Recognise, prevent and manage intra-operative complications of gynaecological surgery, including haemorrhage and visceral injury

In one line

Intra-operative haemorrhage and visceral (ureter, bladder, bowel) injury are largely anatomical accidents — they happen at predictable steps because of where the structures lie — so the consultant skill is to operate in a way that prevents them, to recognise them on the table where the damage is repairable in one sitting, and to know that the disaster in almost every case is not the injury itself but the injury discovered three days later in a sick patient on the ward.

This chapter assumes the groundwork laid in the sibling Final chapters on perioperative care and consent, on choice of surgical route and energy device, and on endoscopic-entry complications; it takes those as read and concerns the surgeon who has to get out of trouble. One principle runs through everything below — simple to state and hard to live by: when in doubt, look. A negative cystoscopy costs ten minutes; a missed ureteric ligation costs a kidney and a medicolegal file.

Mechanism & pathophysiology

Every visceral injury in pelvic surgery is an injury of proximity — the bladder, the ureter and the rectosigmoid are all within a centimetre or two of structures the gynaecologist must divide, and each has a signature danger point.

The ureter is the structure that defines pelvic surgery. It runs retroperitoneally, crosses the pelvic brim at the bifurcation of the common iliac artery (just medial to the ovarian vessels in the infundibulopelvic ligament), descends on the pelvic sidewall, and then makes its three classic crossings: it passes under the uterine artery ("water under the bridge") roughly 1.5 cm lateral to the cervix, runs through the cardinal ligament close to the uterosacral insertion, and finally angles medially to enter the bladder at the trigone, tunnelling beneath the vaginal angle. Each crossing is a place a clamp, a stitch or a sealing device can catch it. So the high-risk steps fall out of the anatomy directly: dividing the infundibulopelvic (ovarian) ligament high (the ureter is just medial and deep — the danger in an oophorectomy for a fixed adnexal mass), clamping the uterine pedicle at hysterectomy (the ureter is 1–2 cm below and lateral, drawn closer by traction and by a bulky or fibroid uterus that distorts the vesicouterine and lateral spaces), taking the uterosacral/cardinal complex, and securing the vaginal angles at the end of a hysterectomy. Endometriosis, a broad-ligament fibroid, prior caesareans, malignancy or pelvic inflammatory disease all pull the ureter out of its expected line and shorten the safety margin — which is why distorted anatomy, not the routine case, generates the injuries.

The ureter can be injured in five mechanistically distinct ways, and they behave differently:

• Transection — cleanly cut; the most obvious, often seen at once if you are looking.
• Ligation/kinking — caught in a pedicle suture; the kidney obstructs and the patient presents with loin pain or rising creatinine days later.
• Crush — a clamp applied and released; may recover or may necrose and leak.
• Thermal — a lateral spread injury from monopolar diathermy or a vessel-sealing device used too close; the danger is delayed, because the coagulated wall looks intact at the time and only sloughs and leaks 5–14 days later as the necrosis declares itself. This is the injury that defines the energy era of MIS.
• Devascularisation — over-skeletonising the ureter strips its delicate adventitial blood supply; the segment necroses and breaks down even though it was never directly grasped.

The bladder sits on the front of the uterus and cervix, separated by the vesicouterine fold. It is injured when the bladder flap is developed at hysterectomy or reflected at caesarean section, especially in the scarred, densely adherent plane of a woman with previous caesareans, and at the anterior vaginal wall during vaginal hysterectomy or anterior repair. A full bladder is a bigger target, which is why it is drained. Bladder injury is, by contrast with ureteric injury, usually a clean incision recognised at operation — and that single fact (injury you can see versus injury you cannot) drives the entire difference in how the two are managed.

