1　对象与方法1.1　病例选择　选择静脉滴注致药液外渗患者35例,随机分为试验组20例,对照组15例,两组病人药液外渗情况相似。试验组:血管收缩药2例,阳离子液12例,高渗液5例,抗肿瘤药1例。对照组:血管收缩药5例,阳离子液8例,高渗液、抗肿瘤药各1例。1.2　治疗方法　试验组用湿润 1 Subjects and methods 1.1 Case Selection Select intravenous infusion of drug-induced extravasation in 35 patients were randomly divided into experimental group 20 cases, control group 15 cases, the two groups of patients with similar fluid extravasation. Experimental group: 2 cases of vasoconstrictor drugs, 12 cases of cationic liquid, 5 cases of hypertonic solution, antineoplastic drugs in 1 case. Control group: vasoconstriction drug in 5 cases, 8 cases of cationic liquid, hypertonic solution, anticancer drugs in 1 case. 1.2 treatment test group with moist