Clinical and Urodynamic Predictors of the Q-Tip Test in Women With Lower Urinary Tract Symptoms
Purpose The Q-tip test is used to measure urethral hypermobility and can predict surgical outcomes. However, certain factors may affect the reliability of this test. Our aim was to identify independent clinical and urodynamic predictors of the results of the Q-tip test. Methods Between January 2014...
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doaj-06131d60846c470ca5a269054c1c3b342020-11-25T03:23:45ZengKorean Continence SocietyInternational Neurourology Journal2093-47772093-69312020-03-01241525810.5213/inj.1938156.078836Clinical and Urodynamic Predictors of the Q-Tip Test in Women With Lower Urinary Tract SymptomsChin-Jui Wu0Wan-Hua Ting1Ho-Hsiung Lin2Sheng-Mou Hsiao3 Department of Obstetrics and Gynecology, National Taiwan University College of Medicine and National Taiwan University Hospital, Taipei, Taiwan Department of Obstetrics and Gynecology, Far Eastern Memorial Hospital, New Taipei, Taiwan Department of Obstetrics and Gynecology, National Taiwan University College of Medicine and National Taiwan University Hospital, Taipei, Taiwan Department of Obstetrics and Gynecology, National Taiwan University College of Medicine and National Taiwan University Hospital, Taipei, TaiwanPurpose The Q-tip test is used to measure urethral hypermobility and can predict surgical outcomes. However, certain factors may affect the reliability of this test. Our aim was to identify independent clinical and urodynamic predictors of the results of the Q-tip test. Methods Between January 2014 and June 2019, 176 consecutive women with lower urinary tract symptoms who underwent the Q-tip test and urodynamic studies were included in this retrospective study. Results Multivariable regression analysis revealed that age (regression coefficient, -0.55), point Ba (regression coefficient, 4.1), urodynamic stress incontinence (regression coefficient, 9.9), maximum flow rate (Qmax) (regression coefficient, 0.13), pressure transmission ratio (PTR) at maximum urethral pressure (MUP) (regression coefficient, -0.14), and the score on the fifth question of the Incontinence Impact Questionnaire (IIQQ5; “Has urine leakage affected your participation in social activities outside your home?”; regression coefficient, -4.1) were independent predictors of the Q-tip angle, with a constant of 87.0. The following Spearman rank correlation coefficients were found between the Q-tip angle and the following variables: age, -0.38; point Ba, 0.34; urodynamic stress incontinence, 0.32; Qmax, 0.28; PTR at MUP, -0.28; and IIQQ5, -0.23. A receiver operating characteristic curve (ROC) analysis for the prediction of urodynamic stress incontinence found that the optimum cutoff for PTR at MUP was <81%, with an area under the ROC curve of 0.70. Conclusions Age, point Ba, urodynamic stress incontinence, Qmax, PTR at MUP, and IIQQ5 were independent predictors of the Q-tip angle. However, none of these could be used as effective surrogates for the Q-tip test due to their lack of a sufficient correlation.http://www.einj.org/upload/pdf/inj-1938156-078.pdfurodynamicsurinary incontinence, stressurinary bladder, overactivepelvic organ prolapse |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Chin-Jui Wu Wan-Hua Ting Ho-Hsiung Lin Sheng-Mou Hsiao |
spellingShingle |
Chin-Jui Wu Wan-Hua Ting Ho-Hsiung Lin Sheng-Mou Hsiao Clinical and Urodynamic Predictors of the Q-Tip Test in Women With Lower Urinary Tract Symptoms International Neurourology Journal urodynamics urinary incontinence, stress urinary bladder, overactive pelvic organ prolapse |
author_facet |
Chin-Jui Wu Wan-Hua Ting Ho-Hsiung Lin Sheng-Mou Hsiao |
author_sort |
Chin-Jui Wu |
title |
Clinical and Urodynamic Predictors of the Q-Tip Test in Women With Lower Urinary Tract Symptoms |
title_short |
Clinical and Urodynamic Predictors of the Q-Tip Test in Women With Lower Urinary Tract Symptoms |
title_full |
Clinical and Urodynamic Predictors of the Q-Tip Test in Women With Lower Urinary Tract Symptoms |
title_fullStr |
Clinical and Urodynamic Predictors of the Q-Tip Test in Women With Lower Urinary Tract Symptoms |
title_full_unstemmed |
Clinical and Urodynamic Predictors of the Q-Tip Test in Women With Lower Urinary Tract Symptoms |
title_sort |
clinical and urodynamic predictors of the q-tip test in women with lower urinary tract symptoms |
publisher |
Korean Continence Society |
series |
International Neurourology Journal |
issn |
2093-4777 2093-6931 |
publishDate |
2020-03-01 |
description |
Purpose The Q-tip test is used to measure urethral hypermobility and can predict surgical outcomes. However, certain factors may affect the reliability of this test. Our aim was to identify independent clinical and urodynamic predictors of the results of the Q-tip test. Methods Between January 2014 and June 2019, 176 consecutive women with lower urinary tract symptoms who underwent the Q-tip test and urodynamic studies were included in this retrospective study. Results Multivariable regression analysis revealed that age (regression coefficient, -0.55), point Ba (regression coefficient, 4.1), urodynamic stress incontinence (regression coefficient, 9.9), maximum flow rate (Qmax) (regression coefficient, 0.13), pressure transmission ratio (PTR) at maximum urethral pressure (MUP) (regression coefficient, -0.14), and the score on the fifth question of the Incontinence Impact Questionnaire (IIQQ5; “Has urine leakage affected your participation in social activities outside your home?”; regression coefficient, -4.1) were independent predictors of the Q-tip angle, with a constant of 87.0. The following Spearman rank correlation coefficients were found between the Q-tip angle and the following variables: age, -0.38; point Ba, 0.34; urodynamic stress incontinence, 0.32; Qmax, 0.28; PTR at MUP, -0.28; and IIQQ5, -0.23. A receiver operating characteristic curve (ROC) analysis for the prediction of urodynamic stress incontinence found that the optimum cutoff for PTR at MUP was <81%, with an area under the ROC curve of 0.70. Conclusions Age, point Ba, urodynamic stress incontinence, Qmax, PTR at MUP, and IIQQ5 were independent predictors of the Q-tip angle. However, none of these could be used as effective surrogates for the Q-tip test due to their lack of a sufficient correlation. |
topic |
urodynamics urinary incontinence, stress urinary bladder, overactive pelvic organ prolapse |
url |
http://www.einj.org/upload/pdf/inj-1938156-078.pdf |
work_keys_str_mv |
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