Classifying burn depth accurately
Superficial burns involve only the epidermis. The skin is red, dry and painful, blanches with pressure and heals within a week without scarring. Sunburn is the archetype and these areas are not counted in total body surface area calculations for fluid resuscitation.
Partial-thickness burns extend into the dermis. They are moist, blistered, intensely painful and blanch with pressure. Because nerve endings remain intact and exposed, these are the most painful burns and pain management becomes a genuine nursing priority rather than a comfort afterthought.
Full-thickness burns destroy the epidermis and dermis entirely and may extend into subcutaneous tissue, muscle or bone. The wound appears white, leathery, waxy or charred, does not blanch and is insensate at the centre because nerve endings are destroyed. A common exam trap describes a client with a large white leathery area who denies pain there; the absence of pain is the finding that confirms depth, not evidence that the burn is minor.
| Depth | Appearance | Pain | Healing |
|---|---|---|---|
| Superficial | Red, dry, blanches | Painful | 3–7 days, no scarring |
| Superficial partial-thickness | Moist, blistered, blanches | Very painful | 1–3 weeks, minimal scarring |
| Deep partial-thickness | Mottled pink-white, less blanching | Painful to pressure | 3–6 weeks, scarring likely |
| Full-thickness | White, leathery, charred, no blanch | Insensate centrally | Requires grafting |
Rule of nines and fluid resuscitation
The rule of nines divides the adult body into segments of nine percent: head and neck nine, each arm nine, the anterior trunk eighteen, the posterior trunk eighteen, each leg eighteen, and the perineum one. Children have proportionally larger heads and smaller legs, so paediatric charts adjust these values. Only partial-thickness and full-thickness areas are counted.
The Parkland formula prescribes four millilitres of lactated Ringer's solution per kilogram of body weight per percent of total body surface area burned over the first twenty-four hours. Half of the total volume is given in the first eight hours, calculated from the time of the burn injury, and the remaining half over the following sixteen hours. If a client arrives two hours after injury, that half must be delivered in the remaining six hours.
The number you calculate is only an estimate. Titration is guided by response, and the most reliable bedside endpoint is urine output of thirty to fifty millilitres per hour in an adult, or one millilitre per kilogram per hour in a child. Falling output means under-resuscitation; excessive output may signal over-resuscitation with its own risks of pulmonary oedema and compartment syndrome.
- •Count only partial and full-thickness areas in %TBSA
- •Lactated Ringer's is the standard resuscitation fluid in the first 24 hours
- •Clock starts at the time of injury, not at hospital arrival
- •Urine output is the primary bedside endpoint of adequate resuscitation
Phase-based nursing priorities
In the emergent phase, spanning roughly the first forty-eight hours, the dominant threats are airway obstruction and hypovolaemic shock from massive capillary leak. Assess for inhalation injury, prepare for early intubation if the airway is threatened, establish large-bore access, begin fluid resuscitation, remove constricting jewellery and clothing, and maintain body temperature because burned skin cannot thermoregulate.
In the acute phase, from the end of the emergent phase until wound closure, infection becomes the leading cause of death. Use strict aseptic technique with dressing changes, monitor for a change in wound appearance, odour or surrounding erythema, and remember that fever alone is unreliable in burns because inflammation itself raises temperature. Nutrition is a clinical priority here: burn clients are profoundly hypermetabolic and need high-calorie, high-protein intake to heal.
In the rehabilitative phase the emphasis shifts to function and psychosocial recovery. Positioning to prevent contractures, splinting, early mobility, pressure garments for scar management and honest support around body image are all tested. Contracture prevention favours extension positions over the flexed positions clients naturally adopt for comfort.
Traps that catch candidates on burn items
The first trap is treating the visible wound before the airway. If the stem mentions facial burns, singed nasal hairs, carbonaceous sputum, hoarseness or a fire in an enclosed space, airway assessment and preparation for intubation outrank fluid, dressings and analgesia.
The second trap is misreading circumferential burns. A circumferential full-thickness burn of a limb can act as a tourniquet as oedema develops, producing loss of distal pulses, pallor, paraesthesia and pain. This requires urgent escalation for escharotomy — elevating the limb alone is inadequate.
The third trap is under-treating pain in partial-thickness burns. Intravenous opioids are used during the emergent phase because peripheral perfusion is unreliable and intramuscular absorption is erratic. Withholding analgesia because blood pressure is borderline is rarely the intended answer when the client is in severe pain and adequately resuscitated.