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  • Title: Management of the left atrioventricular valve in the repair of complete atrioventricular septal defects.
    Author: Capouya ER, Laks H, Drinkwater DC, Pearl JM, Milgalter E.
    Journal: J Thorac Cardiovasc Surg; 1992 Jul; 104(1):196-201; discussion 201-3. PubMed ID: 1614204.
    Abstract:
    Left atrioventricular valve regurgitation in atrioventricular canal defects is usually due to malalignment of the edges of the cleft or to annular dilatation. Intraoperative assessment and correction of left atrioventricular valve incompetence is critical for successful outcome in the surgical management of complete atrioventricular canal defects. Although some have elected not to suture the cleft in the setting of minimal incompetence, we have found that this often results in significant left atrioventricular valve insufficiency, necessitating reoperation. From January 1982 through December 1990, 105 patients with complete atrioventricular canal underwent definitive repair. Repair was performed with a single pericardial patch technique in 86 patients (82%). Intraoperative assessment of left atrioventricular valve competence was performed in all cases. Ninety-six patients (91%) required suturing of the cleft and 63 (60%) required annuloplasty to establish satisfactory competence of the left atrioventricular valve. The overall early mortality rate was 10.5% (11/105 patients). From 1986 to 1990, the early mortality rate decreased to 7.7% (6/78 patients). In a mean follow-up of 39 months (range 1 to 106 months), late survival was 96% (90/94 operative or early survivors). Reoperation was performed on eleven (11.5%) patients; six (6.3%) for failure of the atrioventricular valve repair, three for patch dehiscence, and two for residual ventricular septal defects. These data demonstrate that routine approximation of the cleft and aggressive use of left atrioventricular valve annuloplasty is safe and results in an excellent outcome with a low incidence of reoperation for failure of left atrioventricular valve repair.
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