Predictive value of classification systems and single fistula-related factors in surgical management of vesicovaginal fistula.

None of the classification systems allows to precisely predict VVF surgery outcome. There are several factors such as previous surgery, lack of urethral involvement, lack of circumferential defect which might suggest that PRP injection would help to preserve watertightness of the closure. The most important finding is that overweight is the most positive predicting demographic feature of surgical success. Thus we may conclude that Martius flap technique should be taken into consideration in patients with low BMI.