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Robert L. Hardesty, MD; J. Robert Zuberbuhler, MD; Henry T. Bahnson, MD

Arch Surg. 1975;110(11):1391-1396.

Abstract
• Fifty-nine patients with congenital anomalies of the atrioventricular canal underwent operation and all survivors were followed up.

In 42 patients with partial atrioventricular canal defects, ten had preoperative congestive heart failure. Three, or 7.1%, died of endomyocardial fibroelastosis, high pulmonary vascular resistance, and severe mitral regurgitation. A fourth patient later died of Wolff-Parkinson-White syndrome and fibrillation. Reoperations in five patients were all successful. No patients had persistent atrioventricular blocks, and all patients are asymptomatic. Two of these subjects continue to receive digoxin therapy, and one of them is believed to have substantial mitral insufficiency.

Of the 17 patients who had complete atrioventricular canal defects, 13 had a divided common anterior leaflet attached to the septum by chordae tendineae, and four had undivided and unattached anterior leaflets. Two had previously undergone pulmonary banding, and nine were treated for congestive heart failure. Six died after operation. There were no reoperations. No patient presently has required a pacemaker. Two subjects have persistent cardiomegaly.

(Arch Surg 110:1391-1396, 1975)

Author Affiliations
From the Department of Surgery, School of Medicine, University of Pittsburgh.

Footnotes
Accepted for publication June 27, 1975.

Read before the 23rd scientific meeting of the International Cardiovascular Society, Boston, June 20, 1975.

Reprint requests to University of Pittsburgh, School of Medicine, Department of Surgery, 1088 Scaife Hall, Pittsburgh, PA 15261 (Dr Hardesty).

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