Abstract
We have developed cavoatrial venous cannula, being each size of 24, 26, and 28F, 60cm in length, and having 12 side holes in its distal portion, that permits adequate drainage from both the right atrium and the inferior vena cava. We have used these cannulae for femoro-femoral bypass in 26 cases of cardiovascular surgery. These cavoatrial cannulae could provide sufficient venous drainage enough to stabilize hemodynamic change during femorofem oral bypass.