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Ann Thorac Surg 1986;42:573-577
© 1986 The Society of Thoracic Surgeons

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Articles

Coronary Arteries in Complete Transposition: The Significance of the Sinus Node Artery

From the Department of Paediatrics, Cardiothoracic Institute, and the Department of Surgery, Brompton Hospital, London, England

Accepted for publication January 31, 1986.

^* Address reprint requests to Dr. Ho, Department of Paediatrics, Cardiothoracic Institute, Fulham Rd, London SW3 6HP, England

Hearts from 29 children with complete transposition were examined postmortem to analyze the pattern of the coronary arteries and the origin of the sinus node artery. Four patterns of origin and distribution of the coronary arteries were found. In all, the coronary arteries arose from one or both of the facing sinuses, which were termed sinus 1 and sinus 2. The patterns were (1) left coronary artery from sinus 1 and right coronary artery from sinus 2; (2) anterior descending artery from sinus 1 and right coronary artery and circumflex artery from sinus 2; (3) left coronary and right coronary from sinus 2; and (4) circumflex artery from sinus 2 and right coronary artery from sinus 1. This study highlights the patterns of the coronary arteries in complete transposition and categorizes the variability using a simple classification. It also emphasizes the surgical significance of variations in distribution of the sinus node artery.

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