The bowel is injured because of adhesions. The rectosigmoid is tethered into the pouch of Douglas in endometriosis, prior surgery, sepsis or radiation; small bowel adheres to the anterior abdominal wall under a previous midline scar (the trocar/Veress injury) or is caught during adhesiolysis. The two failure modes again differ by recognisability: a sharp enterotomy during dissection is seen and dealt with; a thermal bowel injury from electrosurgery is the treacherous one — a small area of coagulated serosa that looks trivial, then perforates 3–7 days later into a delayed faeculent peritonitis. The coagulation injury is always larger than it looks because lateral thermal spread devitalises a margin beyond the visible mark.

Finally, positioning injures nerves by stretch or compression while the patient is anaesthetised and cannot protect herself: the common peroneal nerve against the lithotomy stirrup at the fibular head (foot drop), the femoral nerve under a self-retaining retractor blade pressing on the psoas or from extreme hip flexion/abduction (weak knee extension, absent knee jerk, numb anterior thigh), the obturator nerve on the pelvic sidewall during node dissection or deep endometriosis surgery (weak thigh adduction). These are prevented at the start of the operation, not managed at the end.

Assessment

The assessment that matters here is intra-operative, and it is active, not passive — you go looking for the injuries rather than waiting for them to announce themselves.

• For haemorrhage: quantify it honestly (drapes, suction, swabs — visual estimation under-reads by ~30–50%), watch the physiology not just the field (a rising pulse and falling pulse pressure precede a falling blood pressure; in a fit young woman the blood pressure holds until late and then falls fast), and call for help early rather than at the point of collapse. Communicate the loss to anaesthesia and theatre as a number, activate help while you still have control of the field, and decide whether this is a problem you can suture or one that needs packing and a second pair of senior hands.
• For the ureter: the cheapest test is to look — open the retroperitoneum, identify the ureter on the pelvic sidewall and watch it peristalse; peristalsis confirms it is alive and in continuity, but does not exclude a thermal or partial injury. Where any doubt remains, cystoscopy with intravenous indigo carmine or methylene blue (or a dilute fluorescein) confirms a brisk jet of dye from each ureteric orifice — bilateral jets are the operative reassurance that both ureters are patent at that moment. No jet, or a delayed/dribbling jet, means an obstructed or injured ureter until proven otherwise. (Indigo carmine has had recurrent global supply problems; methylene blue or simply pushing fluids plus furosemide to provoke a clear-urine jet are the practical substitutes.)
• For the bladder: suspect it when you see gas or blood in the catheter bag, when the Foley balloon comes into view, or when the field will not stay dry low down. Confirm by retrograde instillation of dilute methylene blue (or sterile milk) through the catheter and watching for extravasation; cystoscopy maps the injury relative to the trigone and ureteric orifices, which determines the repair.
• For the bowel: inspect the full length of any adhesiolysis bed and the serosa over any area touched by energy; run the small bowel if there is any suspicion. A serosal coagulation mark that you are unsure about is treated as a full-thickness injury, because the alternative is a ward perforation.
• Delayed presentation is the assessment you must also own, because not every injury is caught: post-operative fever, ileus, abdominal pain and a rising creatinine suggest a urinoma or a missed enterotomy; watery vaginal discharge after a hysterectomy is a fistula until excluded; flank pain with hydronephrosis on ultrasound is an obstructed ureter. The lesson the timing teaches is that the easy version of every one of these problems was available on the table.

Management

Organise the response immediate (on the table) → ongoing (the repair and its protection) → long-term (surveillance, function, disclosure). The single most important management decision is the one already named: recognise and repair now, because a one-stage intra-operative repair in a stable patient with good tissues has a far better outcome than a delayed reoperation in a septic, oedematous pelvis.

