循经感传与针刺疗效的关系

许多单位都有报道。在痛症、小儿哮喘、青少年近视眼、面肌痉挛、胃下垂、胃穿孔等病种中都观察到感传显著程度与针刺的临床疗效有密切的关系

而且感传的方向还有重要的意义。循经感传对针刺调整左心功能的影响

虽也有人进行过一些观察

但结果还不一致。程连瑚等观察到

在23例针刺内关Investigations have been performed on 105 males and 65 females

aged 30-74 years

to evaluate the role of propagated sensation along the channel (PSC)in realization of acupuncture effect in the regulation of cardiac fu- nction.ECG

cardiophonogram

rheocardiogram were recorded simultaneously in each subject before acupuncture

to get the basal values of cardiac systolic time interval(PEPI

LVETI

P/LI)

Heather index(HI)

stroke volume (SV)

Cardiac Output(CO)

S-T segment and T wave of ECG.Another me- asurement was taken again after acupuncture of left Neiguan for 15 minutes

to get the variation of these 8 indices induced by acupuncture.The control experiments were conducted on the other days on 61 subjects with or without PSC.The subjects lay quietly for the observation period without receiving acupuncture.The results:(1)in the perceptible PSC group the cardiac functi- on remarkably improved

and the variation of all 8 indices were highly si- gnificant(P<0.01-0.001)

(2)in non-perceptible PSC groupithe impro- vements of seven of the 8 indices(except S-T segment)were still significant (P<0.05-0.001)

but less in degree than those with perceptible PSC

(3)except in PEPI

the difference of variation caused by acupuncture in all the other 7 indices between the perceptible and non-perceptible PSC groups were significant(P<0.05-0.001)

(4)the results of control experiments sho- wed that lying quietly for the experimental period itself caused no significant change(P<0.05)in all the 8 indices

(5)in latent PSC group significant improvement in 7 of the 8 indices(except S-T segment)was caused by acu- puncture.In contrast

in the group without latent PSC marked change only appeared in LVETI and P/LI(P<0.05)

but not in the remaining 6 indices. Better improvement of PEPI

P/LI

HI

SV

CO and T wave were achieved in the subjects with latent PSC than in those without latent PSC.It has been known that the increase in SV it a main indicator for improvement of ca- rdiac function.In the present study

according to the increment of SV the acupuncture effect could be graded into four degrees:excellent

good

fair and poor.The extent of distinctness of PSC could also be graded in the order of perceptible

latent and non-PSC.Using the formula of Spearman

the co- rrelation coefficient(r_s)between the degrees of PSC and that of the acupu- ncture effect

calculated from the data taken from a total of 170 subjects

is 0

893(P<0.001). The results suggest that the perceptible and latent PSC are identical in nature but different in degree.Both of them play an important role in the realization of acupuncture effect.Having

clarified the above problem

the relationship between PSC and acupuncture effect could be explained more sa- tisfactorily and a big stride forward was made in the investigation in this respect.