针刺左侧劳宫穴对健康青年大脑中动脉血流速度及 PI和 RI影响的研究

摘要

Objective:In order to provide a basis for the clinical application of the Laogong point,we used tran-scranial doppler sonography( TCD) to investigate the blood flow kinetics of the middle cerebral artery( MCA) by acupuncturing young healthy people at the left side of Laogong point in five different time points.Methods:30 healthy volunteers were selected randomly in the experiment,including 15 men and 15 women.We took the TCD to record the changes of MCA's blood flow velocity, pulsation index ( PI ) and resistance index ( RI ) at those checkpoints:10 minutes before acupuncture, 15 seconds after getting the Qi of acupuncture,15 minutes after ac-upuncture,at the time of the needle removal (30 minutes after acupuncture),and 10 minutes after the needle removal .Results:Compared with the time of 10 minutes before acupuncture the left side MCA's peak velocity of systolic(Vs), pulsation index (PI) and resistance index (Rl)were reduced significantly;the peak velocity of diastolic(Vd) and mean velocity(Vm)were increased significantly at the moment of the needle removal and 10 minutes after the needle removal (P<0.05);other parameters did not change significantly.(P>0.05).Con-clusion:When acupunctured on the left Laogong point,the same side MCA's Vs,PI and RI are reduced signifi-cantly , but the Vd and Vm are increased significantly at the moment of the needle removal and 10 minutes after the needle removal.%目的：通过针刺健康青年左侧劳宫穴，应用经颅多普勒超声仪（ TCD）观测5个不同时间点大脑中动脉（ MCA）的血流动力学变化，为临床应用该穴提供参考依据。方法：随机选取30名健康青年志愿者，男女各15名，针刺左侧劳宫穴，应用TCD检测并记录双侧大脑中动脉在针刺进针前10 min、进针时（进针得气并以平补平泻手法行针15 s后）、留针时（留针15 min并行平补平泻手法行针15 s后）、出针时（留针30 min并以平补平泻手法行针15 s后）、出针后10 min的血流速度及PI和RI的变化。结果：针刺左侧劳宫穴，在出针时和出针后10 min与针刺前相比左侧MCA的收缩期最大血流速度（ Vs）降低，舒张期最大血流速度（Vd）和平均血流速度（Vm）升高，搏动指数（PI）及阻抗指数（RI）降低（P＜0．05）；其余各参数变化均无统计学意义（ P＞0．05）。结论：针刺左侧劳宫穴，在出针时和出针后10 min可使同侧MCA的Vs下降，Vd和Vm升高，PI和RI均下降。