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Dehiscence – Causes, Symptoms and Treatment

Dehiscence refers to the separation or rupturing of a surgical wound or suture line. It is a potential complication following surgical procedures.

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Things worth knowing about "Dehiscence"

Dehiscence refers to the separation or rupturing of a surgical wound or suture line. It is a potential complication following surgical procedures.

What Is Dehiscence?

Dehiscence (from Latin dehiscere = to gape or split open) is a medical term describing the separation or bursting open of a surgical wound before it has fully healed. The wound edges may partially or completely separate, and the condition can affect superficial skin layers, deeper tissue layers, or even internal organs. It is considered one of the more serious complications of surgical procedures.

Causes

Wound dehiscence is often the result of multiple contributing factors:

Wound infection: One of the most common causes, as bacterial contamination impairs tissue repair and weakens suture integrity.
Mechanical stress: Excessive strain on the wound from coughing, sneezing, vomiting, or physical activity can cause sutures to give way.
Impaired wound healing: Conditions such as diabetes mellitus, obesity, or poor circulation reduce the body's ability to regenerate tissue effectively.
Malnutrition: Deficiencies in protein, vitamin C, or zinc can significantly delay the healing process.
Immunosuppression: Medications such as corticosteroids or chemotherapy agents can inhibit wound healing.
Technical factors: Improper suturing technique or inappropriate suture material may also predispose a wound to dehiscence.

Symptoms

Signs and symptoms of dehiscence vary depending on severity and location:

Visible separation or gaping of wound edges
Pain or pressure sensation at the wound site
Redness, swelling, or warmth suggesting infection
Discharge of wound fluid, blood, or pus
In severe cases: protrusion of intestinal loops or other organs (evisceration), which constitutes a medical emergency

Diagnosis

Dehiscence is typically diagnosed through a clinical examination of the wound. The healthcare provider assesses the extent of separation, looks for signs of infection, and determines whether deeper tissue layers are involved. If deep or internal dehiscence is suspected, imaging studies such as ultrasound or computed tomography (CT) may be performed.

Treatment

Treatment depends on the severity and underlying cause of the dehiscence:

Conservative management: Small, superficial separations may be managed with regular wound care, moist wound dressings, and compression bandages, allowing the wound to heal by secondary intention.
Surgical revision: Larger or deeper dehiscences often require a repeat surgical procedure to debride the wound, address any infection, and reclose the wound (tertiary closure).
Negative pressure wound therapy (NPWT): A vacuum-assisted dressing can be applied to promote wound healing and reduce bacterial burden.
Treatment of underlying conditions: Contributing factors such as poorly controlled diabetes or nutritional deficiencies must be addressed concurrently.

Prevention

The risk of wound dehiscence can be minimized through optimal wound care, rigorous infection prevention, management of pre-existing conditions before surgery, adequate nutritional status, and the use of appropriate suturing techniques and materials.

References

Bruns N., Bohnen J.M.A. (2021): Surgical site infections and wound dehiscence. Surgical Infections, 22(5), pp. 480-487.
Leaper D.J., Edmiston C.E. (2016): World Health Organization: global guidelines for the prevention of surgical site infection. Journal of Hospital Infection, 95(2), pp. 135-136.
Mangram A.J. et al. (1999): Guideline for prevention of surgical site infection. Infection Control and Hospital Epidemiology, 20(4), pp. 250-278.

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