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A NEW METHOD OF VASCULAR ANASTOMOSIS BY LOW ENERGY CO2 LASER : EXPERIMENTAL AND CLINICAL STUDY

English (英語)

The Kobe journal of the medical sciences

31(4)

151-168

1985-08

Nowadays, in vascular surgery there are some problems in maintaining the long-term patency after a conventional anastomosis especially for the small caliber vessels. So low energy CO2 laser which indicated minimized tissue reaction in preliminary experiments was employed to make vascular anastomosis with only a few stay sutures for the purpose of aortocoronary bypass. Fifty four mongrel dogs were used in this study. Side-to-side, end-to-side and end-to-end anastomoses in the femoral arteries and their veins, the carotid arteries and their veins were prudently performed by CO2 laser. A-C bypass was also successfully done between the left internal mammary artery and the left anterior descending artery under the beating heart. Outputs of 20-40mW and irradiation times of 6-12sec/mm were optimal conditions for anastomosis of small caliber vessels. Satisfactory intensity and good healing of the anastomotic sites were recognized by pressure tolerance test or tensile strength test and pathological examinations in comparison with the conventional suture method. On the basis of the excellent results of our experiment, a low energy co2 laser was utilized clinically in 4 patients with anginal attack or renal failure. All patients are doing well without any complications through the vascular anastomosis by laser. This method may be recommended in performing vascular anastomosis for small caliber vessels such as aorta- coronary bypass in the near future.

clinical application

紀要論文