Outcomes and Prognostic Factors for Adult Patients With Congenital Heart Disease Undergoing Primary or Reoperative Systemic Atrioventricular Valve Surgery

Abstract

Background:

Adults with congenital heart disease (ACHD) undergoing systemic atrioventricular valve (SAVV) surgery are a complex, understudied population. We assessed midterm outcomes and prognostic factors in ACHD undergoing SAVV surgery.

Methods:

We performed retrospective evaluation of ACHD undergoing SAVV surgery from January 2005 to February 2016: 14 (33%) patients with congenital mitral valve stenosis/regurgitation, 15 (35%) with atrioventricular septal defect (AVSD), and 14 (33%) with congenitally corrected transposition of the great arteries (ccTGA) with systemic tricuspid valve regurgitation. Adverse events were defined as mortality, reoperation on SAVV, and late more-than-moderate (> moderate) SAVV regurgitation. Statistical analysis was performed using Fisher’s exact test and one-way analysis of variance as well as univariate and multivariate risk factor analysis.

Results:

Fifteen (35%) patients had preoperative systemic ventricular dysfunction, including 13 patients with ccTGA (93%, P < .001). Twenty-three (54%) patients underwent valve repair, 20 (47%) patients underwent replacement, and 20 (47%) patients underwent an associated procedure. Replacement was higher in patients with ccTGA (86%) than the other groups (P < 0.01). Thirty-seven patients (91% of survivors) were free of significant SAVV regurgitation at last follow-up, with patients with AVSD having greater regurgitation grades compared to the other groups (P < 0.01). In-hospital mortality, late mortality, late > moderate SAVV regurgitation, and SAVV reoperation rates were 5% (n = 2), 2% (n = 1), 9% (n = 3), and 7% (n = 3), respectively. On multivariate analysis, predischarge SAVV regurgitation grade was the only significant predictor of adverse events (odds ratio = 8.2, 95% confidence interval: 1.1-63.8, P = .045).

Conclusion:

Overall outcomes in this challenging population are good. The single factor associated with adverse events was predischarge SAVV regurgitation grade.

Keywords

adult congenital heart disease atrioventricular septal defect (AVSD)mitral valve disease mitral regurgitation (includes all etiologies)tricuspid valve

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