure of PDA. The significance of this finding has focused on selecting appropriate management so that a PDA is not overlooked when intervention for AS is performed.
Department of Cardiology, Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.
Chunhong
C
Xie
Chengsen
C
Xia
Zhengyan
Z
Zhao
Yinbao
Y
Zhou
D000293:Adolescent; D001024:Aortic Valve Stenosis / Q000150:complications / Q000503:physiopathology* / Q000628:therapy; D002404:Catheterization; D002648:Child; D002675:Child, Preschool; D004374:Ductus Arteriosus, Patent / Q000150:complications / Q000503:physiopathology* / Q000628:therapy; D015150:Echocardiography, Doppler; D006439:Hemodynamics; D006801:Humans; D007223:Infant; D014694:Ventricular Outflow Obstruction / Q000209:etiology; D017725:Ventricular Pressure