Vesicovaginal Fistula Repair — How It Works, Benefits & Recovery — Procedure Guide, Recovery & Risks | MyMedicPlus

A vesicovaginal fistula (VVF) is an abnormal epithelialised communicating tract between the posterior wall of the urinary bladder and the anterior wall of the vagina, causing continuous, involuntary, and uncontrollable leakage of urine through the vagina that profoundly impairs quality of life, social participation, hygiene, sexual function, and psychological wellbeing. In high-income countries, the most common cause is gynaecological surgery — particularly total abdominal or laparoscopic hysterectomy — where the posterior bladder wall or bladder base is inadvertently injured and the injury goes unrecognised, with the fistula typically manifesting 7-14 days post-operatively as painless continuous urinary vaginal leakage. Less common iatrogenic causes include radiotherapy for cervical or uterine cancer (radiation-induced fistulas — the most difficult to repair due to ischaemic tissue), obstetric procedures, and anterior vaginal wall surgery. In low-income countries — particularly sub-Saharan Africa and South Asia — the predominant cause is obstructed labour, in which prolonged fetal head compression against the bladder base and pubic symphysis causes avascular necrosis and tissue sloughing, producing large complex obstetric fistulas. An estimated 500,000-2 million women are living with untreated obstetric fistulas globally, the majority in sub-Saharan Africa, where access to emergency obstetric care is limited. Surgical repair remains the definitive treatment for virtually all VVFs; spontaneous healing is possible only for very small fistulas (under 2-3 mm) diagnosed very early and managed with continuous bladder drainage.

Surgical repair is required for all women with a confirmed vesicovaginal fistula causing continuous urinary leakage that fails to close spontaneously. Diagnosis is established by clinical speculum examination (visualising the fistula opening on the anterior vaginal wall, identified as a discrete hole), the dye test (instilling methylene blue into the bladder via catheter and confirming blue staining of a vaginal swab), cystoscopy (identifying the fistula orifice on the bladder floor and its relationship to the ureteral orifices — critical for surgical planning), and upper tract imaging (IVU or CT urogram) to exclude a concurrent ureterovaginal fistula. Timing of repair is critically important: historically, surgeons delayed repair for 3-6 months after hysterectomy fistulas to allow tissue inflammation and oedema to fully subside. Modern evidence — particularly from centres with high fistula volume experience — supports early repair at 3-4 weeks for small, clean, non-radiated iatrogenic fistulas, as immediate tissue quality is adequate and early repair reduces patient suffering and social morbidity. Radiation-induced VVFs require the standard 6-12 month delay to allow maximum vascular recovery before repair, which even then carries reduced success rates due to the poorly vascularised tissue bed. Women who are pregnant at the time of VVF diagnosis require delivery by caesarean section before repair; repair is delayed until at least 3 months postpartum.

The surgical approach — transvaginal, transabdominal (open or laparoscopic/robotic), or combined — is selected based on fistula size, location (proximity to ureteral orifices, bladder trigone), vaginal access, history of prior repair, radiation exposure, and surgeon training. Transvaginal repair (Latzko partial colpocleisis or layered closure) is the preferred approach for most post-hysterectomy iatrogenic fistulas: the vaginal mucosa around the fistula is infiltrated with dilute adrenaline solution to reduce bleeding and facilitate hydrodissection. A circumferential incision is made around the fistula opening and the vaginal epithelium mobilised off the underlying vesicovaginal fascial septum. The fistula tract is excised or freshened to healthy bleeding margins. The bladder muscularis is closed transversely with absorbable 2-0 polyglactin (Vicryl) sutures in two layers, ensuring the suture lines are not overlapping. The vaginal mucosa is closed as a separate layer, creating a tension-free three-layer repair. For larger or recurrent fistulas, a tissue interposition graft — the Martius flap (bulbocavernosus fat pad with its vascular pedicle from the labium majus), omentum, or peritoneal flap — is brought between the bladder and vaginal suture lines to improve vascularity, reinforce the repair, and prevent suture line overlap. Transabdominal repair is preferred for fistulas in the bladder dome, fistulas with close proximity to the ureteral orifices requiring ureteral reimplantation, large post-radiation fistulas, or failed prior transvaginal repairs. Ureteral stents are placed prophylactically in all cases where the fistula or repair is within 2 cm of the ureteral orifices to protect the ureters during dissection and closure.

