Midterm postoperative results of mid-urethral slings. Role of ultrasound in explaining surgical failures.

Patients cured of SUI had sonographically correct MUS by PF-US. Less than one-third of cases of SUI persistence or recurrence after MUS surgery could be explained by a sonographically incorrect sling. Low urethral resistance and/or UUI symptoms could help to explain the remaining failures. Complete functional and anatomic studies, including urodynamics and PF-US, should be performed before deciding on the next management strategy in patients with SUI persistence or recurrence after MUS.