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Severe Burns

What is Burns (Severe)?

A severe burn is a traumatic injury to the skin and underlying tissues caused by heat, chemicals, electricity, radiation, or friction that results in extensive tissue damage. Burns are classified by depth (first‑, second‑, third‑, and fourth‑degree) and by the percentage of total body surface area (TBSA) involved. When a burn is described as “severe,” it typically means one or more of the following:

• Third‑degree (full‑thickness) or fourth‑degree (involving muscle, bone, or tendon) injury.
• Second‑degree deep (deep partial‑thickness) burn covering >10 % TBSA in an adult or >5 % TBSA in a child.
• Any burn that threatens the airway, causes severe pain, large fluid loss, or is associated with inhalation injury.

These injuries trigger a systemic response that can affect the cardiovascular, respiratory, immune, and renal systems, making rapid assessment and treatment essential.

Common Causes

Severe burns can result from a wide variety of exposures. Below are the most frequent sources:

• Thermal flame burns – Open fire, gasoline, wood stoves, or exploding gases.
• Scald burns – Hot liquids (boiling water, tea, soup) especially in children.
• Contact burns – Touching hot surfaces, ovens, irons, or heated metal.
• Chemical burns – Acids (e.g., sulfuric, hydrochloric), alkalis (e.g., lye), or industrial solvents.
• Electrical burns – Household wiring, power lines, lightning, or medical devices.
• Radiation burns – Sunburn (UV), radiation therapy, or nuclear exposure.
• Friction burns – Road rash from high‑speed crashes or sports injuries.
• Cold (cryogenic) burns – Contact with liquid nitrogen, dry ice, or extreme cold.
• Industrial accidents – Explosives, molten metal, or chemicals in factories.
• Self‑inflicted or assault injuries – Intentional burns from incendiary devices.

Associated Symptoms

Severe burns rarely occur in isolation. The following signs and symptoms often accompany the primary skin injury:

• Pain – Intense, burning sensation (may be absent in third‑degree burns due to nerve destruction).
• Blistering – Fluid‑filled lesions, especially in deep partial‑thickness burns.
• White, leathery, or charred skin – Indicative of full‑thickness damage.
• Swelling (edema) – Can compromise circulation, especially around joints.
• Redness or erythema – Common in superficial burns.
• Respiratory distress – Inhalation injury from smoke or hot gases.
• Hypotension and rapid pulse – Signs of fluid loss and burn shock.
• Fever, chills, or malaise – Early sign of infection or systemic inflammatory response.
• Decreased urine output – Indicator of renal hypoperfusion.

When to See a Doctor

Because severe burns can quickly become life‑threatening, you should seek professional medical care immediately if any of the following are present:

• Burns covering more than 10 % TBSA in adults (5 % in children) or any burn on the face, hands, feet, genitalia, or over major joints.
• Third‑ or fourth‑degree burns (charred, white, or leathery appearance).
• Signs of inhalation injury – hoarseness, coughing up soot, difficulty breathing, or singed nasal hairs.
• Severe pain that is not relieved with over‑the‑counter analgesics.
• Rapid heartbeat, low blood pressure, dizziness, or fainting (possible burn shock).
• Visible infection – increasing redness, swelling, pus, foul odor, or fever >38.3 °C (101 °F).
• Electrical or chemical burns, regardless of size, because of hidden tissue damage.
• Any burn sustained in a child younger than 2 years or in an elderly adult with comorbidities.

Diagnosis

Evaluation of severe burns occurs in the emergency department or a dedicated burn center. The assessment includes:

1. Primary Survey (ABCs)

• Airway – Look for soot, burns, or swelling; assess voice and breathing.
• Breathing – Monitor oxygen saturation, listen for wheezing or crackles.
• Circulation – Check pulse, blood pressure, capillary refill; begin fluid resuscitation if needed.

2. Burn Assessment

• Extent – Use the “Rule of Nines” (adults) or Lund‑Browder chart (children) to estimate TBSA.
• Depth – Visual inspection (color, pliability) and touch; laser Doppler imaging may be used for precise depth measurement.
• Location – Note involvement of critical areas (face, neck, hands, perineum, major joints).

3. Laboratory & Imaging Studies

• Complete blood count, electrolytes, renal & liver panels.
• Arterial blood gas (ABG) if inhalation injury is suspected.
• Chest X‑ray or CT scan for smoke inhalation or associated trauma.
• Urinalysis for myoglobinuria after electrical burns.

