JOURNAL ARTICLE
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Repair of septal and posterior tricuspid leaflets in Ebstein's anomaly.

BACKGROUND AND AIM: In Ebstein's anomaly, the septal and posterior tricuspid leaflets are plastered to the endocardium. We postulated that tricuspid valve function could be corrected by restoring mobility of these leaflets. (Feasibility of such repair was explored by anatomical and clinical studies.)

METHODS: Ten heart specimens with Ebstein's anomaly were examined to investigate the size of the tricuspid leaflets. We operated on four patients with Ebstein's anomaly: the plastered septal and posterior leaflets were mobilized from the endocardium, the atrialized right ventricle was longitudinally plicated, and the basal attachment of the mobilized leaflets was sutured (reattached) to the valve annulus.

RESULTS: In heart specimens, approximately 40% of the total surface of the tricuspid leaflets was comprised of the septal and posterior leaflets. Clinically, all patients operated on returned to normal functional status after surgery. The mean cardiothoracic ratio on chest X-rays decreased from 0.70 to 0.55 (after surgery). Echocardiographic tricuspid regurgitation, graded from 0 to 4, decreased from 3.5 to 1.0, and tricuspid annular diameter ratio to the normal value reduced from 1.88 to 0.66. Angiographic right ventricular ejection fraction increased from 0.36 to 0.50, and end-diastolic volume ratio to the normal value decreased from 3.65 to 1.19.

CONCLUSIONS: Repair of the septal and posterior tricuspid leaflets was found to be feasible and effective as tricuspid valvuloplasty for Ebstein's anomaly.

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