电针不同原穴对急性心肌缺血家兔心率变异性的影响

目的：观察电针不同原穴对急性心肌缺血家兔心率变异性的影响，探讨不同原穴针刺效应的特异性。方法56只家兔随机分为正常对照组、模型对照组、电针“神门”组、电针“太冲”组、电针“大陵”组、电针“太溪”组和电针非经穴组，每组8只；经股静脉一次性注射垂体后叶素复制急性心肌缺血家兔模型，采用Biopac 生物信号采集系统检测心电信号，分析各组家兔各时间段心率变异性参数。结果急性心肌缺血模型复制后家兔的心率明显下降、R-R间期（R-R interval，RRI）、总变异性（Total variability，TV）及低频/高频（Low frequency/high frequency，LF/HF）明显升高，与正常对照组家兔比较差异有统计学意义（P〈0.01）；“神门”组、“大陵”组及“太冲”组的HR、RRI、TV及LF/HF与模型组比较差异有统计学意义（P〈0.01）；而“太溪”组及非经穴组的HR、RRI、TV及LF/HF与模型组家兔比较差异无统计学意义（P〉0.05）。结论神门和心包经原穴大陵对急性心肌缺血家兔心率变异性的调整作用较为明显，心包经同名经肝经原穴太冲有一定的调整作用，心经同名经肾经原穴太溪对心率变异性的调整作用不明显。

Effects on Heart Rate Variability of Acute Myocardial Ischemia Rabbitswith Electro-acupuncture at Different Primary Point

Objective To observe the treatment effects on heart rate variability of electro-acupuncture at different primary point with acute myocardial ischemia rabbits. To investigate the specificity effects of adjusting cardiac function after electro-acupuncturing （EA） on different primary acupoints. Methods 56 healthy rabbits are selected,8 are chosen randomly as normal group. The odd rabbits were developed acute myocardial ischemia models by intravenous administration posterior pituitrin into femoral vein,and AMI model rabbits were randomly divided into model group,EA on HT7 group,EA on KI3 group,EA on PC7 group,EA on LR3 group and EA on nonpoint group,8 in each group. The heart rate variability were analyzed by BIOPAC system and then analysis the signals with HRV＆BRS 2.00 software. Results The HR,RRI,TV,LF/HF of EA on HT7 group,PC7 group and LR3 group have significant differences comparing with model group （P〈0.05）,while the HR,RRI,TV,LF/HF of EA on KI3 group and EA on nonpoint group after EA have no significant differences comparing with model group（P〉0.05）. Conclusion HT7 and PC7 have the best effect on the adjusting heart rate variability of acute myocardial ischemia rabbits,while LR3 has certain adjustment effect and KI 3 has not obvious effect.