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Ann Thorac Surg 2001;71:582-586
© 2001 The Society of Thoracic Surgeons

Original article: cardiovascular

Tricuspid valve supra-annular implantation in adult patients with Ebstein’s anomaly

Masashi Tanaka, MDa, Toshihiro Ohata, MDa, Sachito Fukuda, MDa, Ikutaro Kigawa, MDa, Yoichi Yamashita, MDa, Yasuhiko Wanibuchi, MDa

a Division of Cardiovascular Surgery, Mitsui Memorial Hospital, Tokyo, Japan

Accepted for publication June 5, 2000.

Address reprint requests to Dr Tanaka, Division of Cardiovascular Surgery, Mitsui Memorial Hospital, 1 Kanda Izumi-cho, Chiyoda-ku, Tokyo 101-0024, Japan
e-mail: masashi{at}omiya.jichi.ac.jp

Background. Tricuspid valve supra-annular implantation (TVSI) has been performed for adult patients with Ebstein’s anomaly at our hospital for several decades. TVSI is characterized by reliable reduction of tricuspid annulus size without affecting the conduction system; by prevention of residual tricuspid regurgitation (RTR) through preservation of the native tricuspid valve; and by implantation of the bioprosthesis at a supra-annular site.

Methods. Ten adult patients with Ebstein’s anomaly underwent TVSI. The right ventricular diameter and residual tricuspid regurgitation were evaluated by echocardiography preoperatively, at discharge, 1 year after the operation, and over the long term (12.4 ± 5.5 years). Actuarial survival rate, actuarial freedom from structural valve deterioration rate, and postoperative occurrence of arrhythmia were also evaluated.

Results. The actuarial survival rate at 19 years was 76 ± 15%. Tricuspid regurgitation disappeared in 8 patients just after operation. Right ventricular diameter was significantly smaller at discharge than preoperatively (63 ± 11 vs 37 ± 9, p < 0.01), and there were no significant differences between values at discharge and at follow-up. The actuarial freedom from structural valve deterioration rate and the reoperation rate were both 100%. There were no fatal complications related to arrhythmia or thromboembolism.

Conclusions. TVSI is useful for adult patients with Ebstein’s anomaly. The absence of complications related to fatal arrhythmia and thromboembolism, good durability of the bioprosthesis, and a simple operative procedure are merits of this therapy.




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