OBJECTIVE:To probe into the participation of clinical pharmacists in treatment of one patient with severe pneumonia .METHODS:The clinical pharmacists participated in the medication treatment process of one patient with severe pneumonia , analyzed the change of disease , summarized the program with different kinds of antibiotics and the efficacy , and provided pharmaceutical services for the patient .RESULTS:The efficacy of cefoxitin , as one of cephamycin , in primary treatment of respiratory tract infection was poorer than the basic drugs———high dose of penicillin.CONCLUSIONS:It is necessary to conduct the pharmacodynamics evaluation on the antibiotics of cephamycin , and take effective management measures and medication education , so as to improve the medical quality . The clinical pharmacists go into the clinic and provide pharmaceutical services can assist the clinicians to formulate the safe and effective medication treatment program and promote ration drug use .%目的：探讨药师参与重症肺炎患者的治疗实践。方法：药师参与1例重症肺炎患者的药物治疗过程，分析患者病情变化，总结不同抗菌药物治疗方案及其疗效，并提供药学服务。结果：首诊用头霉素类抗菌药物头孢西丁对呼吸道感染的疗效较差，而大剂量的青霉素等基本药物却发挥了很好的疗效。结论：有必要对头霉素类抗菌药物等进行药效学评价，并采取有效管理措施与用药教育，以提高医疗质量。临床药师深入临床，提供药学服务，可协助临床医师制订安全、有效的药物治疗方案，促进合理用药。
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