Q-tip test offers a simple approach for identifying urethral hypermobility. Considering surgical treatment, stress urinary incontinence (SUI) must be classified and the contribution of intrinsic sphincter deficiency (ISD) and/or urethral hypermobility must be determine. We believe there's a correlation between abdominal leak point pressure (ALPP) and urethral mobility degree, and the aim of this study is to explore it using Q-tip. We conducted a prospective study, between years 2014 and 2016. Females over 18 years presenting with signs and symptoms of SUI according to the 2002 ICS Standardization of Terminology were included. Assessment was made with the International Consultation on Incontinence Questionnaire Short Form (ICIQ-SF), the Q-tip test and invasive urodynamics. Urethral mobility (UM) and ALPP were analyzed. We built two composite variables based on reported risk factors for ISD, defined as composite variable A (equal to a Q-tip test < 30° AND ICIQ-SF ≥ 10 points) and composite variable B (equal to low urethral mobility AND/OR hypoestrogenism AND/OR history of radiotherapy AND/OR previous pelvic surgery). Correlation analyzes were made according to the type of variable. A total of 221 patients were included. Incontinence was rated as moderate and severe by 65.3% and 6.8%, respectively. The analysis showed a 61.75%, 51.61% and 70.6% agreement between ALPP and UM, ALPP and composite variable A and ALPP and composite variable B respectively. Correlation and concordances were low (r = 0.155, r_s = - 0.053 and r_s = - 0.008), (rho_c = 0.036, k = 0.116 and k = 0.016). Neither the degree of UM, nor the composite variables, correlate or agree with urethral function tests in UDS, suggesting that the ALPP cannot be predicted using the Q-tip test or the ICIQ-SF for classifying patients with SUI.
Scientific reports. 2020 Dec 02*** epublish ***
Daniela Robledo, Laura Zuluaga, Alejandra Bravo-Balado, Cristina Domínguez, Carlos Gustavo Trujillo, Juan Ignacio Caicedo, Martín Rondón, Julián Azuero, Mauricio Plata
Department of Urology, Hospital Universitario Fundación Santa Fe de Bogotá and Universidad de Los Andes School of Medicine, Carrera 7 No. 118-09, Unidad Renal, piso 3, 110111, Bogotá, D.C., Colombia., Department of Clinical Epidemiology and Biostatistics, Pontificia Universidad Javeriana, Bogotá, D.C., Colombia., Department of Urology, Hospital Universitario Fundación Santa Fe de Bogotá and Universidad de Los Andes School of Medicine, Carrera 7 No. 118-09, Unidad Renal, piso 3, 110111, Bogotá, D.C., Colombia. .