4. Specialized Evaluation

• Burn specialist consult – often at a regional burn center.
• Plastic surgeon for reconstruction planning.
• Physical therapist for early mobility and scar management.

Treatment Options

Treatment is divided into acute (first‑48 hours) and ongoing phases. The goals are to preserve life, prevent infection, maintain fluid balance, and promote optimal healing.

Acute Management

1. Airway protection – Early intubation for inhalation injury or facial burns.
2. Fluid resuscitation – Parkland formula (4 mL × TBSA % × body weight kg) of crystalloid solution given in the first 24 hours (½ in the first 8 hrs). Adjust based on urine output (target 0.5 mL/kg/hr in adults, 1 mL/kg/hr in children).<sup>1</sup>
3. Pain control – IV opioids (e.g., morphine, fentanyl) plus adjuncts such as ketamine or gabapentin for neuropathic pain.
4. Wound care
   • Gentle debridement of loose eschar.
   • Application of topical antimicrobial agents (e.g., silver sulfadiazine, mafenide acetate) or biosynthetic dressings.
   • For deep burns, early excision and grafting (autograft, allograft, or cultured epidermal autograft) within the first week improves outcomes.
5. Infection prophylaxis – Broad‑spectrum IV antibiotics if there are signs of sepsis or contaminated wounds (e.g., coverage for Pseudomonas, Staphylococcus aureus).
6. Tetanus prophylaxis – Update immunization if vaccination status is unclear.

Continued Care & Rehabilitation

• Physical therapy – Early range‑of‑motion exercises to prevent contractures.
• Occupational therapy – Training for ADL (activities of daily living) and adaptive equipment.
• Scar management – Pressure garments, silicone gel sheets, and laser therapy beginning 2–3 weeks after wound closure.
• Psychological support – Counseling for PTSD, depression, or body‑image issues, which are common after severe burns.
• Nutritional support – High‑protein (1.5–2.0 g/kg/day), high‑calorie diet (25–35 kcal/kg/day) with vitamins A, C, zinc to aid wound healing.

Home Care (after discharge)

• Keep dressings clean and dry; follow the wound‑care schedule prescribed.
• Monitor for increasing pain, redness, swelling, or drainage – report immediately.
• Continue prescribed analgesics; taper as advised by the physician.
• Maintain adequate hydration (2–3 L water/day) and follow nutritional recommendations.
• Attend all follow‑up appointments for graft checks, physiotherapy, and scar evaluation.

Prevention Tips

Many severe burns are preventable with simple behavioral changes and safety measures:

• Fire safety – Install smoke detectors, keep fire extinguishers accessible, and never leave cooking unattended.
• Hot liquid precautions – Use back burners, turn pot handles away from the edge, test water temperature before bathing children.
• Electrical safety – Repair frayed cords, avoid overloading outlets, use GFCI protection in wet areas, and never touch electrical devices with wet hands.
• Chemical handling – Wear gloves, goggles, and protective clothing; store acids/alkalis in clearly labeled containers.
• Workplace training – Follow OSHA or local occupational‑safety guidelines for industrial burns, use flame‑resistant clothing.
• Sun protection – Apply broad‑spectrum sunscreen (SPF 30+), wear hats and UV‑protective clothing.
• Infant and child supervision – Keep hot beverages, curling irons, and space heaters out of reach.
• First‑aid knowledge – Learn how to cool a burn (run cool water 10–20 min), cover with a clean non‑adhesive dressing, and call emergency services.

Emergency Warning Signs

References

• Mayo Clinic. Burns: First aid. https://www.mayoclinic.org/first-aid/burns/basics/definition/CON-20022097
• American Burn Association. Guidelines for the Management of Burns, 2022.
• World Health Organization. Burn prevention. https://www.who.int/health-topics/burns#tab=tab_1
• Cleveland Clinic. Burn Care: What to Expect. https://my.clevelandclinic.org/health/diseases/16625-burns
• National Institutes of Health, National Library of Medicine. Parkland formula for fluid resuscitation. https://pubmed.ncbi.nlm.nih.gov/21572705/
• Centers for Disease Control and Prevention. Burn Prevention. https://www.cdc.gov/niosh/topics/burns/default.html

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