膀胱测压检查尿流率与自由尿流率比值的临床意义

The clinical role of uroflometry in urodynamic studies and free uroflometry

目的 探讨膀胱测压检查时尿流率与自由尿流率比值在诊断尿道狭窄中的意义。 方法 对 79例患者行自由尿流率及尿动力学检查 ,其中无膀胱出口梗阻 (BOO)组 37例 ,良性前列腺梗阻组 2 7例 ,尿道狭窄组 15例。对结果进行统计学分析。 结果 37例非梗阻患者自由最大尿流率和测压检查最大尿流率分别为 (17.4± 8.1)ml/s和 (16 .7± 5 .5 )ml/s(P >0 .0 5 ) ;2 7例良性前列腺梗阻(BPO)患者分别为 (9.4± 3.4)ml/s和 (8.5± 2 .7)ml/s(P >0 .0 5 ) ;而 15例尿道狭窄患者为 (11.0± 4.5 )ml/s和 (5 .0± 2 .8)ml/s(P <0 .0 0 1) ,即尿道狭窄患者测压检查的最大尿流率仅为自由最大尿流率的45 %。 结论 当尿动力学检查尿流率值明显低于自由尿流率值时应考虑尿道狭窄的可能。在判断梗阻时应结合参考自由尿流率。

Objective To elucidate the clinical role of uroflometry in urodynamic studies and that of free uroflometry in patients with urethral stricture. Methods Free uroflometry and urodynamic studies were undertaken in 79 patients. The results were analyzed. Results The maximum flow rates (MFR) in free uroflometry and in urodynamic studies were (17.4±8.1)ml/s and (16.7±5.5)ml/s in non obstruction group( P >0.05),(9.4±3.4)ml/s and (8.5±2.7)ml/s in BPH with BOO group( P >0.05),(11.0±4.5)ml/s and (5.0±2.8)ml/s in urethral stricture group( P < 0.001 ).The MFR in urodynamic studies was about half of that in free uroflometry(45%) in those patients with urethral stricture. Conclusions Urethral stricture should be considered when free uroflometry revealed a much lower flow rate than that of urodynamic studies.Free uroflometry should be consulted when the diagnose of obstruction was made.