Abstract
This experimental work was undertaken to develop a new method to close the ventricular septal rupture (VSR) tempolarily. The hemodynamic effect of the VSR produced by a specially designed septotome was evaluated in 17 mongrel dogs. When the size of the VSR was more than 9mm in diameter, all of the dogs died in either frank acute heart failure or severe arrhythmia. If the size of VSR was less than 9mm in diameter, all of the dogs survived without sequelae. A specially curved catheter-sheath was developed to faciliate easy insertion of the balloon catheter into the VSR. A modified Fogarty venous occlusion catheter (8F) was introduced via superior vena cava into the left venticle through this balloon catheter method in 9 dogs and succeeded in 7 dogs. In conclusion, this method seems to be very useful and attractive but further modification will be neccessary before its clinical use.
