微波心肌血运重建术后心肌孔道组织学的实验观察

目的：探讨微波心肌血运重建术的可行性。方法：在家兔左心室进行微波心肌打孔，设立正常对照组、针刺组及实验组。对照组行单纯开胸探查术。针刺组在开胸心脏跳动下，进行左心室壁穿刺３￣５孔，实验组在同样条件下行左心室针状微波辐射器穿刺后发射微波，发射剂量为３０Ｗ，辐射时间３秒。

Histologic Observation of Microwave-Induced Transmyocardial Channel Experiments

Objective:To evaluate the effects of microwave-created channels in the left ventricular wall for transmyocardial revascu-larization. Methods:35 rabbits were divided randomly into 3 groups:normal control,acupuncture with pure needle and ex-periment group. The histological changes under the optical microscope and the electronic microscope were observed at 30 d and 60 d after cardiac surgery. Results: In acupuncture group the internal diameter and area of channel were gradually be-coming smaller. Although the channeb in experimental group were smaller than the pure needle group,many new microves-sels were seen after 30 d and 60 d. Conclusion:Microwave could be used to create small channels through myocardium and to induce many new microvessels.