Major intra-operative haemorrhage — a staged escalation

Treat catastrophic pelvic bleeding as a drill that escalates from least to most invasive, never freezing at one rung:

1. Direct control + resuscitation in parallel. Apply pressure/packing to the bleeding point, get good light and suction and an assistant, and do not blindly clamp into a pool of blood near the sidewall — that is how the ureter and the iliac vein are injured turning a venous ooze into an arterial disaster. While you control the field, anaesthesia resuscitates: two large-bore lines, warmed balanced fluid, cross-matched blood, and activate the massive transfusion protocol if loss is brisk and ongoing.
2. Massive transfusion + tranexamic acid. The contemporary massive-transfusion approach is fixed-ratio red cells:plasma:platelets (commonly ~1:1:1) guided where available by point-of-care viscoelastic testing (TEG/ROTEM), with active warming and correction of the lethal triad (hypothermia, acidosis, coagulopathy) and of ionised calcium. Give tranexamic acid 1 g IV early. The strongest randomised evidence for early TXA in this physiology is the obstetric WOMAN trial (death-due-to-bleeding cut ~31% when given within 3 hours of PPH onset, with no thrombotic excess) and the trauma CRASH-2 line of work; extrapolating it to non-obstetric surgical haemorrhage is a reasonable, guideline-endorsed read-across rather than direct surgical RCT proof, and it is cheap, available and time-critical — give it early or not at all.
3. Surgical haemostasis, then devascularisation. Suture-ligate or clip the identifiable vessel. When diffuse pelvic-sidewall bleeding cannot be pinpointed, bilateral internal iliac (hypogastric) artery ligation reduces pelvic pulse pressure (it does not produce ischaemia because of the rich collateral supply, which is also why it is less reliable than expected); ligate the anterior division 2.5 cm distal to the bifurcation, having positively identified and protected the ureter and the external iliac vessels first.
4. Pelvic packing + damage control. If bleeding continues and the patient is becoming coagulopathic and unstable, pack the pelvis firmly, close (or temporarily cover) the abdomen and stop — damage-control surgery: take her to ICU to be warmed and corrected, and bring her back at 24–48 hours to remove the packs. A live, coagulopathic patient with packs in is a better outcome than a "definitive" operation finished on a patient who arrests on the table.
5. Interventional radiology. Where available, selective arterial (uterine/internal iliac) embolisation is the elegant alternative for ongoing or recurrent pelvic bleeding, particularly venous or sidewall bleeding hard to reach surgically, and can avoid a relaparotomy. In most of the SA public sector IR is a tertiary, often after-hours-limited resource, so the honest plan is to know it exists and refer early where it is reachable, but to be entirely capable of internal iliac ligation and pelvic packing when it is not. Hysterectomy is the final answer when the uterus is the source and childbearing is complete or already lost.

Ureteric injury — repair principle follows the level and mechanism

The repair is dictated by where the ureter is injured and by how. Two anatomical rules carry most cases: injuries of the lower third (pelvic) ureter are best managed by reimplantation into the bladder (ureteroneocystostomy) rather than primary end-to-end repair, because the distal segment is poorly vascularised and the bladder can be brought up to it; injuries of the upper/mid ureter with healthy ends and no tension are repaired end-to-end (ureteroureterostomy) over a stent.

• Recognised on the table, clean transection: repair immediately. Lower third → ureteroneocystostomy, adding a psoas hitch (anchoring the bladder dome to the psoas tendon to bridge a short gap) or a Boari flap (a tube fashioned from a bladder-wall flap to bridge a longer gap) for tension-free reach. Mid/upper third → spatulated tension-free end-to-end anastomosis. Stent across the repair (typically a double-J for ~6 weeks), drain the area, and document a watertight, tension-free, well-vascularised, mucosa-to-mucosa repair — the four principles that decide whether it heals or leaks.
• Ligation recognised on the table: if a suture is removed promptly and the ureter is viable and peristalsing, a stent may suffice; if the wall is crushed or devitalised, resect and repair.
• Thermal injury: never trust the visible margin — resect back to bleeding, healthy tissue and repair, because the coagulation necrosis extends beyond the mark and a "repaired" thermal injury that was not resected widely will leak days later.
• Recognised late (the urinoma/fistula presentation): the early window for primary repair is roughly the first few days; after that, the inflamed, oedematous pelvis is hostile, so the standard is to temporise — a JJ ureteric stent if it can be passed, or percutaneous nephrostomy to divert and decompress the kidney — and to perform definitive reconstruction after ~6–12 weeks once inflammation has settled. Salvaging renal function with early diversion is the priority; the elegant reconstruction can wait.

