老年男性下尿路症状伴逼尿肌过度活动患者临床及尿动力学特点分析

目的 探讨老年男性下尿路症状伴逼尿肌过度活动(DO)患者临床和尿动力学特点.方法 中重度下尿路症状老年男性患者227例,根据尿动力学检查将患者分为2组,DO组126例,无DO组101例,对2组患者前列腺体积、PSA、尿流率、残余尿、IPSS和尿动力学参数进行比较.结果 2组患者年龄分别为(71.1±8.9)和(66.3±9.4)岁,DO组高于无DO组(P＜0.05);年龄校正后,2组患者前列腺体积分别为(44.3±18.3)和(46.9±17.5)ml,PSA(2.6±1.5)和(2.9±1.3)ng/ml,最大尿流率(同时用排尿量校正)(6.6±4.3)和(8.1±4.9)ml/s,残余尿为(132.5±114.6)和(142.l±129.7)ml,2组间差异无统计学意义(均P>0.05).尿动力学检查,2组患者膀胱初感觉分别为(105.0±42.4)和(130.6±50.5)ml,膀胱顺应值(25.4±14.3)和(36.7±14.3)ml/cm H2O,最大膀胱容量(262.8±106.7)和(349.1±75.8)ml,单次排尿量(130.3±89.4)和(208±101.4)ml,最大逼尿肌收缩压(66.9±38.1)和(53.3±24.1)cm H2O,LinPURR 3.1±1.7和2.4±1.6,2组间各项指标差异均有统计学意义(均P＜0.05).结论 高龄、严重膀胱出口梗阻患者易出现DO;中重度下尿路症状患者,非侵入性临床参数无法判断患者是否存在DO;DO患者尿动力特点为膀胱敏感性增加、顺应性下降、最大逼尿肌收缩压增高、膀胱功能容量减少和单次排尿量减少.

Change of clinical and urodynamic parameters in the patients with lower urinary tract symptom caused by detrusor overactivity

Objective To study the change of clinical and urodynamic parameters in the patients with lower urinary tract symptom (LUTS) caused by detrusor overactivity (DO). Methods Two hundred and twenty-seven patients with LUTS underwent clinical evaluation from October 2006 to December 2008, including Prostate Volume (PV), International Prostate Symptom Score (IPSS), Peak Flow rate (PF) and Residual Urine (RU) measurement. Pressure flow studies were performed. The detrusor overactivity was recorded to classify the patients into 2 groups, DO group and none DO group. The clinical and urodynamic parameters were compared between the two groups. Results Mean patient age was 70 years (range 52 to 89). According to the urodynamic results, there were 126 patients in DO group and 101 patients in none DO group. The mean patients age was older in DO group than the none DO group(P＜0.05). Adjusted by age, the PV, PF, and RU were no different between the two groups(P>0.05). The mean first sensation of bladder, bladder compliance, cystometric capacity, bladder outlet obstruction parameters, single voiding volume and max detrusor pressure during contraction were different between the two groups(P＜0.05). Conclusions The main risk factors of DO are the ageing and BOO. The non invasive parameters such as PV、 PF、 and RU could not be used to judge DO. The changes of urodynamic parameters caused by DO were hyperaesthesia of bladder、lower bladder compliance、 higher max detrusor pressure and lower max cystometric capacity. This study emphasis the importance of the urodynamic studies in the aged patients with LUTS.