CONGENITAL CORONARY ARTERY FISTULAS

ANZ J. Surg. 2004; 74: 350–355

CONGENITAL CORONARY ARTERY FISTULAS: CLINICAL
CONSIDERATIONS AND SURGICAL TREATMENT
GOU-JIENGHONG,* CHIH-YUANLIN,* CHUNG-YILEE,* SHIN-HURNLOH,† HOU-SHENGYANG,*KUANG-YILIU,* YI-TINGTSAI*AND CHIEN-SUNGTSAI*
*Division of Cardiovascular Surgery, Department of Surgery, and † Department of Pharmacology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, China

Background:
Coronary artery fistulas are uncommon abnormalities that can cause significant cardiac morbidity. Indications for operation vary, particularly, for asymptomatic patients. Early surgical correction is indicated because of the high incidence of late symptoms and complications.

Methods:
From January 1981 to December 2001, all 15 patients who underwent surgical management of congenital coronary artery fistulas at the Tri-Service General Hospital, Taipei, Taiwan, China were included in the present retrospective study.

Results:
Twelve patients were symptomatic at the time of the diagnosis. Coronary artery fistulas involved the right coronary artery in five patients, left coronary artery in nine, and both the right and the left coronary arteries in one. Coronary artery fistula drained into the right ventricle in seven patients, right atrium in three, pulmonary artery in two, left ventricle in one, left atrium in two, and
coronary venous sinus in one. The value of pulmonary blood flow/systemic blood flow ranged from 0.98 to 2.1. Six patients had associated cardiac anomalies. All patients received surgical correction. Nine patients received cardiopulmonary bypass during operation. There was zero operative mortality and operative morbidity was low. All patients had a stable condition and were asymptomatic during a mean postoperative follow-up of 13.3 years.

Conclusions:
Early surgical treatment for coronary artery fistulas is safe and effective. The risk of operative correction appears to be considerably less than the potential for development of serious and potentially fatal complications, even in asymptomatic patients.

Key words: coronary artery fistula.
Abbreviations : Qp/Qs, pulmonary blood flow/systemic blood flow; TEE, transesophageal echocardiography.

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