老年患者革兰阴性杆菌性肺炎的病原菌分布及耐药性监测

目的探讨老年患者革兰阴性杆菌性肺炎的病原菌分布及耐药状况,制定预防与控制措施。方法对368例老年革兰阴性杆菌性肺炎患者的痰及下呼吸道分泌物进行常规细菌培养,用琼脂扩散法进行体外药物敏感试验并统计分析。结果铜绿假单胞菌检出率占首位,达25.0%;除流感嗜血菌对常用抗菌药物保持较好的敏感性外,其他病原菌均已产生了较高的耐药性;产超广谱β-内酰胺酶(ESBLs)肠杆菌科细菌检出率达30.2%。结论临床微生物室必须做好感染病原菌的监测工作,为临床医师合理用药提供参考依据。

Drug Resistance Supervision of Gram-negative Pathogens in Lower Respiratory Tract Pneumonia among Senile Patients

OBJECTIVE To study the distribution and drug resistance supervision of infection pathogens of Gram-negative bacterial pneumonia in lower respiratory tract of senile patients and draft preventive and control measures.METHODS The sputum and lower respiration secretion of 368 senile patients were cultured to detect pathogens which were confirmed by routine methods.The disk diffusion test was adopted to analyze drug resistantce.RESULTS Pseudomonas aeruginosa rated the top one,reached 25.0%;the drug resistance supervision manifested that the resistant rates of Gram negative organisms to the routine drugs were high except for Haemophilus influenzae.And extensive-spectrum beta-lactamases(ESBLs) occurred with rate of 30.2%.CONCLUSIONS It is very necessary for clinical microbiology department to detect pathogens of lower respiratory tract pneumonia among senile patients and then to give reasonable advice for medicine in time.