Hypothesis / aims of study
The vaginal wall sling involves construction of a sling from the anterior vaginal wall to provide compression and support for the mid-urethra and bladder neck. It for years, untill the introduction of synthetic slings on the market, it has been considered an excellent surgical approach to stress urinary incontinence (SUI). After the warnings issued by the FDA in 2008 and 2011 in some countries it has returned to use the vaginal wall sling. The primary aim of this study was to evaluate the long term functional outcomes of vaginal wall sling. The secondary aim was to evaluate the patient’s satisfaction.
Study design, materials and methods
This was a prospective single centre study, on patients with SUI underwent in situ vaginal sling surgery. Pre operative evaluation included: history, clinical examination, urodynamic test, UDI-6 questionnaire. All patients underwent check-ups at 1, 3, 6 and 12 months post-operatively and then annually, with the preoperative protocol except for urodynamic test. They performed uroflowmentry and at last visit they completed the PGI-I questionnaire. The sling was fashioned by making two horizontal and two vertical incisions, placed to form a rectangle, on the anterior vaginal wall. The proximal horizontal incision was at the level of the bladder neck and the distal was about 1 cm posterior to the urethral meatus. The vertical incisions completed the rectangular vaginal segment (15–20*25 mm). After preparing the sling, the proximal anterior vaginal wall edge was undermined beneath the bladder neck and the posterior bladder wall to prepare it to cover the vaginal island. After this first step, dissection was continued along the lateral edges of the sling toward the inferior pubic ramus and the endopelvic fascia was opened. Helicoidal sutures in 0-non-reabsorbable monofilament and roll of Marlex mesh were positioned on each side of the sling to ensure reinforcement. The two suprapubic sutures were tied above the rectus fascia. Statistical analysis: McNemar chi-square test.
Interpretation of results
In an era in which synthetic sling are less used, and sometimes in some countries removed from the market, the use of autologous sling is increasing more and more. However, the long-term results of autologous sling are not promising, probably for technical reasons. The high rate of long-term voiding symptoms, as well as the low cure rate of SUI compared to synthetic sling should make you think (TOT:at follow-up mean 145 months the objective cure rates was 78.9% subjective cure rate was 62.6%;TVT: at follow-up mean 139 months the objective cure rates was 80.2% subjective cure rate was 73.4% ); on the other hand, the complications of synthetic sling in expert hands are few (4% mesh exposure)