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The Annals of Thoracic Surgery, Vol 39, 283-285, Copyright © 1985 by The Society of Thoracic Surgeons
R di Donato, AE Becker, A Nijveld, J Lam, A Bulterijs, C Squitieri and C Marcelletti
The modified Fontan operation, which consists of ventricular exclusion by
obliteration of the right atrioventricular ostium, requires a technique
that provides firm and permanent occlusion while preserving the
atrioventricular node and bundle. Ten patients underwent such an operation.
In 5 of them, closure of the right atrioventricular ostium was achieved by
suturing a patch into the valve leaflets; in the other 5, the ventricle was
excluded by a patch sutured into the right atrial wall above the annulus
fibrosus. None of the patients who underwent this procedure experienced
heart block postoperatively. However, three instances of late patch
dehiscence occurred, each in the group of patients in whom the patch had
been attached to the valve leaflets. We conclude that both patching
techniques are safe as far as the atrioventricular node and bundle are
concerned but that permanent occlusion is better obtained by implanting the
patch into the atrial wall. Therefore, we prefer to use this technique.
ARTICLES
Ventricular exclusion during Fontan operation: an evolving technique
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