维生素K_3是目前常用的止血药之一,主要用于凝血酶原过低症、维生素K缺乏症、阻塞性黄疸所引起的出血。也用于解除肠绞痛及平喘。一般应用:每次肌注4mg,一日2～3次。防止初生儿出血:产妇在产前一周每日肌注2～4mg。用于胃肠道及胆绞痛;每次肌注8～16mg。近年来国内文献报道,有的患者在应用本品后出现过敏反应。有的在用药后2～3分钟出现胸闷与窘迫感及喉头堵塞感、干咳、烦躁不安、全身皮肤出现弥漫性块状红色皮疹。严重者出现过敏性休克,表现为面色 Vitamin K_3 is currently one of the commonly used hemostatic drugs, mainly for prothrombin low, vitamin K deficiency, bleeding caused by obstructive jaundice. Also used to relieve colic and asthma. General application: Each intramuscular injection 4mg, 2 to 3 times a day. Prevent bleeding in newborn: Maternal daily intramuscular injection in the prenatal week 2 ~ 4mg. For gastrointestinal and biliary colic; each intramuscular injection of 8 ~ 16mg. In recent years, domestic literature reports, some patients in the application of this product after anaphylaxis. Some 2 to 3 minutes after treatment, chest tightness and embarrassment and throat blockage, dry cough, irritability, systemic mass diffuse massive red rash. Severe cases of anaphylactic shock, manifested as complexion