coronary arteriovenous fistula

coronary arteriovenous fistula

an unusual congenital abnormality characterized by a direct communication between a coronary artery, usually the right, and the right atrium or ventricle, the coronary sinus, or the vena cava. There may be a left-to-right shunt of small magnitude causing no symptoms, but a large shunt may result in growth failure, limited exercise tolerance, dyspnea, and anginal pain. Possible complications of a large shunt are bacterial endocarditis, rupture of an aneurysmal fistula, thrombus formation that causes occlusion or distal embolization, and in rare cases pulmonary hypertension and congestive heart failure. A loud continuous murmur heard at the lower or midsternal border of the heart suggests a coronary arteriovenous fistula; the diagnosis may be confirmed by coronary arteriography or aortography. Closure of the fistulous tract is a safe surgical procedure with excellent long-term results.
References in periodicals archive ?
Coronary arteriovenous fistula is a rare anomaly through which the involved coronary artery flow drains into a cardiac chamber, great vessel, or other structures, bypassing the myocardial capillary network.
Congenital coronary arteriovenous fistula (CAF) is a direct communication between coronary artery and lumen of any cardiac chamber, coronary sinus, the pulmonary artery, or the superior vena cava.
Aydogan (10) performed successfully transcatheter coronary arteriovenous fistula occlusion in 5 children, two with detachable balloon.
Congenital circumflex coronary arteriovenous fistula with aneurysmal termination in the pulmonary.
Transcatheter closure of a large coronary arteriovenous fistula using the new Amplatzer Duct Occuder.
Coronary arteriovenous fistulas considered to be termination anomalies (5).
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