When the anatomy is hostile or the surgeon is not trained in ureteric reconstruction, the correct intra-operative decision is to call urology / stabilise and refer, not to attempt an unfamiliar repair badly.

Bladder injury — the forgiving one, if recognised

Bladder injury, recognised on the table, has an excellent outcome, which is exactly why recognising it matters so much.

• Repair in two layers with absorbable suture (a mucosal/submucosal layer then a muscular/seromuscular layer), achieving a watertight closure — test it by retrograde instillation of dye.
• Avoid the trigone and ureteric orifices; if the injury is near the trigone, place ureteric stents and involve urology, because a closure that kinks an orifice trades one problem for another.
• Catheter drainage to keep the repair empty while it heals — a dome injury is conventionally drained for around 7–10 days, a larger or trigonal injury longer; many units perform a cystogram before catheter removal to confirm no leak, particularly for low/complex repairs.
• An unrecognised bladder injury is what creates an iatrogenic vesicovaginal fistula — the complication that links this section to the fistula discussion below.

Bowel injury — repair vs resect, and who to call

• Small enterotomy / serosal tear, clean and recognised, in healthy bowel: primary repair, closed transversely to avoid luminal narrowing, in one or two layers.
• Large injury, multiple injuries, devitalised segment, or a thermal injury of uncertain extent: resect and anastomose, because a thermal injury repaired without resecting the devitalised margin breaks down.
• Large-bowel injury, gross contamination, an unstable or immunosuppressed patient, or any colorectal injury beyond your competence: involve general/colorectal surgery, and accept that a defunctioning stoma may be the safe choice rather than a primary colonic anastomosis into a contaminated field.
• The recurring killer is the delayed thermal perforation: a coagulation injury missed at the time presents at day 3–7 with peritonitis. If energy has been near bowel and you are not sure, oversew or resect prophylactically rather than gamble on the ward.

Nerve injury — prevented, then explained

Most positioning palsies are neurapraxias that recover over weeks to months. Management is prevention (correct lithotomy with neutral hip/knee angles and padded fibular heads, retractor blades that do not press laterally onto psoas, minimising operating time in extreme positions) and, when one occurs, early physiotherapy, a foot-drop splint where needed, reassurance about the usual good prognosis, and honest documentation and disclosure. Persisting deficit warrants neurology/electrophysiology input.

Vesicovaginal fistula as a complication of hysterectomy

A woman who develops continuous painless watery leakage of urine per vaginam in the days to weeks after a hysterectomy has a vesicovaginal fistula (VVF) until proven otherwise — the late expression of an unrecognised bladder injury or a devascularised vault. This deserves its own treatment because the diagnostic work-up and the choice of repair are classic exam material, and because the South African context has shifted.

Investigation.

• Confirm it is urine (send the fluid for creatinine — fistula fluid creatinine is far higher than serum) and that it is a fistula, not stress incontinence or a vaginal collection.
• Dye / three-swab test: instil dilute methylene blue into the bladder and place three swabs in the vagina (upper, middle, lower). The upper swab stained blue indicates a vesicovaginal fistula; staining of the lowest swab suggests urethral/distal leak; a swab that is wet but not blue points to a ureterovaginal fistula (urine reaching the vagina above the bladder), which redirects the whole work-up towards the ureter.
• Cystoscopy maps the fistula's size, number and relationship to the trigone and ureteric orifices; IVU / CT urogram is mandatory because VVF and ureterovaginal fistula coexist in a meaningful minority and a missed ureteric injury will wreck a bladder repair.

