Aim: This study aimed to examine the correlations between specific urethral function parameters observed in urodynamic testing and selected urethral characteristics evaluated by pelvic floor ultrasonography. Additionally, the presence of urethral funneling during straining was evaluated in female patients referred for surgical treatment of stress urinary incontinence. Material and methods: A retrospective study was conducted on 192 female patients referred for surgical treatment of stress urinary incontinence with the use of retropubic tension-free vaginal tape. Maximum urethral closure pressure and functional urethral length were evaluated urodynamically during resting profilometry. Ultrasound measurements, along with the assessment of funneling, were performed as part of the pelvic floor examination, following the technique described by Kociszewski. Patients with clinically significant pelvic organ prolapse, a history of anterior compartment surgery, prior radiotherapy, or symptoms of overactive bladder were excluded from the analysis. Results: The values obtained from urodynamic and ultrasound examinations were evaluated statistically. No correlation was identified between the analyzed urodynamic and ultrasound parameters. Long urethral funneling was confirmed in all patients with stress urinary incontinence assessed as eligible for the placement of tension-free vaginal tape. Conclusions: The results indicate that urodynamic and ultrasound examinations assess distinct aspects of urethral anatomy and function, and therefore their findings cannot be used interchangeably. Long urethral funneling assessed during pelvic floor ultrasonography was noted in all patients with clinically and urodynamically confirmed stress urinary incontinence

stress urinary incontinence; urodynamic examination; pelvic floor ultrasonography; urethral funneling