ACUPUNCTURE ANAESTHESIA UPON CARDIAC PERFORMANCE

Sun Dajin, Hang Yannan, Zhang Xiaoxian, Xu Canran, Lan Tingyun, Yao Jianling, Wang Zifen, Shen )ian. Sun Yuelan

{The Third People's Hospital, Shanghai Second Medical College, Shanghai)

Since 1980 we have studied the effects of acupuncture upon cardiac function using the parameters of the impedance cardiogram, the contractile elements and pulmonary diastolic pressure in dog experiment and later on employing impedance cardiogram solely in clinical open heart surgery.

Experimental results: After acupuncture (n=4) PADP reduced by 18% (P<0.01), no significant in CVP and MAP, R-dp/dtmax shortened by 9.39% (P<0.01), LVP, dp/dtmax, dp/dt/P and Vmax increased by 9.87%, 11.0%,10.8% and 12.9% (P<0.01) respectively. No marked changes in the all indices of the impedance cardiogram except I/PEP2. One minute after intravenous injection of thiopentone (n=6), PADP elevated by 14.7% (P<0.01), CVP increased by 17% (P<0.05), MAP reduced by 19.7% (P<0.001), R-dp/dtmax prolonged by 10.4% (P<0.001), LVP, dp/dtmax, dp/dt/P and Vmax decreased by 24%, 30.6%, 24.2% and 21.3% (P<0.001). No significant changes in all indices of the impedance cardiogram. Comparing the difference above two groups showed marked significant (P<0.01).

Clinical material: In this series there were 12 cases of open heart surgery i.e., VSD 5, ASD 4, tetralogy of Fallot 1 and PA 2. The ages ranged from 16 to 34 years. The results of indices including heart rate, SV, CO, CI, and STI before and after induction of acupuncture anesthesia showed no significant changes as compared with control value (P<0.05).

From above it suggested that acupuncture had no depressive effect on cardiac function, and could apparently increase the cardiac contractility, as evidenced by the shortened R-dp/dtmax, increased dp/dtmax, dp'dt/P and Vmax, and reduced PADP.