不同电针强度对高血压实证病人血压的影响

Influence of Different Intensities of Electroacupuncture on Blood Pressure in Excess-syndrome Type Hypertension Patients

目的 :探讨电针强度在血压调整中的重要性及其补泻作用。方法 :把高血压实证病人随机分为强电针组和中电针组 ,以相同的电针波型、频率和穴位 ,分别以 3 .7mA和 2 .7mA强度进行电针刺激。结果 :电针后 ,强电针组收缩压由 2 2 .0kPa升至 2 6.2kPa(P <0 .0 1 ) ;中电针组收缩压和舒张压分别由 2 2 .3kPa和 1 1 .9kPa降至 2 0 .7kPa(P <0 .0 1 )和 1 1 .3kPa(P <0 .0 1 )。结论 :电针强度在血压调整中起重要作用。强电针有兴奋性调整作用 ,使实证病人血压升高 ,相当于“补”的功用 ;中强度电针有抑制性的调整作用 ,使实证病人血压降低 ,相当于“泻”的功用。提示电针调整血压时 ,其强度应因证而异。

Objective: To research the significance of differen t intensitie s of electroacupuncture (EA) in the regulation of blood pressure. Methods: A tot al of 44 cases of excess-syndrome type hypertension patients were divided by randomizing into high-intensity EA group (n=21) and medium -intensi ty EA group (n=23) . Bilateral Quchi (LI 11) and Taichong (LR 3) were punctured and stimulated with the same continuous waveform, same frequency (70 pulses/min), and different ele c tric current intensities:3.7 mA (high intensity) and 2.7 mA (medium intensity). EA treatment w as given to the patients with double blind method. Results: T he sensation thres hold and pain threshold of high-intensity EA and medium-intensity EA groups w ere 1.50±0.29 mA and 1.52±0.33 mA, 3.93±0.47 mA and 3.89±0.43 mA respect ively. Following high-intensity EA stimulation, the systolic and diastolic blood press ur e values increased from 22.0±1.8 kPa and 11.9±0.3 kPa to 26.2±1.6 kPa ( P< 0.0 1) and 12.0±0.7 kPa separately; while after medium-intensity EA stimulation , th e systolic and diastolic blood pressure values declined significantly from 22.3 ±1.6 kPa and 11.9±0.8 kPa to 20.7± 1.4 kPa(P<0.01)and 11 .3±0.7 kPa( P<0.01)respectiv ely. Conclusion: The electric current intensity of EA plays an important role in the regu lation of blood pressure. The high-intensity EA may raise blood pressure while t he medium-intensity EA has the effect of lowering blood pressure and the later is suitable to treat excess-syndrome type hypertension patients.