A woman develops a vesico-vaginal fistula (VVF) 2 weeks after a total abdominal hysterectomy. Classic dye test (intravesical methylene blue) shows dye in the vagina. Cystoscopy localises the fistula to the trigone, 2 cm from the right ureteric orifice. What is the minimum recommended waiting period before surgical repair of a post-hysterectomy VVF?
- A 2–4 weeks to allow initial stabilisation
- B 3 months to allow inflammation and tissue oedema to fully resolve ✓
- C 6 months as tissue necrosis requires prolonged resolution
- D Immediate repair (within 72 hours) is optimal for post-surgical VVF
Explanation
The traditional recommendation for post-hysterectomy VVF repair is to wait 3 months to allow the surrounding inflammatory reaction, tissue induration, and oedema to fully resolve, enabling identification of fistula margins and healthy vascularised tissue planes for repair. Earlier repair (before 3 months) is associated with higher failure rates. The O'Conor technique (transabdominal) and Latzko technique (transvaginal partial colpocleisis for post-hysterectomy VVF) are the standard repairs. Early repair (within 48–72 hours) is acceptable only for thermal injuries (laparoscopic electrosurgery) where the fistula is an immediate complication, but post-hysterectomy fistulas are typically diagnosed after a delay.
Reference: Shaw's Textbook of Gynaecology, 17th ed.
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