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Surgical Treatment of Partial Atrioventricular Canal

Martin H. McMullan, MD; Dwight C. McGoon, MD; Robert B. Wallace, MD; Gordon K. Danielson, MD; William H. Weidman, MD
Arch Surg. 1973;107(5):705-710. doi:10.1001/archsurg.1973.01350230061012.
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Analysis of early results of partial atrioventricular (AV) canal deformity correction in 101 patients and of late results of these plus 131 patients treated earlier has focused on factors affecting operative risk. Age at operation and heart size had possible relevance and the degree of disability held borderline significance. Operative mortality was 5.6%; estimated late survival of the remaining patients at 5, 10, and 15 years was 96.5%, 95.3%, and 93.8%. Preoperative cardiac enlargement was the only significant factor related to the late result.

Mitral valvular deformity, which figures importantly in the causes of early and late failures, is difficult to evaluate because of the lack of quantitative methods of assessment. Accurate repair of the mitral valve cleft is required; determination of residual severe mitral regurgitation after repair is desirable to permit mitral replacement at the time.


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The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
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