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Burst Abdomen (Post‑Operative)

What is Burst abdomen (post‑operative)?

A burst abdomen, also called post‑operative wound dehiscence, occurs when the layers of a surgical incision in the abdominal wall separate after the operation. The skin, sub‑cutaneous tissue, fascia, and muscle that were sutured together pull apart, creating an opening that may expose underlying organs or cause the abdomen to bulge. It is most common in the first week after surgery, especially after major intra‑abdominal procedures such as colectomy, hysterectomy, or emergency laparotomy.

While “burst abdomen” sounds dramatic, it is a surgical complication rather than a disease. Prompt recognition and treatment are essential because the condition can progress to infection, intra‑abdominal sepsis, or even evisceration (protrusion of abdominal organs).

Incidence rates vary from 0.5 % to 5 % depending on the type of surgery, patient risk factors, and surgical technique <sup>†</sup>. The condition is more frequent in patients with poor wound healing, high intra‑abdominal pressure, or systemic illnesses that impair tissue repair.

Common Causes

Several factors can predispose a patient to a burst abdomen. Below are the most frequently identified causes:

• Inadequate suturing technique – insufficient suture material, poor spacing, or incorrect knot security.
• Excessive intra‑abdominal pressure – coughing, vomiting, constipation, or ascites.
• Infection of the surgical wound – bacterial contamination weakens tissue edges.
• Malnutrition or hypoalbuminemia – low protein levels impair collagen synthesis.
• Systemic diseases – diabetes mellitus, chronic steroid use, connective‑tissue disorders (e.g., Ehlers‑Danlos).
• Obesity – increased tension on the incision and reduced vascular supply.
• Emergency surgery – limited time for meticulous closure and higher contamination risk.
• Smoking – nicotine causes vasoconstriction and delays wound healing.
• Radiation or previous abdominal surgeries – scar tissue is less pliable.
• Use of certain medications – anticoagulants, chemotherapeutic agents, or immunosuppressants.

Associated Symptoms

When a burst abdomen begins, patients often notice a constellation of symptoms that may develop gradually or suddenly:

• Visible separation of the skin sutures or a “gap” in the incision line.
• Sudden bulging or swelling of the abdomen at the incision site.
• Feeling of pressure or “fullness” inside the abdomen.
• Pain or tenderness that worsens with movement, coughing, or straining.
• Redness, warmth, or discharge from the wound (signs of infection).
• Fever or chills, indicating systemic infection.
• Vomiting or inability to pass gas/stool if bowel loop is involved.
• In severe cases, visible protrusion of bowel loops (evisceration).

When to See a Doctor

Because a burst abdomen can evolve quickly, patients should contact their surgeon or go to an emergency department if any of the following occur:

• Any visible separation of the incision stitches or sutures.
• Increasing pain that is not relieved by prescribed analgesics.
• Fever ≥ 38 °C (100.4 °F) or chills.
• New or worsening redness, swelling, or foul‑smelling discharge from the wound.
• Persistent nausea or vomiting, especially if you cannot keep fluids down.
• Feelings of “tightness” or a bulge that expands when you cough or stand.
• Any suspicion that internal organs are protruding through the wound.

Early medical evaluation can prevent progression to life‑threatening infection or organ damage.

Diagnosis

Evaluation of a suspected burst abdomen involves a combination of history, physical examination, and targeted investigations.

1. Clinical assessment

• Inspection – the surgeon looks for suture separation, skin edge retraction, or visible organ protrusion.
• Palpation – gentle pressure evaluates the integrity of the fascial layer (the deep “white line” of the abdomen).
• Assessment of systemic signs – temperature, heart rate, blood pressure, and respiratory status.

2. Imaging studies (when needed)

• Ultrasound – bedside tool to detect fluid collections or herniated bowel.
• CT scan with contrast – provides detailed view of fascial disruption, intra‑abdominal abscess, or organ injury.
• Plain abdominal X‑ray – may show free air if there is an accompanying perforation.

3. Laboratory tests

• Complete blood count (CBC) – looks for leukocytosis indicating infection.
• C‑reactive protein (CRP) or erythrocyte sedimentation rate (ESR) – markers of inflammation.
• Serum albumin – assesses nutritional status.
• Blood cultures if fever is present.

Treatment Options

Management depends on the severity of the dehiscence, presence of infection, and the patient’s overall health.

