Anomalous left coronary artery arising from the pulmonary artery

Anomalous left coronary artery arising from the pulmonary artery. A report on two cases with successful surgical therapy.

“…It is remarkable, however, that the insufficient blood supply rarely causes persisting electrocardiographic signs ofinjury. As the experiences of Nadas et al (1964) and of Kuzman, Yuskis, and Carmichael (1959) demonstrate, ligation of the abnormal coronary artery should be done with caution because, during the stage in which the area involved still is supplied from the pulmonary artery, an acute infarction may follow the ligation. When pre-operative investigations do not prove the presence of a shunt from the right coronary artery via the left coronary artery to the pulmonary artery, a test clamping of the left coronary artery should be performed; in both our cases this was well tolerated.…”