Characteristics Associated with Failure of Obstetric Fistula Surgery

Area of Science:

• Obstetrics and Gynecology
• Surgical Innovation
• Patient Outcomes

Background:

• Obstetric fistula, specifically vesicovaginal/urethrovaginal fistulas (VVaF/UVaF), significantly impacts quality of life.
• Surgical repair of VVaF/UVaF can be complex, with limited consensus on optimal techniques and management.
• Identifying factors predicting surgical failure is crucial for improving patient outcomes.

Purpose of the Study:

• To identify clinical and anatomical characteristics associated with failed closure of obstetric VVaF/UVaF.
• To inform strategies for optimizing surgical success rates in fistula repair.

Main Methods:

• Retrospective cohort study of 125 patients undergoing VVaF/UVaF repair at a single center in Niger (2022-2024).
• Data collected included clinical, demographic, and surgical history.
• Multivariable logistic regression analyzed factors associated with closure failure, defined as visually assessed watertight closure at discharge.

Main Results:

• Overall closure failure rate was 22.4% (28/125 patients).
• Increased number of previous surgeries (aOR 1.37) and higher degrees of tissue fibrosis (Goh's fibrosis level 2 vs 1: aOR 2.70; 3 vs 1: aOR 4.55) were independently associated with closure failure.
• No significant differences in age or parity were observed between successful and failed closure groups.

Conclusions:

• Previous surgical interventions and significant tissue fibrosis are key predictors of obstetric fistula repair failure.
• The initial surgical attempt for VVaF/UVaF closure is critical, representing the best opportunity for successful treatment.
• These findings highlight the need for meticulous surgical technique and patient selection in complex fistula cases.