尿路感染是由致病细菌直接引起的炎症,它的治疗主要依靠抗菌药物。由于致病菌大部分(50～80%)是革兰阴性细菌,故治疗通常首选对革兰阴性细菌较为有效的药物。尿路感染分为上尿路感染和下尿路感染,其临床表现虽然相似,但治疗方案、预后判断却 Urinary tract infection is a direct inflammation caused by pathogenic bacteria, and its treatment relies mainly on antimicrobial agents. As most of the pathogens (50-80%) are Gram-negative bacteria, therapies are generally preferred drugs that are more effective against Gram-negative bacteria. Urinary tract infection is divided into upper urinary tract infection and lower urinary tract infection, although its clinical manifestations are similar, but the treatment program, the prognosis is