[Possibilities of echo- and Doppler echocardiography in the diagnosis of congenital coronary fistulas].

A complex ultrasound examination makes it possible to tentatively differentiate a coronary fistula and recommend to perform coronary angiography. The tentative diagnosis of coronary fistula can be made on the basis of a set of the following sings: location of aneurysmally enlarged ostium and proximal segment of a coronary artery along with an intact contralateral one; recording of abnormal turbulent systolic and diastolic blood flow in the aneurysmally enlarged coronary artery. The location of coronary distal segments and the site of the coronaryfistular shunt are a complicated problem that awaits further exploration.