Zhao Shan-Chao, Zheng Shao-Bin, Tan Wan-long, Mao Xiang-ming, Zhang Peng, Huang Zhao-ming, Zhang Hui-jian, Zuo Yi
Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China.
Zhonghua Nan Ke Xue. 2007 Aug;13(8):710-2.
To investigate the effects of transurethral catheterization on the uroflow rate in the pressure-flow study of patients with benign prostatic hyperplasia (BPH).
Thirty-nine men with BPH underwent free uroflowmetry and pressure-flow analysis respectively. With an 8 F urethral catheter, the standard pressure-flow variables such as the maximum flow rate, detrusor pressure at the maximum flow rate and so on were recorded. The free maximum flow rate and the maximum flow rate with transurethral catheterization were statistically analyzed.
The maximum voided volumes of the free uroflowmetry group and the pressure-flow study group were (209.23 +/- 56. 56) ml and (210.33 +/- 62.02) ml respectively (P > 0.05). The free maximum flow rate was (8.61 +/- 2.80) ml/s, and the maximum flow rate with transurethral catheterization-was (7.39 +/- 3.01) ml/s (P < 0.05). When the patients were divided into seven grades of bladder outlet obstruction (BOO) according to the Schäfer nomogram, the free maximum flow rate and the maximum flow rate with transurethral catheterization with Grade 0-I of BOO were (12.56 +/- 1.57) ml/s and (10.95 +/- 2.51) ml/s, and those of Grade II were (9.35 +/- 0.76) ml/s and (8.41 +/- 1.23) ml/s respectively. For Grades III, IV and V-VI , the two maximum flow rates were (7.88 +/- 1.21) ml/s and (6.37 +/- 0.59) ml/s, (6.54 +/- 1.93) ml/s and (5.55 +/- 2.48) ml/s, and (6.01 +/- 2.10) ml/s and (4.84 +/- 2.89) ml/s, respectively, all with significant difference in between (P < 0.05).
The 8 F urethral catheter has a significant effect on the maximum uroflow rate in the pressure-flow study and this effect is correlated with the grade of BOO.
探讨经尿道插管对良性前列腺增生（BPH）患者压力 - 流率研究中尿流率的影响。
39例BPH男性患者分别接受自由尿流率测定和压力 - 流率分析。使用8F尿道导管记录标准压力 - 流率变量，如最大尿流率、最大尿流率时的逼尿肌压力等。对自由最大尿流率和经尿道插管后的最大尿流率进行统计学分析。
自由尿流率测定组和压力 - 流率研究组的最大排尿量分别为（209.23±56.56）ml和（210.33±62.02）ml（P>0.05）。自由最大尿流率为（8.61±2.80）ml/s，经尿道插管后的最大尿流率为（7.39±3.01）ml/s（P<0.05）。根据Schäfer列线图将患者分为七个膀胱出口梗阻（BOO）等级时，BOO 0 - I级的自由最大尿流率和经尿道插管后的最大尿流率分别为（12.56±1.57）ml/s和（10.95±2.51）ml/s，II级分别为（9.35±0.76）ml/s和（8.41±1.23）ml/s。III级、IV级和V - VI级的两种最大尿流率分别为（7.88±1.21）ml/s和（6.37±0.59）ml/s、（6.54±1.93）ml/s和（5.55±2.48）ml/s、（6.01±2.10）ml/s和（4.84±2.89）ml/s，两两之间均有显著差异（P<0.05）。
8F尿道导管对压力 - 流率研究中的最大尿流率有显著影响，且这种影响与BOO等级相关。
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