尿流率是单位时间排出的尿量。临床上最重要是尿流曲线、最大尿流率和排尿时间。检查时尿量200～500毫升较准确,小于200毫升需用相对排尿阻力判断结果。现着重介绍前列腺增生症手术前后的尿流率变化。方法与结果用尿流率测量仪对34例54～75岁临床诊断前列腺增生症的病人作术前检查。病人饮水后, Urine flow rate is the amount of urine discharged per unit time. The most clinically important is the urinary flow curve, the maximum uroflow rate and urination time. Examination of urine output 200 ~ 500 ml more accurate, less than 200 ml need to use the relative urinary resistance to determine the outcome. Now highlight the changes in urinary flow rate before and after surgery for benign prostatic hyperplasia. Methods and Results Preoperative examination was performed on 34 patients with clinical diagnosis of benign prostatic hyperplasia (54-75 years old) with urine flow rate measuring instrument. After the patient drinks water,