Wound complications (dehiscence, evisceration)

Wound Complications - The Unraveling

• Dehiscence: Post-op separation of fascial layers, often preceded by serosanguinous discharge.
• Evisceration: Protrusion of abdominal organs through the fascial defect. A surgical emergency.

Key Risk Factors: Infection, malnutrition (albumin < 3.5), obesity, ↑intra-abdominal pressure (coughing, ileus), steroid use.

⭐ A sudden gush of "salmon-colored" (serosanguinous) fluid from the incision is a classic sign of impending fascial dehiscence.

Risk Factors - Setting the Stage

• Patient-Specific Factors:

  • Poor nutrition (Albumin < 3.5 g/dL, Vit C deficiency)
  • Comorbidities: Diabetes, obesity (BMI > 30), jaundice, uremia
  • Immunosuppression: Steroids, chemotherapy, advanced age
  • Tissue hypoxia: Smoking, anemia

• Local & Technical Factors:

  • ↑ Intra-abdominal pressure: Coughing, vomiting, ileus, ascites
  • Wound environment: Surgical site infection (SSI), hematoma
  • Surgical technique: Improper suture placement, tension on closure

⭐ Most dehiscences occur on postoperative days 5-8, when wound tensile strength is minimal before significant collagen deposition.

Presentation & Diagnosis - Spotting the Split

• Wound Dehiscence: Partial or complete separation of fascial layers, often concealed beneath intact skin.
  • Patient may report a sudden “popping” sensation during straining.
  • Profuse serosanguinous (salmon-colored) drainage is a pathognomonic sign.
• Wound Evisceration: Protrusion of intra-abdominal contents (e.g., omentum, bowel) through the separated layers. This is a surgical emergency.
• Diagnosis: Primarily clinical, confirmed by gentle probing of the incision with a sterile applicator.

⭐ Most cases occur between postoperative days 5-8, when wound tensile strength is at its minimum before significant collagen deposition.

Management - The Fix-It Plan

Immediate intervention is critical, especially for evisceration. The management strategy depends entirely on the integrity of the fascial layer.

⭐ Surgical evisceration is a surgical emergency with a mortality rate of up to 15-20%, often due to sepsis and fluid/electrolyte loss.

Prevention - Closing the Door

• Pre-operative Optimization: Address modifiable risk factors. Control blood glucose, improve nutritional status (protein, vitamins), and encourage smoking cessation.
• Intra-operative Technique:
  • Achieve a tension-free fascial closure.
  • Use slowly-absorbing or non-absorbable sutures.
  • Place sutures 1 cm from the fascial edge and 1 cm apart.
  • Avoid tissue ischemia by not tying sutures too tightly.

⭐ A suture length to wound length (SL:WL) ratio of 4:1 or greater significantly reduces dehiscence risk.

High‑Yield Points - ⚡ Biggest Takeaways

• Wound dehiscence is the separation of fascial layers; evisceration involves organ protrusion through the defect.
• Both typically occur 5-8 days post-op, often heralded by a "popping" sensation and serosanguinous (salmon-colored) drainage.
• The most critical risk factor is inadequate fascial closure; others include obesity, malnutrition, and ↑ intra-abdominal pressure.
• Evisceration is a surgical emergency; immediately cover protruding contents with sterile, saline-soaked dressings.
• Definitive management for both is an urgent return to the operating room for fascial re-closure.