Application of perineal ultrasound measurement and urodynamic study in the diagnosis and typing of stress urinary incontinence ultrasound and urodynamic study.

To explore the value of perineal ultrasound and urodynamic study in the clinical diagnosis with the morphological and functional changes and evaluation of clinical type in female patients with stress urinary incontinence (SUI).The records of 64 female patients with SUI were reviewed. Fifty females with urinary frequency but with no SUI symptoms served as controls. All of them underwent ultrasound and urodynamic measurement. P<0.05 was considered statistically significant.The maximum flow rate (Q max) was significantly higher in the patients than in the control group, but the maximal urethral pressure (MUP), maximal urethral closing pressure (MUCP) and functional urethral length (FUL) were significantly lower than in the control group. Ultrasound measurements showed that the rotation angle and movement of urethrovesical junction, funneling of bladder neck and posterior urethrovesical angle (PUVA) at rest and during straining were greater in patients than in the control group. Patients with higher abdominal leak point pressure (ALPP) had higher maximal urethral closing pressure (MUCP), greater rotation angle and movement of urethrovesical junction. Patients with higher MUCP had higher ALPP, greater rotation angle and movement of urethrovesical junction.The urodynamic study and perineal ultrasound have a great significance in the diagnosis and typing of SUI.