[A surgical case of left coronary artery-left ventricular fistula]
Insights
Surgical closure of a rare left coronary artery-left ventricular fistula effectively treated chest pain and improved septal movement in a young male. The procedure ensured minimal impact on coronary artery blood flow, leading to a successful outcome.
Area of Science:
- Cardiovascular Surgery
- Interventional Cardiology
- Congenital Heart Disease
Background:
- Left coronary artery-left ventricular fistulas are exceedingly rare cardiac malformations.
- This case report focuses on a 14-year-old male presenting with recurrent chest pain attributed to such a fistula.
Observation:
- The fistula involved the left anterior descending coronary artery and was diagnosed via coronary arteriography.
- The patient experienced recurrent chest pain, prompting surgical intervention.
Findings:
- Surgical ligation of the fistula using cardiopulmonary bypass, chemical arrest, and hypothermia was performed.
- Post-ligation, blood flow in the left anterior descending artery decreased significantly but remained adequate (100 ml/min).
- The patient showed diminished chest pain and improved left ventricular septal motion post-surgery, with a minor residual flow noted in the circumflex artery.
Implications:
- Effective surgical closure of coronary artery fistulas is crucial for symptom relief and improved cardiac function.
- Maintaining adequate distal coronary artery perfusion during fistula repair is paramount.
- Cardiopulmonary bypass is essential for achieving secure and complete fistula closure.
Abstract:
Left ventricular fistulas arising from the left coronary artery are rare, and only 3 cases have been reported Japan. Surgical closure of a left coronary artery-left ventricular fistula in a 14-year old male was reported. The fistula was identified by coronary arteriography after the patient had been admitted to hospital complaining of recurrent chest pain. Ligation of the fistula involving the left anterior descending coronary artery was performed with cardiopulmonary bypass, chemical arrest and hypothermia. The blood flow through the LAD decreased from 370 ml/min to 100 ml/min after the fistula was ligated, and there was uneventful postoperative recovery. Furthermore chest pain of the patient was shown to diminish and movement of the left ventricular septum was improved, compared with the preoperative cineangiography. However, trivial residual flow fo the circumflex coronary artery to the left ventricle remained on postoperative coronary arteriography. The principal aim of the procedure for surgical correction should be effective closure of the fistula without compromising the distal blood supply of the coronary artery involved, cardiopulmonary bypass is considered necessary to appropriate closure of the fistula.
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