1. Immediate measures (first‑aid)

• Cover the wound with a sterile, non‑adherent dressing to protect exposed tissue.
• Keep the patient NPO (nothing by mouth) to reduce intra‑abdominal pressure.
• Administer supplemental oxygen if available.
• Provide analgesia as ordered (often intravenous opioids).

2. Surgical repair

Most burst abdomens require operative intervention, performed within 24–48 hours of diagnosis.

• Re‑closure of the fascia – using strong, slowly absorbing sutures (e.g., polydioxanone) placed in a “mass closure” or “continuous loop” technique.
• Mesh reinforcement – in high‑risk patients, a synthetic or biologic mesh may be placed to add strength.
• Debridement – removal of devitalized tissue and thorough irrigation with saline.
• Drain placement – to prevent fluid accumulation.
• Management of infection – intra‑operative cultures and targeted antibiotics.

3. Antibiotic therapy

Broad‑spectrum intravenous antibiotics are started empirically (e.g., cefazolin plus metronidazole) and later tailored based on culture results. Duration typically ranges from 5–7 days, extending if an abscess or deeper infection is present.

4. Supportive care

• Fluid resuscitation and electrolyte balance.
• Parenteral or enteral nutrition if oral intake is delayed.
• Blood glucose control, especially in diabetics, to improve wound healing.
• Stress‑ulcer prophylaxis and venous thromboembolism (VTE) prophylaxis.

5. Home care after discharge

• Follow‑up wound checks (usually on day 3, 7, and 14).
• Keep the incision clean and dry; use prescribed dressings.
• Gradual return to activity – avoid heavy lifting or straining for 4–6 weeks.
• Maintain a high‑protein diet (1.5 g/kg body weight) and adequate calories.
• Continue any prescribed antibiotics or wound‑care ointments as directed.

Prevention Tips

Many risk factors for burst abdomen are modifiable. Both surgeons and patients can take steps to lower the odds of this complication.

Pre‑operative measures

• Optimize nutrition – correct hypoalbuminemia, supplement protein, and consider a pre‑operative “immune‑enhancing” diet.
• Control blood glucose – aim for HbA1c < 7 % in diabetics.
• Cease smoking – stop at least 4 weeks before surgery.
• Weight management – reduce BMI < 30 kg/m² when possible.
• Review medications – discuss steroid tapering, anticoagulant management, and chemotherapy timing with your surgeon.

Intra‑operative techniques

• Use of tension‑free, layered closure with proper suture material.
• Consider prophylactic mesh in high‑risk cases (e.g., massive obesity, chronic cough).
• Avoid excessive electrocautery near the fascial edge to preserve tissue viability.
• Maintain normothermia and adequate oxygenation throughout the case.
• Gentle handling of tissues (minimizing traction and crush injury).

Post‑operative care

• Prompt treatment of cough, constipation, or nausea to keep intra‑abdominal pressure low.
• Early ambulation while respecting wound integrity.
• Regular assessment of wound drainage and incision integrity.
• Use of abdominal binders in selected patients to support the incision.
• Educate patients about signs of dehiscence before discharge.

Emergency Warning Signs

If any of the following develop, seek immediate emergency care (call 911 or go to the nearest ER):

• Visible protrusion of intestines or other organs through the incision (evisceration).
• Sudden, severe abdominal pain with a rigid, board‑like abdomen.
• Rapid heart rate (tachycardia) > 120 bpm, low blood pressure, or signs of shock.
• High fever > 39 °C (102 °F) combined with confusion or lethargy.
• Profuse, foul‑smelling wound drainage or pus.
• Inability to breathe comfortably due to abdominal distension.

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References:

1. Mayo Clinic. “Surgical wound infection.” mayoclinic.org (accessed June 2026).
2. CDC. “Guidelines for the prevention of surgical site infection.” cdc.gov.
3. NIH National Institute of Diabetes and Digestive and Kidney Diseases. “Abdominal wound dehiscence.” niddk.nih.gov.
4. Cleveland Clinic. “Post‑operative wound dehiscence: causes and management.” clevelandclinic.org.
5. World Health Organization. “Surgical site infection prevention.” who.int.
6. Hsieh CH, et al. “Risk factors for abdominal wound dehiscence after laparotomy.” *Ann Surg*, 2022;276:123‑131.

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