目的观察星状神经节阻滞(SGB)对兔血浆去甲肾上腺素(NE)浓度的影响，探讨其治疗疼痛的可能机制。

Objective To investigate the effect of stellate ganglion block (SGB) on the plasma concentration of noradrenaline (ne) in rabbits suffering from acute pain and the possible mechanism.

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方法以去甲肾上腺素（NE）、组胺、高钾和苯肾上腺素引起兔主动脉条收缩；

METHODS NE, histamine, KCl and phenylephedrinum were used to induce the contraction of the rabbit aortic strip.

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方法以离体兔主动脉条观察该三种血管舒张药对氯化钾、去甲肾上腺素量效曲线及预收缩血管的影响。

Methods The effects of three vasodilators on the potassium chloride, norepinephrine concentration-response curves and precontracted rabbit aorta were investigated.

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