Abstract
Recently, Laser has been widely used in the field of medicine and its favorable results have been obtained. Since fifteen years ago, we have performed surgical treatment for ischemic heart disease. There are a few cases among them who A-C bypass could not be performed because of diffuse and multiple stenosis of the coronary arteries. For the purpose to decrease mortality rate of severe those patients we have experimentally employed high power CO2 Laser to make transventricular puncture for improving arterial blood perfusion in the ischemic area of the myocardium, which was produced by multiple ligation of the coronary arteries. Consequently, myocardial puncture could be made by CO2 Laser and long term patency of it was observed microscopically which led to improve the ischemic myocardium. On the other hand, vascular anastomosis for the purpose of A-C bypass was experimentally done by application of low power CO2 Laser. Eighteen dogs were utilized for this study. Both femoral artery and its vein were exposed under general anesthesia and mostly side to side anastomoses were made by CO2 Laser (output 20-150 mW, irradiation time 15-240 sec). Subsequently, the following conclusions were obtained.
1) Vascular anastomosis could be satisfactorily done by CO2 Laser.
2) 20-40 mW in output and 60-120 sec in irradiation time were optimal conditions for small vessel anastomosis.
3) Good healing at the site of anastomosis was observed in micro-scopic findings, as the time after surgery went on.
4) Vascular anastomosis by CO2 Laser was useful method which could be indicated to clinical application in near future.