Timing of repair is genuinely contested. Traditional teaching delays repair ~3 months to let inflammation settle, maximising the success of a single attempt; a body of modern experience argues for early repair (within the first few weeks) of a clean, small, uninflamed iatrogenic fistula to spare the woman months of misery, with comparable success in selected cases. There is no high-quality RCT settling this; the defensible position is that the first repair is the best chance of cure, so timing is chosen to give that first attempt the healthiest tissue, and an experienced fistula surgeon, not the calendar alone, should make the call.

Comparison of surgical approaches — the core of the operative decision:

The unifying principles of any approach — tension-free, watertight, multi-layer closure with non-overlapping suture lines, well-vascularised tissue (interpose a flap when in doubt), and prolonged post-operative bladder drainage — matter more than the route. Choose the least invasive route that gives adequate access: a simple post-hysterectomy VVF that is reachable vaginally does not need a laparotomy.

The South African context. SA has driven the classic obstetric fistula (from obstructed labour) down through facility delivery, the Labour Care Guide/partograph and timely caesarean, so in better-resourced SA settings the commoner fistula is now iatrogenic — after hysterectomy or caesarean — not obstructed labour. Obstetric fistula persists in under-served and migrant populations, and SA contributes to and refers into specialist fistula centres and the FIGO/GFMER training network; the consultant should know where the regional fistula service is and refer complex or recurrent cases rather than accumulate failed repairs locally.

Guidelines compared

This is an anatomy-and-technique field with relatively little to disagree about, but the bodies emphasise different things, and the consent figures are the most exam-relevant point of divergence.

The notable point of non-consensus is routine cystoscopy: guidance such as 1038 stresses visual ureteric identification but does not mandate universal cystoscopy at hysterectomy, while a substantial body of opinion (and routine practice in many units, especially after MIS and after any difficult dissection) argues that universal intra-operative cystoscopy catches the urinary injuries that visual inspection misses and is cost-effective given the cost of a missed injury. The defensible exam position is selective-to-liberal cystoscopy — mandatory after any difficult case, distorted anatomy, suspected injury, or whenever energy has been used near the ureter or trigone — rather than dogmatic "always" or "never".

The evidence & the controversy

The honest framing is that this is a low-RCT field: you cannot randomise women to ureteric injury, so the evidence is observational (incidence series, registry data, technique cohorts) plus the consent figures and the few genuinely randomised data points that bear on it (chiefly the haemorrhage drugs). A confident "level-1" claim for, say, the timing of VVF repair overreaches — the discipline is to reason from anatomy and from the quantified risks, and to be explicit about where evidence runs out.

The first defensible thread is recognition timing as the dominant prognostic variable. The systematic-review data make the asymmetry concrete: most bladder injuries are diagnosed intra-operatively, but most ureteric injuries are detected only post-operatively, with a typical delay of around 10–14 days — and that delay is what converts a repairable injury into renal loss, sepsis, a fistula and litigation. This is the entire argument for active intra-operative checking (look, watch peristalsis, cystoscopy when in doubt): the technology to catch the injury exists and is cheap; the failure is not looking.

The second thread is the energy-device problem in the MIS era. As benign surgery moved laparoscopic and adopted advanced bipolar and ultrasonic devices, the injury pattern shifted from sharp/clamp injuries seen at the time towards thermal injuries that declare late — the lateral-spread coagulation that looks intact and necroses days later. The controversy here is partly device marketing versus measured lateral spread, and the safe consultant stance is mechanistic discipline (respect the energy device's spread distance near the ureter, bladder and bowel, and resect thermal injuries back to healthy tissue) rather than faith in any "sealed and safe" claim. This connects directly to the sibling Final material on surgical route and energy and on endoscopic-entry injury.

