目的 :探讨排尿期尿道造影录像与尿流率同步测定 ,对诊断膀胱出口梗阻 (BOO)的意义。方法 :对有无前列腺增生两组各 30例患者分别进行非干扰性动态排尿期尿道造影录像与尿流率同步测定。两组采用改良的尿道阻力因子列线图判明BOO与非BOO。结果 :30例前列腺增生组中 2 6例诊断BOO ,4例诊断可疑BOO ;30例非前列腺增生组均诊断非BOO。结论 :动态排尿期尿道造影录像与尿流率同步测定对于诊断BOO是一种较好的、非干扰性的复合式尿动力学检测方法。 Objective: To investigate the simultaneous determination of voiding urethral imaging and urine flow rate, the diagnosis of bladder outlet obstruction (BOO) significance. Methods: 30 patients with or without benign prostatic hyperplasia were enrolled in this study. Non-interfering dynamic urination during urethral catheterization and urine flow were simultaneously measured. Two groups using modified urethral resistance factor nomogram to identify BOO and non-BOO. Results: Twenty-six cases of benign prostatic hyperplasia (BOO), four cases of suspected BOO, and thirty non-benign prostatic hyperplasia (BUN) were diagnosed as non-BOO. Conclusions: Simultaneous determination of urinary flow rate and dynamic urination during urethral catheterization is a good and non-interfering compound urodynamic method for the diagnosis of BOO.