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The surgical management of congenital coronary artery fistula
1Department of Thoracic and Cardiovascular Surgery, Sahlgrenska Hospital, University of Gothenburg, Sweden.
Insights
Surgical closure of congenital coronary artery fistula (CAF) is a low-risk procedure with good long-term outcomes. This study analyzed surgical treatments, indications, and results for CAF, a rare cardiovascular anomaly.
Area of Science:
- Cardiovascular Surgery
- Congenital Heart Disease
- Medical Research
Background:
- Congenital coronary artery fistula (CAF) is an extremely rare cardiovascular anomaly, with fewer than 400 cases reported globally.
- This study focuses on the surgical management of CAF, a condition requiring specialized treatment approaches.
Purpose of the Study:
- To analyze surgical treatment experiences for congenital coronary artery fistula (CAF).
- To evaluate surgical indications, techniques, and long-term outcomes in patients with CAF.
- To highlight critical aspects of myocardial protection and fistula closure in CAF surgery.
Main Methods:
- A retrospective review of 20,000 cardiovascular surgical cases between 1978 and 1993 identified 14 patients with CAF.
- Diagnosis was confirmed using coronary angiography (CAG) and echocardiography.
- Surgical management and long-term follow-up data were assessed for all eligible patients.
Main Results:
- Surgery was performed on 13 patients, with 11 requiring cardiopulmonary bypass (CPB).
- Treatments included aneurysm reduction plasty, coronary artery bypass grafting (CABG), and closure of associated defects (VSD, PDA).
- Mean follow-up was 7.2 years; all symptomatic patients improved NYHA functional class, with a 1% annual mortality rate.
Conclusions:
- Surgical closure of CAF is a low-risk procedure with favorable long-term results.
- Emphasis is placed on myocardial protection, preventing residual fistulas, and refining surgical techniques for CAF.
- Specialized surgical techniques are described for optimal management of congenital coronary artery fistulas.
Background:
Congenital coronary artery fistula (CAF) is a very rare cardiovascular anomaly and only 400 cases have been reported. The purpose of this study was to analyse the experience of surgical treatments in CAF and evaluate the surgical indications, techniques and long-term results.
Methods:
A retrospective study reviewing 20,000 cardiovascular surgical cases from 1978 to 1993 was carried out, from which 14 patients with CAF were identified and diagnosis was confirmed by both coronary angiography (CAG) and echocardiography. Twelve patients had heart-related symptoms. CAG revealed that fistulous channels arose from the right coronary artery (RCA) in seven patients, and from the left coronary artery (LCA) in six patients. One patient had multiple fistulae, from both RCA and LCA. The surgical managements and late follow-up were assessed.
Results:
Surgery was performed on 13 patients; one had died before surgery. Cardiopulmonary bypass (CPB) was performed in 11 patients. The presence of coronary aneurysm was treated by reduction plasty of the aneurysm (four patients). Other procedures were coronary artery bypass grafting (CABG; four patients), ventricular septal defect (VSD) and patent ductus arteriosus (PDA) closure (one patient), and one patient had mitral valve replacement. The mean follow-up time was 7.2 years and all symptomatic patients improved their New York Heart Association (NYHA) functional class (average 1.2 classes). Although there were no surgical deaths in our group, one late death (6 months after surgery) was caused by acute myocardial infarction; this resulted in an annual mortality rate of 1%.
Conclusions:
Surgical closure of CAF can be recommended because it is a low-risk procedure and leads to good long-term results. The problems with myocardial protection, residual fistula prevention and surgical techniques must be emphasized. For these purposes, special surgical techniques that have been introduced are described.