抗菌谱总是记不住?这几张图帮你搞定!

2022-02-28 检验星空 检验星空

一文读懂!

微生物分类
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1. 青霉素类
青霉素可分为:窄谱青霉素、耐青霉素酶青霉素、抗肠杆菌广谱青霉素和抗绿脓杆菌广谱青霉素。
窄谱青霉素:青霉素G、普鲁卡因青霉素、苄星青霉素、青霉素V等,主要作用于革兰阳性菌的青霉素
耐青霉素酶青霉素:苯唑西林、氯唑西林、氟氯西林等,抗菌谱与窄谱青霉素相仿,但抗菌作用较差,对因产酶而对青霉素耐药的葡萄球菌敏感,但甲氧西林耐药葡萄球菌对本类药物耐药。
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抗肠杆菌广谱青霉素:氨苄西林、阿莫西林等,对部分肠杆菌科细菌有抗菌活性。
抗绿脓杆菌广谱青霉素:哌拉西林、阿洛西林、美洛西林、替卡西林等,对多数革兰阴性杆菌包括铜绿假单胞菌具抗菌活性。
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2. 头孢菌素类
第一代头孢菌素:主要作用于需氧革兰阳性球菌,仅对少数革兰阴性杆菌有一定抗菌活性;常用的注射剂有头孢唑啉、头孢拉定等,口服制剂有头孢拉定、头孢氨苄和头孢羟氨苄等。
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第二代头孢菌素:对革兰阳性球菌的活性与第一代相仿或略差,对部分革兰阴性杆菌亦具有抗菌活性;注射剂有头孢呋辛、头孢替安等,口服制剂有头孢克洛、头孢呋辛酯和头孢丙烯等。
头霉素类:头孢西丁、头孢美唑、头孢米诺等,抗菌谱和抗菌作用与第二代头孢菌素相仿,但对脆弱拟杆菌等厌氧菌抗菌作用较头孢菌素类强。
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第三代头孢菌素:对肠杆菌科细菌等革兰阴性杆菌具有强大抗菌作用,头孢他啶和头孢哌酮对铜绿假单胞菌亦具较强抗菌活性;注射品种有头孢噻肟、头孢曲松、头孢他啶、头孢哌酮等,口服品种有头孢克肟和头孢泊肟酯等,口服品种对铜绿假单胞菌均无作用。
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第四代头孢菌素:常用者为头孢吡肟,对肠杆菌科细菌作用与第三代头孢菌素大致相仿,对铜绿假单胞菌的作用与头孢他啶相仿,对革兰阳性球菌的作用较第三代头孢菌素略强。
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3. 碳青霉烯类
碳青霉烯类对各种革兰阳性球菌、革兰阴性杆菌(包括铜绿假单胞菌、不动杆菌属)和多数厌氧菌具强大抗菌活性,对多数β-内酰胺酶高度稳定,但对甲氧西林耐药葡萄球菌和嗜麦芽窄食单胞菌等抗菌作用差。
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4. 单环β-内酰胺类
现有品种为氨曲南。对肠杆菌科细菌、铜绿假单胞菌等需氧革兰阴性菌具有良好抗菌活性,对需氧革兰阳性菌和厌氧菌无抗菌活性。该类药物具有肾毒性低。
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5. 氨基糖苷类
链霉素、卡那霉素:对肠杆菌科和葡萄球菌属细菌有良好抗菌作用,但对铜绿假单胞菌无作用者。
庆大霉素、妥布霉素、奈替米星、阿米卡星、异帕米星、小诺米星、依替米星:对肠杆菌科细菌和铜绿假单胞菌等革兰阴性杆菌具强大抗菌活性,对葡萄球菌属亦有良好作用。
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6. 林可酰胺类
林可霉素及克林霉素,对革兰阳性菌及厌氧菌具良好抗菌活性,目前肺炎链球菌等细菌对其耐药性高。
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7. 糖肽类
万古霉素、去甲万古霉素和替考拉宁:所有的糖肽类抗菌药物对革兰阳性菌有活性,包括甲氧西林耐药葡萄球菌属、肠球菌属、李斯特菌属、链球菌属、梭状芽胞杆菌等。
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8. 氟喹诺酮类
左氧氟沙星、莫西沙星:对肺炎链球菌、A 组溶血性链球菌等革兰阳性球菌、衣原体属、支原体属、军团菌等细胞内病原或厌氧菌的作用强。
环丙沙星、左氧氟沙星:主要适用于肺炎克雷伯菌、肠杆菌属、假单胞菌属等革兰阴性杆菌所致的下呼吸道感染
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9. 大环内酯类
大环内酯类:对革兰阳性菌、厌氧菌、支原体及衣原体等具抗菌活性。新大环内酯类阿奇霉素、克拉霉素、罗红霉素等对流感嗜血杆菌、肺炎支原体或肺炎衣原体等的抗微生物活性增强。
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10. 四环素类
四环素、金霉素、多西环素、美他环素和米诺环素:具广谱抗菌活性,对葡萄球菌属、链球菌属、肠杆菌科(大肠埃希菌、克雷伯菌属)、不动杆菌属、嗜麦芽窄食单胞菌等具有抗菌活性,且对布鲁菌属具有良好抗菌活性。
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11. 硝基咪唑类
硝基咪唑类有甲硝唑、替硝唑和奥硝唑等,对拟杆菌属、梭杆菌属、普雷沃菌属、梭菌属等厌氧菌均具高度抗菌活性,对滴虫、阿米巴和蓝氏贾第鞭毛虫等原虫亦具良好活性。
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    2022-03-02 ms7000000141352835

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    2022-03-01 胡国宏

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