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本帖最后由 YZyinyue 于 2014-8-27 15:26 编辑
楼主,请详细看分类:文献中第三代头孢菌素分为:3a和3b。是第三代头孢菌素的进一步分类,并不是把头孢菌素分为a,b两类。
3a:Group 3a cephalosporins :Group 3a cephalosporins have high activity against Gram-negative bacteria and less activity against staphylococci. They differ mainly in their pharmacokinetic characteristics.
头孢菌素3a对革兰氏阴性菌具有较高活性,对葡萄球菌的活性较低。他们的区别主要体现在药代动力学。
3b:Group 3b cephalosporins:Group 3b cephalosporins, e.g. ceftazidime and cefoperazone, have added high anti-pseudomonal activity.However, the activity of cefoperazone against P. aeruginosa is markedly inferior to that of the other substances in this group.
3b组头孢菌素类:第3b组头孢菌素类,如:头孢他啶,头孢哌酮,提高了抗铜绿假单胞菌的活性.然而,头孢哌酮对铜绿假单胞菌的活性明显低于该组中的其他药物。
出处:2013欧洲泌尿外科学会指南--泌尿系统感染。 |
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