Obstetric Hysterectomy
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Direct answer
Removing the uterus at or immediately after delivery — obstetric (peripartum) hysterectomy — is the definitive operation for haemorrhage that has defeated uterotonics and conservative surgery, and for the placenta accreta spectrum diagnosed or discovered at birth. Commonest cited indications are refractory uterine atony, abnormal placental invasion, uterine rupture beyond repair, and sepsis with a gangrenous or unrepairable uterus; in India it is the fortress of last resort in maternal near-miss care, with incidence commonly quoted around 1 in 1000-2000 deliveries. Key surgical facts: the cervix and lower segment are vascular and oedematous, the ureter is displaced and at risk at the level of the cervical stump, and a subtotal (supracervical) hysterectomy is legitimate when speed is life-saving and the cervix is reachable — a young mother's ovaries are conserved unless diseased.
What you must remember
- Indication ladder: atony unresponsive to the full uterotonic-and-mechanical ladder, placenta accreta spectrum (praevia plus previous scars), irreparable uterine rupture, Couvelaire-type coagulopathy bleeding, uterine sepsis or gangrene, and rarely broad-ligament haematoma or cervical cancer.
- Conservative steps come first in a stable woman: uterotonics, balloon tamponade, B-Lynch or Hayman compression sutures, stepwise uterine artery ligation, internal iliac (hypogastric) artery ligation — hysterectomy follows their failure, except in accreta planned prenatally.
- Total versus subtotal: total hysterectomy is standard, but subtotal (supracervical) is faster and bleeds less in a crashing patient — accept it when the cervix is inaccessible; continue cervical screening.
- Ureteric injury clusters at the cervical stump where the ureter crosses the uterine artery — identify, stay close to the uterus, and ligate the uterine artery ascending branch on the uterus itself.
- Ovaries are preserved in reproductive-age women unless the indication is sepsis or malignancy.
- Placenta accreta spectrum: praevia with prior caesarean — anticipate with ultrasound and Doppler, deliver by planned caesarean-hysterectomy in a blood-bank-equipped centre, ideally leaving the placenta in situ rather than avulsing it piecemeal.
- Complications: massive transfusion and its coagulopathy, ureteric and bladder injury (bladder flap dissection in a scarred lower segment), vault haematoma, sepsis, and intensive-care stay; psychological debriefing for lost fertility.
Decision-making before the incision
Consider a 32-year-old G3P2, two prior caesareans, placenta praevia with ultrasound suggesting increta, planned at 36 weeks. The antenatal decision is the real operation: imaging reviewed, two units crossmatched rising to four on standby, cell salvage where available, consent explicitly for hysterectomy, urology standby for possible cystoscopy and stents, and a neonatal team. At caesarean, the placental bed confirms invasion — the disciplined move is to deliver the baby, close or clamp the uterus, leave the placenta attached, and proceed to hysterectomy rather than peel the placenta, because piecemeal avulsion opens lacunae that no suture controls.
Contrast the emergency version: hours after a vaginal birth, an atonic uterus still bleeds through oxytocin, ergometrine, misoprostol and carboprost, a Bakri balloon has failed and B-Lynch sutures are soaked. Resuscitation runs in parallel — two wide-bore cannulae, activation of the massive transfusion protocol, anaesthetist leading the lines — while the surgeon moves briskly: round ligament, pedicle by pedicle close to the uterus, ureter under direct vision, uterine artery on the uterus, then the cervical stump; if the patient is unstable and anatomy hostile, the subtotal decision saves minutes and lives. Postoperatively, the checklist is coagulopathy correction, urine output watching for ureteric trauma, sepsis vigilance, and an honest family conversation.
High-yield viva angles
Examiners ask why internal iliac artery ligation precedes hysterectomy in teaching: bilateral ligation reduces pulse pressure to the uterus and lets conservative surgery succeed in a share of women — though modern practice weights earlier hysterectomy when instability dictates. Second favourite: why subtotal is acceptable — speed, and the oedematous, unreachable cervix; third, why the ureter is at risk — it runs under the uterine artery ("water under the bridge") and is displaced by the gravid cervix, a hands-on anatomy answer that earns viva marks.
Frequently asked questions
What is the commonest indication for emergency obstetric hysterectomy?
Refractory uterine atony after the uterotonic and conservative-surgical ladder has failed, with placenta accreta spectrum the leading planned indication.
When is subtotal hysterectomy preferred during obstetric hysterectomy?
In a haemodynamically crashing patient or when the oedematous cervix is surgically inaccessible — it is faster, bleeds less, and still controls the haemorrhage.
Why is the ureter at special risk in obstetric hysterectomy?
The gravid cervix displaces it laterally and it crosses beneath the uterine artery at the cervical stump, exactly where clamps are placed.
What is the correct approach to an accreta placenta at caesarean?
Leave the placenta in situ and proceed with hysterectomy rather than attempting piecemeal removal, which causes uncontrollable lacunar bleeding.
Are ovaries removed during obstetric hysterectomy?
No — ovaries are conserved in reproductive-age women unless the indication is sepsis, gangrene or malignancy.