体外治疗性超声对正常心肌的作用  

Effect of the external therapeutic ultrasound on normal myocardium

作　　者：孙向东 楚咏晗 刘小冬 王海清[2] 

机构地区：[1]信阳市中心医院心内科,河南信阳464000 [2]华中科技大学同济医学院附属协和医院心内科

出　　处：《临床心血管病杂志》2003年第9期548-549,共2页Journal of Clinical Cardiology

摘　　要：目的 :探讨体外治疗性超声 (ETUS)对正常心肌的影响。方法 :选取健康日本大耳白兔 15只 ,随机分成 3组 ,连续波ETUS(A组 ,n =5 ) ,脉冲波ETUS组 (B组 ,n =5 ) ,空白对照组 (C组 ,n =5 ) ) ,ETUS的频率和声强分别为 0 .8MHz和 2 .3W /cm ,观察实验后兔心肌组织学结构。结果 :光镜 :A、B两组兔心肌可见轻度损伤性表现 ,而C组无此变化。电镜 :A、B组兔心肌可见 0～Ⅲ级损伤表现 ,C组 0～Ⅰ级损伤。结论Objective:To explore the effect of external therapeutic ultrasound(ETUS) on the normal myocardium.Methods:Fifteen healthy Japanese rabbits were randomized into three groups, continuous wave (group A, n=5), pulsed wave (group B, n=5), and controls (group C, n=5). ETUS worked at 0.8 MHz and 2.3 W/cm. The histology structure of myocardium were observed after the experiment.Results:Experiment showed that the myocardium developed mild lesion in group A and B, and no changes in group C.Grade 0 to III of myocardial lesion were observed in group A and B, and Grade 0 to I in group C.Conclusion:Adequate and mode dosage of ETUS has therapeutic effect on myocardium but mild injuries.

关 键 词：体外治疗性超声 正常心肌 组织学 影响 

分 类 号：R331.31[医药卫生—人体生理学] R454.3[医药卫生—基础医学]