The third thread is the haemorrhage drugs, where the evidence actually is randomised: WOMAN established early TXA in obstetric haemorrhage and CRASH-2 in trauma, both showing that the benefit is time-critical and front-loaded (given early or the effect is lost), with no thrombotic penalty — and the read-across to surgical bleeding, while an extrapolation, is the basis for giving TXA early in any major intra-operative haemorrhage. The current WHO/FIGO/ICM direction in the obstetric world (act earlier, bundle the response, TXA early) is the same philosophy the surgical team should bring to a sidewall bleed.

A live topical/ethics strand belongs here, and it is the part most often avoided. When a complication occurs, the duty of candour / open disclosure is not optional and not adversarial: the GMC standard and the Montgomery-era consent culture require that you tell the woman what happened, what it means and what you are doing about it, and that you apologise — and the evidence (and medico-legal experience) is that honest early disclosure reduces, not increases, litigation, whereas a complication concealed and discovered destroys trust and indemnifies nothing. The defensible framework is recognise → repair/refer → document contemporaneously → disclose openly and apologise → support the patient and follow up — a process, not a confession of negligence (a recognised complication competently managed is not negligence; concealing it may be). The parallel ethical problem — an unexpected invasive malignancy reported on a hysterectomy specimen removed for presumed benign disease — is handled the same way in principle: stop, do not improvise a cancer operation you did not consent or stage for, disclose, refer to gynae-oncology for proper staging and MDT, and resist the temptation to "complete" an operation the histology has just redefined.

Landmark trials & key evidence

A technique field has few trials, so this table is deliberately honest about evidence type — the randomised entries are the haemorrhage drugs; the rest are the consent and incidence data a candidate must be able to quote.

A worked number worth carrying: the RCOG consent figure of 7 in 1000 for bladder/ureter damage at abdominal hysterectomy means roughly 1 in 140 women — so a surgeon doing 150 hysterectomies a year should, on average, injure the urinary tract about once a year. That reframes the question from "will it ever happen to me" to "it will happen, so the skill is recognising it when it does" — which is the whole argument for routine intra-operative vigilance and a low threshold for cystoscopy.

Worked viva — recognising a ureteric injury

A typical stem: "You are doing an abdominal hysterectomy for a bulky fibroid uterus at a regional hospital. After securing the right uterine pedicle the field will not stay dry low on the right, and you are worried about the ureter." A high-scoring answer runs:

1. Stop and get control, not blind clamps. "I would pack, get suction and good light and an assistant, and resist clamping blindly near the sidewall — that is how the ureter and iliac vein are injured. I would tell anaesthesia my estimated loss and have blood available."
2. Find the ureter. "I would open the retroperitoneum on the pelvic sidewall, identify the ureter and watch it peristalse, and trace it across the uterine artery to the bladder. Peristalsis tells me it is alive but not that it is uninjured."
3. Prove patency. "If there is any doubt I would do on-table cystoscopy after IV dye and confirm a brisk jet from both ureteric orifices; no jet on the right means an obstructed or injured ureter."
4. Repair by level, call for help honestly. "A clean lower-third injury I would manage by ureteroneocystostomy, with a psoas hitch for a short gap, over a JJ stent, drained — tension-free, watertight, well-vascularised, mucosa-to-mucosa. If the anatomy is hostile or this is beyond my competence I would stabilise, divert (stent or nephrostomy) and involve/refer to urology rather than attempt an unfamiliar repair badly."
5. Close the loop. "Post-operatively I would tell the patient what happened, what it means and what I have done, apologise, document contemporaneously, and arrange stent removal and imaging follow-up — duty of candour, not concealment."

