头孢菌素 Cephem 类抗生素和青霉素类抗生素均属于β-内酰胺类抗生素,通过抑制细菌的细胞壁发挥其杀菌作用。根据发现的先后次序和抗菌活性等可将头孢菌素分为三代,并在此基础上进一步分为5组。现将头孢菌素类抗生素的药物特性,结合临床应用概述如下。一、分类第1组的3种抗生素药物的抗菌作用相 Cephem antibiotics cephalosporins and penicillins antibiotics are β-lactam antibiotics, by inhibiting the bacterial cell wall to play its bactericidal effect. Cephalosporins can be divided into three generations according to the order of discovery and antibacterial activity, and further divided into five groups on the basis of this. The current cephalosporin antibiotic drug characteristics, combined with clinical application outlined below. First, the first group of three kinds of antibiotics antibacterial phase