头孢菌素类发展很快,目前在美国上市品种已达十六种(见表一),而且不久还将续有增加.现在把头孢菌素列作首选药物治疗的疾病种类虽还不多,但使用已很广泛.从临床上得到的满意结果来看,确证了它们抗菌活性谱广与严重不良反应产生率低的性质.胃肠外给药的头孢菌素经常用“代”的名称分类,分类依据主要看它对革蓝氏阴性菌 Cephalosporins are rapidly developing and are currently on the market in the United States with 16 varieties listed (Table 1), and will continue to increase in the near future.Now cephalosporin is listed as the preferred drug treatment of the disease is not much, But the use has been very extensive.From the clinically satisfactory results, confirming their wide range of antibacterial activity and the nature of the serious adverse reaction rate low.Ceptiosporins often administered with parenteral Name classification, classification based mainly on it against Gram-negative bacteria