Exam traps & red flags

• Not looking. The single commonest failure is failing to check the ureters and bladder after a difficult dissection. A missed injury that was visible on the table is the disaster; "the field looked fine" is not a defence.
• Trusting peristalsis alone. A peristalsing ureter is alive but may be partially transected, ligated distally or thermally injured — peristalsis does not exclude injury, and dye/cystoscopy is the confirmation when there is doubt.
• Forgetting the thermal injury declares late. Bladder, bowel and ureteric thermal injuries look intact at the time and leak/perforate at day 5–14; resect thermal injuries back to healthy tissue rather than repairing the visible mark.
• Repairing a lower-third ureteric injury end-to-end. The distal segment is poorly vascularised — reimplant (ureteroneocystostomy ± psoas hitch/Boari flap), do not do a tension-end-to-end in the pelvis.
• Blind clamping into a pool of blood. Converts a controllable venous ooze into ureteric transection or external-iliac-vein injury. Control by pressure/packing first; clamp only what you can see.
• Freezing on the haemorrhage ladder. Persisting with sutures while the patient becomes coagulopathic and cold instead of escalating to internal iliac ligation, packing + damage control, or IR. Knowing when to pack and leave is consultant judgement.
• Continuous post-hysterectomy leakage misread as stress incontinence. Painless continuous watery loss is a fistula until the dye/three-swab test and a CT urogram say otherwise — and always exclude a coexisting ureteric fistula before repairing a VVF.
• A laparotomy for a simple vaginally-reachable VVF. Match the route to the access needed; the transvaginal Latzko/flap repair handles most simple post-hysterectomy fistulae with far less morbidity.
• Concealing or minimising the complication. Failing the duty of candour is both an ethical and a medico-legal error; honest early disclosure with an apology is the standard and reduces, not increases, litigation.
• "Completing" an operation the histology just changed. Incidental invasive malignancy on a benign-intent hysterectomy specimen means stop, disclose, and refer to gynae-oncology for staging — not an improvised, unconsented cancer operation.
• Positioning palsies blamed on the patient. Foot drop (common peroneal) or a weak quadriceps with absent knee jerk (femoral) after lithotomy/retractor pressure is iatrogenic and preventable; document, refer to physiotherapy, and disclose.

Evidence anchors

• WOMAN trial — early tranexamic acid in postpartum haemorrhage, Lancet 2017
• Systematic review of urological injury during caesarean section and hysterectomy, Int Urogynecol J 2022 (PMC9870963)
• RCOG Consent Advice No. 4 — Abdominal Hysterectomy for Benign Conditions (2010)
• Montgomery v Lanarkshire Health Board [2015] UKSC 11 — material-risk consent standard
• GMC — Decision making and consent (in effect 9 November 2020): material-risk disclosure and the professional duty of candour (supersedes the archived RCOG Obtaining valid consent, Clinical Governance Advice No. 6).
• RCOG / NHS-Scotland (Right Decisions) guideline 1038 — Minimising urinary tract injury at gynaecological surgery for benign disease: visually identify the ureter before clamping/sealing; urology input + pre-op imaging for distorted anatomy.
• FIGO good-practice recommendations on standardising vesicovaginal-fistula repair outcomes (Browning et al., Int J Gynecol Obstet 2025) and FIGO expert opinion on post-obstetric-fistula repair incontinence (Goh et al., Int J Gynecol Obstet 2025/26); Goh (2004) and Waaldijk VVF classifications; FIGO/GFMER fistula-surgery training network.
• WHO — obstetric fistula prevention (skilled attendance, Labour Care Guide/partograph, timely caesarean; "Ending Fistula").
• South Africa: facility delivery has made obstetric fistula uncommon, so iatrogenic VVF after hysterectomy/caesarean is now the commoner SA cause in better-resourced settings (NCCEMD Saving Mothers lists obstetric haemorrhage among leading SA maternal deaths); informed consent grounded in the National Health Act 61 of 2003, aligning SA practice with the Montgomery material-risk direction.
• Standard reconstructive/haemostatic techniques referenced from operative consensus: ureteroneocystostomy, psoas hitch, Boari flap; internal iliac (hypogastric) artery ligation and pelvic packing; transvaginal Latzko repair, Martius and omental interposition flaps, transabdominal/transvesical (O'Conor) VVF repair.