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An unusual tethering of the bridging leaflets in atrioventricular septal defect producing a communication from left atrium to right ventricle

Published online by Cambridge University Press:  19 August 2008

C Delgado ,
O onnin  and
F Barturen
C Delgado*
Affiliation:
Internal Medicine Service of Cardiology, Policlinica Miramar, Palma de Mallorca, Spain
O onnin
Affiliation:
Surgery, Service of Cardiology, Policlinica Miramar, Palma de Mallorca, Spain
F Barturen
Affiliation:
Internal Medicine Service of Cardiology, Policlinica Miramar, Palma de Mallorca, Spain
*
Dr Carlos Delgado, Servicio de Cardiologia, Camino de la Vileta, 30, Policlinica Miramar, E-07011 Palma De Mallorca (Baleares), Spain. Tel: 971–450212; Fax: 971–456668
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Abstract

We describe a 39-year-old woman who was diagnosed as having an unusual atrioventricular septal defect with a communication from left atrium to right ventricle. A common atrioventricular junction, with partially separated right and left atrioventricular orifices, was found at transoesophageal ultrasonic examination. Both bridging leaflets were attached to the underside of the atrial septum, which was grossly malaligned relative to the ventricular septum. The shunt was exclusively from left atrium to right ventricle because of the overriding of the left atrioventricular valve, with the left component of the inferior bridging leaflet firmly fused to the ventricular septal crest.

Keywords

Atrioventricular septal defectcommon atrioventricular junctionleft atrium to right ventricular communicationtransoesophageal echocardiography
Type
Brief Reports
Information
Cardiology in the Young , Volume 9 , Issue 1 , January 1999 , pp. 84 - 87
Copyright
Copyright © Cambridge University Press 1999

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