一、应用原理抗生素是用来控制感染的。使用前,必须尽可能分离和鉴定病原体,并测定其对各种抗生素的敏感性。病原体的分离应根据病人具体情况,采用不同的标本和分离手段。分离鉴定病原体后,最常用的敏感度试验是纸片法。如采用标准化的Kirby—Bauer纸片扩散法,其准确性和重复性较高,是一种很有价值的试验。此外,对一些严重感染,如细菌性心内膜炎等,常需采用定量的 First, the application of principles Antibiotics are used to control the infection. Before use, pathogens must be separated and identified as much as possible and their susceptibility to various antibiotics determined. Pathogen isolation should be based on the patient’s specific circumstances, using different specimens and separation means. Isolation and identification of pathogens, the most commonly used sensitivity test is the paper method. Such as the use of standardized Kirby-Bauer disk diffusion method, its high accuracy and repeatability, is a very valuable test. In addition, for some serious infections, such as bacterial endocarditis, often need to use quantitative