垂体后叶素有较强的缩血管作用。文献报道,一次常规剂量能降低门静脉压力30—50%,维持4—45分钟。70年代以后,国内外开始用持续静脉滴注该药来治疗上消化道大出血。我科针对数十例上消化道大出血进行持续静脉滴注垂体后叶素治疗,止血率达87%。但是,垂体后叶素不仅能使腹腔小动脉及毛细血管收缩,而且还能使冠状动脉,肾小动脉等 Pituitrin has a strong vasoconstrictor effect. Reported in the literature, a conventional dose can reduce the portal pressure 30-50%, maintaining 4-45 minutes. After the 1970s, domestic and foreign began to use continuous intravenous infusion of drugs to treat upper gastrointestinal bleeding. Our department for dozens of cases of upper gastrointestinal bleeding for sustained intravenous infusion of pituitrin treatment, bleeding rate of 87%. However, pituitrin can not only contraction of the peritoneal arterioles and capillaries, but also make the coronary arteries, renal arteries and the like