Results: Gram negative bacilli were the superiority bacteria (58.98%), mainly Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Staphylococcus aureus, True fungu.

• 结果：革兰阴性杆菌占优势(58.；98%25)，主要为大肠埃希菌、铜绿假单胞菌、肺炎克雷伯菌、凝固酶阴性葡萄球菌、金黄色葡萄球菌、真菌等。