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Anatomic biventricular repair by intraatrial and intraventricular re-routing in patients with left isomerism

Published online by Cambridge University Press:  01 July 2011

Hideki Uemura*
Affiliation:
Department of Cardiovascular Surgery, National Cardiovascular Center, Osaka, Japan.
Toshikatsu Yagihara
Affiliation:
Department of Cardiovascular Surgery, National Cardiovascular Center, Osaka, Japan.
Youichi Kawahira
Affiliation:
Department of Cardiovascular Surgery, National Cardiovascular Center, Osaka, Japan.
Yoshiro Yoshikawa
Affiliation:
Department of Cardiovascular Surgery, National Cardiovascular Center, Osaka, Japan.
*
Correspondence to: Hideki Uemura, MD, Department of Cardiovascular Surgery, National Cardiovascular Center, 5–7–1 Fujishirodai, Suita, Osaka 565–8565, Japan. Tel: 81–6–6833–5012; Fax: 81–6–6872–7486; E-mail: huemura@hsp.ncvc.go.jp

Abstract

Objective: To determine the efficacy of anatomic biventricular repair by a combination of intraatrial and intraventricular re-routing in patients with isomerism of the left atrial appendages. Methods: Anatomic biventricular repair by means of combined intraratrial and intraventricular re-routing was achieved in 5 of the 63 patients with left isomerism in whom we attempted a definitive surgical procedure. The inferior caval vein was interrupted in 3. The Mustard procedure was chosen for intraatrial redirection of blood in 4, and the Senning procedure in the other. Intraventricular re-routing was carried out via a right ventriculotomy in all patients, using an external conduit to reconstruct the morphologically right ventricular outflow tract. Results: One patient died one month after the procedure because of low cardiac output and bronchial bleeding. Obstruction across the superior caval venous channel occurred after the Senning procedure in this particular patient, related to the interrupted inferior caval vein draining via the azygous vein. The other 4 patients are currently doing well. Postoperative catheterization showed excellent cardiac performance, with no obstruction across the venous channels or the ventricular outflow tracts in these 4. No episode of significant archythmia has been noted, all patients having a regular atrial rhythm, although the P wave vector was unusual in each patient. Reoperation has been needed thus far in one patient, 128 months after the initial repair, because of obstruction of the external conduit. Conclusion: With precise recognition of the morphologic features, a combination of intraatrial and intraventricular re-routing can successfully be established in patients with isomeric left atrial appendages, with functional results in the intermediate term being reasonable.

Type
Original Articles
Copyright
Copyright © Cambridge University Press 2001

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