尿路感染是泌尿系统受到细菌侵犯的总称。实际上尿路感染分好几种,常见有肾盂肾炎,膀胱炎和尿道炎。尿路感染的细菌入侵途径主要是逆行侵入,也就是从尿道口进入后,经尿道、膀胱、输尿管,直抵肾脏,逐步逆行向上侵犯。如果身体别处有细菌病灶,里边的细菌也会通过血液、淋巴液侵犯尿道,但这种机会远较逆行感染为少。 由于泌尿系统与性器官是近邻,男子尿道还合用作排尿与排精。因此,当泌尿系统存在感染时,随着泌尿系统器官的充血,尤其是 Urinary tract infections are the general term for urinary tract infections by bacteria. In fact, several urinary tract infections, common pyelonephritis, cystitis and urethritis. Pathogenesis of bacterial infection in urinary tract infection is mainly retrograde invasion, that is, from the urethra into the mouth, the urethra, bladder, ureter, straight to the kidney, gradually retrograde upward violations. If the body has bacterial lesions elsewhere, the bacteria inside will also invade the urethra through the bloodstream and lymph, but this chance is far less than that of retrograde infection. Because the urinary system and sexual organs are neighbors, men’s urethra also combined for urination and ejaculation. Therefore, when there is an infection in the urinary system, it is especially with the congestion of urinary system organs