NO DRUG THERAPY REQUIRED (EMERGENCY SURGICAL REFERRAL)
Refer to emergency surgery the same hour. Nil by mouth from the moment of suspicion, start IV fluids, and arrange transfer without waiting for imaging or blood results. WSES: emergency repair immediately when intestinal strangulation is suspected (grade 1C). - Immediate - within the hour
An infant or young child with an irreducible groin or umbilical lump, vomiting, or inconsolable crying needs the same immediate transfer. Incarceration is commonest in the first year of life, when the processus vaginalis is still patent.
2017 update of the WSES guidelines for emergency repair of complicated abdominal wall hernias (World J Emerg Surg 2017;12:37, PMC5545868)
A hernia that will not go back and hurts is a blood-supply problem, not a hernia problem. Nothing in a clinic reverses it and every hour of delay costs bowel.
- SURGICAL EMERGENCY: refer immediately when strangulation is suspected (WSES 2017, grade 1C). The risk of strangulation roughly doubles for every 24 hours of delay.
- Do NOT wait for fever, tachycardia or a white-cell count. WSES states the classic clinical signs alone are unreliable for early detection - what predicts strangulation is SIRS, lactate, CPK, D-dimer and contrast CT, none of which should hold up a referral from a clinic.
- Do NOT force manual reduction (taxis) if there is any sign of strangulation - dusky or discoloured overlying skin, peritonism, or a systemically unwell patient. Bowel that has infarcted will not reduce, and forcing it risks pushing dead bowel back inside the abdomen where the damage is hidden. This one is standard surgical practice rather than a numbered WSES recommendation.
- Bowel obstruction on its own does not rule reduction out, but reduction is a decision for the surgeon in hospital. It is never a reason to keep the patient in the clinic.
- Highest risk of incarceration: women, femoral hernias, and anyone previously admitted for a groin hernia (HerniaSurge 2018). Treat a groin hernia in a woman as femoral until a surgeon says otherwise.
- Nil by mouth means no oral analgesia, no oral fluids and no laxative.
- Elective repair carries roughly 0.1% mortality; emergency surgery for strangulated bowel is an order of magnitude worse. The difference is made in the first few hours.