[31] Effect of urodynamic urethral catheter on uroflowmetry parameters: A prospective study
Objective: To investigate the effect of urodynamic urethral catheter on uroflowmetry (UFM) parameters, as urodynamic studies (UDS) are an integral part in assessing voiding symptoms in both genders and its settings and components are points of debate for possible effects on results that sometimes va...
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| Autores principales: | , , , , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
Taylor & Francis Group
2018
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/948b98c1050f4122bb5d11142cafc367 |
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| Sumario: | Objective: To investigate the effect of urodynamic urethral catheter on uroflowmetry (UFM) parameters, as urodynamic studies (UDS) are an integral part in assessing voiding symptoms in both genders and its settings and components are points of debate for possible effects on results that sometimes vary from preliminary diagnoses, particularly the urethral or vesical catheters used in filling and voiding cystometry and their effect on UFM parameters. Methods: We prospectively enrolled 150 patients undergoing UDS for established voiding symptoms from January 2016 to March 2018. Exclusion criteria were pre-UDS voided volume of <150 mL and/or inability to void during UDS with the catheter in place. Biometric data and clinical history were collected. Free UFM preceded the UDS. A double-lumen 8-F air-charged urethral catheter was inserted to measure intra-vesical pressure and for filling and voiding cystometry. Parameters of free UFM were compared with that of voiding cystometry using t-tests. Results: The study included 105 eligible patients (mean age 55 years), 54% of which were females. Urge urinary incontinence was most frequent form of leak (28 patients) and 69% of strips showed detrusor overactivity. Statistically significantly better results were observed between pre-UDS UFM and pressure-flow UFM for the mean values of maximum urinary flow (Qmax; +4.33 mL/s, P < 0.001), average flow (+1.95 mL/s, P< 0.05), voiding time (-16.6 s, P< 0.001), and time to Qmax (-6.6 s, P< 0.001), but not post-void residual volume (PVR; 12.2 mL, P = 0.16) and percentage PVR of cystometric capacity (0.55%, P = 0.7). Time to Qmax becomes insignificant when compared amongst males only (P = 0.2), whilst all PVR assessments become significant amongst females alone (P< 0.05). Analysis was repeated including those who voided ⩾120 mL (120 patients) on pre-UDS UFM and yielded results of similar significance. Conclusion: The insertion of a urethral catheter has a significant effect on UFM parameters in patients regardless of gender. Pre-UDS UFM studies are important to identify such effects that may influence the final diagnosis. |
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