我们曾在休克动物上证明针刺人中具有抗休克效应

并认为这种效应与改善内脏器官血流量及心脏功能有关。国内先后报道刺激“人中”等灾可引起明显的加压反应

但对针刺加压反应的生理特性与本质尚缺乏系统研究。本工作对针刺加压反应进行系统的观察与研究

以期阐明其生理特性与本质。方法实验在104只猫与16只家兔上进行

雌雄不拘。猫在乙醚麻醉下手术

手术后立即停止麻醉

家兔则在局麻下进行手术。随后从静脉注射三碘季胺酚(4～6毫克/公The work was carried out to observe functional changes of the resis- tance blood vessels

the capacity blood vessels

the heart and the other autonomic effectors during the pressor reaction induced by acupuncture

in order to show its physiological characteristics. The experiments were performed on 104 cats and 16 rabbits with con- sciousness. The pressor reaction induced by acupuncture accompanied con- traction of the resistance blood vessels

increase of total peripheral re- sistance

contraction of the capacity blood vessels and reabsorption of ti- ssure so as to induce increase of blood pressure. At the same time

it accompanied augmentation of both cardiac contractility and cardiac work so as to keep cardiac output at normal level during increase of total peri- pheral resistance. The above-mentioned cardiovascular reactions were induced through sympathetic nerves. Moreover

it accompanied contraction of the nictitating membrane

dilation of the pupil

contraction of the bladder and contraction or dilation of the small intestine. Those effects were indu- ced through sympathetic nerves or parasympathetic nerves. The above-mentioned results suggest that the pressor reaction inducad by acupuncture accompanys widespread excitation of autonomic nervous system. Its physiological characteritics are similar to those of the pressor reaction induced by stimulation of the saphenous nerve. Both of them be- long to nonspecific cardiovascular reflex reactions. However

the pressor reactions induced by decreasing the pressure of carotid sinus and stimula- ting carotid chemoreceptors respectively do not accompany widespread excitation of autonomic nervous system

just accompany functional changes of the heart and certain local blood vessels. Both of them belong to spe- cific cardiovascular ref1ex reactions

which play an important role in re- gulation of cardiovascular functions.