红外激光针灸对垂体后叶素致家兔心动过缓的影响

目的观察红外激光照射内关穴对垂体后叶素致家兔心动过缓的影响。方法将自制复合激光治疗仪输出的10.6μmCO2红外激光和650nm半导体红色激光及二者聚合后的复合激光分别照射动物内关穴,分析红外激光与红色激光的效应差异及二者聚合照射的效应变化。结果10.6μmCO2红外激光内关组心率在垂体后叶素注射后30min和40min时与正常对照组比较,差异无统计学意义(P>0.05),而650nm半导体激光内关组心率在垂体后叶素注射后各时间点与正常对照组比较,差异有统计学意义(P<0.05)。复合激光内关组心率在垂体后叶素注射后30min与模型组比较,差异有统计学意义(P<0.05),与正常对照组比较,差异无统计学意义(P>0.05),而复合激光非穴组心率与模型组比较,差异无统计学意义(P>0.05),与正常对照组比较,差异有统计学意义(P<0.05)。结论10.6μmCO2红外激光照射内关穴对垂体后叶素致心动过缓有明显改善作用,而650nm半导体激光无明显效应,但二者有协同作用,CO2红外激光照射穴位产生的热效应可能有利于半导体红色激光的穿透及其生化反应的进行。内关穴激光照射对心率的改善作用具有相对特异性。

Effect of infrared laser on pituitrin-induced bradycardia in rabbits

OBJECTIVE: To observe the effect of infrared laser stimulation on Neiguan (PC 6) for bradycardia of rabbits induced by injection of pituitrin. METHODS: 10.6 microm CO(2) infrared laser, 650 nm semiconductor red laser and the compound laser of their aggregation were sent out by a compound laser sanatory instrument to stimulate Neiguan (PC 6) respectively for the purpose of analyzing the differences of the effects exerted by infrared laser and red laser as well as the changes of the effects after their aggregation. RESULTS: After 30 min and 40 min of the injection of pituitrin, the heart rate showed no significant difference between 10.6 microm CO(2) infrared laser group and the normal control group (P>0.05). However, the heart rate showed significant difference between the 650 nm semiconductor red laser group and the normal control group (P<0.05). After 30 min of the injection of pituitrin, the heart rate of the compound laser group were significantly different to that of the untreated group (P<0.05), and it was not significantly different to that of the normal control group (P>0.05). However, the heart rate of non-acupoint stimulated by the compound laser group showed no significant difference to that of the untreated group (P>0.05), and it was significantly different to that of the normal control group (P<0.05). CONCLUSION: Stimulation on Neiguan with 10.6 microm CO(2) infrared laser can evidently improve the bradycardia induced by injection of pituitrin, while the 650 nm semiconductor red laser has no such function, but they have coordinating effect. The thermal effect produced by CO(2) infrared laser stimulating acupoint is probably beneficial for semiconductor laser penetrating skin as well as the biochemical reactions it carries. The improvement of heart rate produced by the laser stimulation on Neiguan (PC 6) has relative specificity.