Primary VVF repair achieves complete fistula closure and restoration of normal continence in 90-95% of uncomplicated small post-hysterectomy iatrogenic fistulas operated by experienced surgeons. Obstetric fistula repair in dedicated specialist centres achieves fistula closure in 80-90% of first-time repairs, with complete continence restoration in 60-75% — the remainder may require additional procedures or management of concurrent urethral damage. Fistula closure dramatically restores quality of life: women regain continence, return to social and family activities, resume sexual intercourse, and experience significant improvement in psychological wellbeing, stigma burden, and social reintegration. The Martius flap interposition graft substantially improves success rates for complex, recurrent, or large fistulas compared to two-layer primary closure alone, by providing a well-vascularised biological barrier between the repaired layers. Radiation-induced fistulas — the most challenging category — achieve closure in 55-70% of cases even at specialist centres, due to the compromised tissue vascularity. Repeat repair can be attempted for failed primary repairs after an adequate healing interval of 3-6 months.

Fistula recurrence is the primary complication, occurring in 5-15% of cases for uncomplicated post-hysterectomy fistulas and rising to 20-40% for obstetric fistulas, previously failed repairs, large complex defects, and radiation-induced fistulas. Recurrence manifests as return of continuous vaginal urinary leakage at 10-21 days after catheter removal, typically confirmed by recurrent cystoscopy. Ureteral injury — including ureteral kinking, occlusion, or inadvertent ligation — is a serious risk when operating near the trigone, with potential consequences of hydroureteronephrosis, renal impairment, and ureterovaginal fistula; prophylactic ureteral stenting and careful dissection under magnification minimise this risk. Persistent stress urinary incontinence after successful fistula closure occurs in 10-15% of cases, particularly after obstetric fistula repair where there is co-existing urethral damage, and requires further incontinence surgery. De novo bladder overactivity with urgency incontinence may persist in 10-20% after repair as the bladder adapts to normal filling again after continuous drainage. Wound infection and haematoma formation in the repaired space occur in 3-5% of cases. Vaginal stenosis — narrowing of the vaginal canal — can develop after extensive transvaginal dissection, particularly in post-menopausal women with atrophic mucosa, and may require vaginal dilators or secondary surgical correction.

A urethral catheter — and often a suprapubic catheter as well — is maintained for 14-21 days after VVF repair to keep the bladder completely decompressed, eliminating tension on the suture lines during the critical healing phase. Continuous free drainage (never clamping the catheter) is mandatory throughout this period. Strict bed rest is not required, but vigorous physical activity is restricted for 2-4 weeks. Oral fluid intake is encouraged at 2-3 litres daily to maintain dilute urine, reducing bladder irritation. A cystogram (contrast x-ray of the bladder) is performed at 10-14 days to confirm radiological closure of the fistula before catheter removal is considered — the catheter must not be removed early if any leakage remains on imaging. After successful catheter removal, light activities resume gradually; heavy lifting, straining, and sexual intercourse are deferred for 6-8 weeks to protect the repair. Topical oestrogen cream applied daily to the vaginal vault for 4-8 weeks after catheter removal in post-menopausal women promotes epithelial healing and reduces the risk of vaginal stenosis. Regular follow-up at 6 weeks, 3 months, and 12 months assesses continence status, vaginal healing, and upper tract integrity. Women who have undergone obstetric fistula repair require counselling on future delivery planning — elective caesarean section is strongly advised for all subsequent deliveries to prevent recurrence from repeat labour trauma.