Systemic atrioventricular conduit for extracardiac bypass of hypoplastic systemic atrioventricular valve

A. Amodeo, R. Di Donato, A. Corno, E. Mazzera, S. Giannico, S. Nava, C. Marcelletti

Research output: Contribution to journalArticlepeer-review


The management of severe congenital mitral stenosis in infants and children is still controversial. We describe our experience with the use of a systemic atrioventricular (SAV) extracardiac conduit to bypass a hypoplastic systemic atrioventricular valve. An SAV extracardiac conduit has been used in six patients (left atrium - left ventricle in five, right atrium - right ventricle in one). One hospital death occurred due to mediastinitis and there were two late deaths, one due to progressive subaortic stenosis and one sudden, possibly due to arrhythmia. Postoperative cardiac catheterization performed in five patients showed reduction of the transmitral gradient from a mean of 16 mmHg to a mean of 5 mmHg. Calcification of the bioprosthetic valve occurred in two patients 3 1 2 years and 2 years respectively after the operation; one died from concomitant subaortic stenosis and one underwent conduit replacement. Although its long-term efficacy is limited, the SAV conduit seems the most reliable surgical option for infants and children with hypoplastic systemic atrioventricular valves unsuited to conventional surgery.

Original languageEnglish
Pages (from-to)601-604
Number of pages4
JournalEuropean Journal of Cardio-thoracic Surgery
Issue number11
Publication statusPublished - 1990


  • Conduit
  • Hypoplastic mitral valve

ASJC Scopus subject areas

  • Surgery
  • Cardiology and Cardiovascular Medicine


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