硝苯吡啶是治疗心绞痛和高血压病的常用药物.已试用于治疗原发性肺动脉高压、心力衰竭、偏头痛、尿道梗阻、胃肠平滑肌痉挛等多种疾病.用途愈来愈广,但是青光患眼者应慎用或忌用。这是由硝苯吡啶的药理作用决定的.该药阻滞钙内流.阻碍细胞器内钙的释放.阻断血管膜上α肾上腺素受体等.抑制血管平滑肌的收缩.扩张血管.而虹膜和 Nifedipine is a commonly used drug for the treatment of angina pectoris and hypertension and has been used for a variety of diseases such as primary pulmonary hypertension, heart failure, migraine, urethral obstruction, gastrointestinal smooth muscle spasm, People suffering from light should be used with caution or caution. This is determined by the pharmacological effects of nifedipine, which blocks the influx of calcium, blocks the release of intracellular calcium, blocks the alpha adrenergic receptor on the vascular membrane, inhibits the contraction of vascular smooth muscle, and dilates blood vessels. with