Fs. Brito et al., Single coronary arteries: Two cases with distinct and previously undescribed angiographic patterns, J INVAS CAR, 11(7), 1999, pp. 430-434
Single coronary artery is a rare congenital anomaly, sometimes associated w
ith myocardial ischemia. We present the clinical and angiographic features
of two symptomatic patients with documented myocardial ischemia and with di
stinct and previously undescribed patterns of single right coronary arterie
s. These cases are new variants of the types Ri and R-II-A, in which the mo
st probable mechanisms of ischemia are the insufficient blood supply, due t
o the long trajectories of the single arteries and the presence of underdev
eloped vessels. Also, our second case presented with a fistulae from the LC
X to the left ventricle, which is another determinant of myocardial ischemi
a.