Cystoscopy in Gynaecology
On this page
Direct answer
Before closing any pelvic operation near the bladder, the gynaecological surgeon inspects it through a cystoscope — the safety check that catches occult injuries after continence procedures and difficult dissection — while diagnostic cystoscopy serves haematuria, recurrent urinary symptoms and fistula assessment. The operative routine is a rigid 30-degree and 70-degree telescope surveying the bladder wall, trigone and ureteric orifices, with ureteric patency confirmed by watching clear jets — aided by intravenous dye or a diuretic challenge when needed. An injury missed without cystoscopy declares itself days later as urinoma, peritonitis or a vesicovaginal fistula, which is why the two-minute inspection is the cheapest insurance in pelvic surgery.
What you must remember
- Mandatory after: mid-urethral sling and Burch procedures (tape or suture perforation of bladder), any hysterectomy with difficult bladder dissection — especially repeat caesarean, endometriosis over the bladder or prior surgery — and mesh or fistula repairs.
- Technique: rigid cystoscope with 30-degree lens for the dome and posterior wall, 70-degree for the lateral walls and bladder neck; distend with saline until mucosal folds flatten; inspect systematically — dome, walls, trigone, bladder neck, both ureteric orifices.
- Ureteric patency: clear spurting jets from each orifice; if doubtful, intravenous methylene blue or indigo carmine (where available) or a furosemide challenge colours the jets — no jet after pelvic surgery near the ureter demands finding the reason before leaving theatre.
- Diagnostic uses: haematuria workup beyond urogynaecology, foreign body or stone retrieval, biopsy of bladder lesions, and fistula localisation; the flexible scope suits outpatient work while the rigid scope belongs in theatre.
- What injury looks like: tape visible through the urothelium, suture with its thread crossing the lumen, mucosal tear, or a dimple of perforation; air bubbles or fat signal entry from above.
- The delayed presentation it prevents: unrecognised cystotomy leaks urine into the peritoneum or vagina — day-2 flank pain, ileus, ascites, or constant wetness from a vesicovaginal fistula appearing around the second week.
- Double-dye test: for suspected vesicovaginal fistula in resource-limited settings — oral phenazopyridine colours urine orange while a vaginal blue tampon identifies the leak, a classic viva favourite.
- Documentation: findings, jet colour and timing, and any repair performed are recorded — the medico-legal value equals the clinical one.
The two minutes that decide the discharge
A retropubic mid-urethral sling is complete; before skin closure, cystoscopy runs through its routine: the dome, then both lateral walls, then the trigone. At the right anterior wall, a white polypropylene fibre glints through intact-looking urothelium — the tape has pierced the bladder and would have eroded within months, causing stones and recurrent infection. The tape is withdrawn and re-passed, cystoscopy repeats clean, and both jets run clear. The patient never learns how close the complication came. Now the mirror case: hysterectomy after three caesareans, bladder dissected sharply off a scarred lower segment, ureters at risk at the clamps. Cystoscopy shows the bladder intact but the left jet absent; IV dye confirms dye in the operation field — a ureteric injury caught on the table and stented, instead of a fistula or peritonitis on day three. In both theatres the logic holds: proximity to the bladder buys the scope, and skipping it is measured in reoperations.
How the exam frames it
The exam's favourite framing is the complication timeline: "A woman develops continuous urinary leakage seven days after hysterectomy — what is the diagnosis and what prevented it?" The answer pairs vesicovaginal fistula with the intraoperative cystoscopy that could have caught the cystotomy, then distinguishes surgical fistulas (early, wide excision repair) from obstetric and radiation ones (drainage first for spontaneous closure). The viva then tests the instruments: why a 70-degree lens is needed (lateral walls escape the 30-degree forward view), why jets matter (silent ureteric ligation has no other warning), and how a double-dye test works where cystoscopy is unavailable. The sling context appears as a numbers question — a few percent bladder perforation with retropubic tapes — and routine cystoscopy is the countermeasure. Finally, the outpatient divide: flexible cystoscopy for haematuria in clinic, rigid scopes wherever surgery might follow, because a session that finds a tape ends in theatre.
Frequently asked questions
Which gynaecological procedures require routine cystoscopy?
Mid-urethral slings and Burch colposuspension, and any hysterectomy or dissection with difficult bladder separation — including repeat caesarean and bladder endometriosis.
How is ureteric patency confirmed at cystoscopy?
Observing clear spurting jets from both ureteric orifices, intensified with intravenous dye or a furosemide challenge when doubt exists.
What does an unnoticed bladder injury cause?
Urine leak presenting as peritonitis, urinoma or ileus within days, or a vesicovaginal fistula with continuous leakage around the second postoperative week.
What is the double-dye test for fistula?
Oral phenazopyridine turns urine orange while a blue dye-soaked vaginal tampon localises the leak — a simple bedside alternative where cystoscopy is unavailable.
How do rigid and flexible cystoscopy differ in practice?
The flexible scope suits outpatient haematuria assessment; the rigid 30- and 70-degree scopes give the stable, irrigating platform theatre surgery requires.