Elsevier

Urology

Volume 73, Issue 5, May 2009, Pages 981-986
Urology

Female Urology
Risk Factors Affecting Cure After Mid-urethral Tape Procedure for Female Urodynamic Stress Incontinence: Comparison of Retropubic and Transobturator Routes

https://doi.org/10.1016/j.urology.2009.01.004Get rights and content

Objectives

To identify the risk factors affecting cure after the tension-free vaginal tape procedure (TVT) or transobturator tape procedure (TOT).

Methods

A total of 121 women with urodynamically proved stress incontinence underwent TVT (n = 61) or TOT (n = 60). We analyzed all data with univariate and multivariate logistic regression analyses.

Results

Univariate analysis revealed that a larger postvoid residual urine volume, greater pad weight test, and lower maximal flow rate were associated with a greater risk of failure to be cured after TVT. A lower maximal urethral closure pressure (MUCP) was associated with a greater risk of failure after the TOT procedure. With additional analysis, we found that a MUCP of ≤40 cm H2O (odds ratio [OR] 9.21, P = .004) was associated with a significantly greater risk of failure to be cured after the TOT procedure but not a MUCP of ≤50 cm H2O (OR 2.24, P = .21). Multivariate analysis revealed that preoperative detrusor overactivity was an independent risk factor affecting cure after TVT (OR 113.1, 95% confidence interval 1.84-6592.77, P = .02) or TOT (OR 23.7, 95% confidence interval 1.63-344.53, P = .02), and MUCP ≤40 cm H2O (OR 8.34, 95% confidence interval 1.52-45.65, P = .01) was another risk factor for TOT.

Conclusions

The risk factors affecting cure after mid-urethral tape procedures were preoperative detrusor overactivity for TVT and TOT and MUCP ≤40 cm H2O for TOT.

Section snippets

Material and Methods

All female patients with urodynamically proven stress incontinence (USI) who had completed the preoperative urodynamic studies and pad testing and underwent the TVT procedure (using TVT from Ethicon, Somerville, NJ) or the TOT procedure (using Monarc TOT, American Medical Systems, Minnetonka, MN) at National Taiwan University Hospital from January 2004 to February 2007 were studied in a retrospective fashion. All procedures conformed to those described in previous reports1, 2, 12 and were

Results

A total of 61 patients who underwent the TVT procedure and 60 patients who underwent the TOT procedure were included in the present study. All patients (n = 121) were followed up at our hospital for >12 months. Except for the maximal urethral closure pressure (MUCP), operating time, and symptoms of voiding dysfunction (ie, straining to void [n = 5], incomplete emptying [n = 4]), no significant differences were found in the baseline clinical, urodynamic, or perioperative characteristics between

Comment

Using the stress cough test and subjective report of urine leakage, the cure rate in the TVT group was comparable to that of the TOT group (82.0% vs 78.3%, P = .57) despite the lower preoperative MUCP value for the TOT group. The cure rates for both procedures used in this study were within the previously reported ranges.3, 4, 5, 6

In the present study, a MUCP of ≤40 cm H2O was an independent risk factor for the failure to be cured after the TOT procedure, but not after the TVT procedure.

Conclusions

The presence of preoperative detrusor overactivity was an independent risk factor for the failure to be cured after TVT procedure. The presence of preoperative detrusor overactivity and a MUCP of ≤40 cm H2O were independent risk factors for the failure to be cured after the TOT procedure.

Acknowledgment

To Chi-ling Chen, Ph.D., Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University for her statistical assistance in this study.

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