加压素(vasopressin)能直接引起血管平滑肌的收缩,减少血管横断面血流量,因此不能用于严重心胶痛及近期心肌梗塞的病人。局部手术野应用,能减少出血并延长麻药作用的时间。根据狗的血管造影及血液动力学研究,加压素具有将颈外动脉的血流转移到颈内动脉的作用。但这种机制在人身上尚未证实。对轻度、中度血友病及遗传性假血友病患者,加压素能引起自体血浆 Vasopressin can directly cause contraction of vascular smooth muscle and reduce vascular cross-sectional blood flow, so it can not be used in patients with severe glucagon pain and recent myocardial infarction. Local surgical field applications, can reduce bleeding and prolong the role of anesthetic time. According to angiographic and hemodynamic studies in dogs, vasopressin has the effect of transferring the blood flow of the external carotid artery to the internal carotid artery. But this mechanism has not been confirmed in people. For mild to moderate hemophilia and hereditary hemophilia patients, vasopressin can cause autologous plasma