Anomalous origin of left coronary artery from pulmonary artery

An anomalous origin of the left coronary artery from the pulmonary artery in a 26-year-old man was corrected by the ligation of the artery at its anomalous origin, followed by the construction of an aortocoronary bypass with a venous graft. The flow of blood to the myocardium was measured for the purpose of comparing the effect of the bypass method with that of the ligation method. The result suggested that the bypass method provided a greater flow of blood to the myocardium than did ligation alone.

Ruptured aneurysm of aortic sinus of Valsalva into right atrium. Associated atrioventricular block presumable caused by aneurysmal compression of His bundle

We have seen a case of rupture of an aneurysm of the noncoronary sinus into the right atrium. Surgery revealed an aneurysmal mass the size of the tip of an index finger extending through the inter-atrial septum down to just above the tricuspid valvular ostium. An electrocardiogram showed first-degree atrioventricular block, while the His bundle electrogram demonstrated the presence of disturbances in the intra-atrial as well as His bundle conduction. The disturbance in His bundle conduction was interpreted as being due to compression of the His bundle by the aneurysm.

Common atrium associated with anomalous high insertion of the inferior vena cava

The case is reported of a 38-year-old housewife with a common atrium associated with anomalous high insertion of the inferior vena cava, absence of the coronary sinus, and drainage of a left hepatic vein into the left side of common atrium. Surgical repair was performed successfully. The procedure was closure of a nearly total atrial septal defect with a Dacron patch. Embroyologically, the development failure of the sinu-atrial fold appears to be the basic causal factor.