Burns nursing: Parkland formula, rule of nines, and NCLEX

Burns are one of the most complex injury types in acute care nursing. Managing them requires rapid depth classification, accurate total body surface area (TBSA) estimation, precise fluid resuscitation timing, and vigilant monitoring for life-threatening complications. This reference covers all of it: burn depth classification with clinical features, Rule of Nines, Parkland formula with a worked example, inhalation injury assessment, wound care principles, pain management, nursing priorities, complications, and special burn types. Bookmark it before your trauma or critical care rotation.

Burn depth classification

Burn depth determines treatment approach, healing timeline, and whether grafting is required. Classification is based on which skin layers are involved.

Key clinical point: Superficial burns (first-degree) are excluded from TBSA calculations. Only partial-thickness and full-thickness burns are counted when calculating Parkland formula fluid volumes.

Rule of Nines: TBSA estimation

Estimating how much body surface area is burned guides fluid resuscitation, hospital admission decisions, and burn center transfer criteria.

Adult Rule of Nines

Modifications for children

The Rule of Nines is not accurate for children because the head is proportionally larger and the legs proportionally smaller. The Lund-Browder chart is the standard for pediatric TBSA estimation. As a rough adjustment: in infants, the head accounts for 18% TBSA (not 9%), and each leg accounts for 14% (not 18%). The proportions shift progressively toward adult values as the child grows.

Palm method

For scattered or irregular burns that don’t map cleanly to body regions, use the patient’s own palm (fingers together) as a reference: the palm surface equals approximately 1% TBSA. This is useful for estimating small, patchy burns.

Parkland formula: fluid resuscitation

The Parkland formula determines the volume of crystalloid fluid needed in the first 24 hours after a major burn.

Formula:

Total volume (mL) = 4 mL × body weight (kg) × % TBSA burned

• Use lactated Ringer’s solution (LR) – isotonic, similar to extracellular fluid, less hyperchloremic than normal saline
• Count only partial-thickness and full-thickness burns in TBSA
• The 24-hour clock starts from the time of injury, not time of hospital arrival

Timing of infusion:

• First half (50% of total volume) – infuse over the first 8 hours from time of injury
• Second half (50% of total volume) – infuse over the next 16 hours

If the patient arrives at hospital 2 hours after injury, and the first 8-hour window is already partially elapsed, the first-half volume must be delivered in the remaining 6 hours (not re-started from scratch).

Worked example

Patient: 70 kg adult with 35% TBSA partial-thickness burn. Time of injury: 08:00.

1. Calculate total volume: 4 × 70 × 35 = 9,800 mL in 24 hours
2. First half: 9,800 ÷ 2 = 4,900 mL over the first 8 hours (08:00–16:00) = 612 mL/hr
3. Second half: 4,900 mL over the next 16 hours (16:00–08:00 next day) = 306 mL/hr

Important nuance: The Parkland formula is a starting point, not a fixed target. Titrate infusion rate based on urine output – the gold-standard marker of adequate resuscitation. Target urine output: 0.5–1 mL/kg/hr in adults (approximately 30–70 mL/hr in a 70 kg adult).

Current practice has moved to 2 mL/kg/%TBSA

Nursing programs and NCLEX question banks still teach the 4 mL figure, and you should know it. But the American Burn Association’s 2024 Clinical Practice Guidelines on Burn Shock Resuscitation recommend initiating resuscitation at 2 mL/kg/%TBSA in adults with burns over 20% TBSA, specifically to reduce the total volume infused.

The reason is decades of evidence on “fluid creep.” Starting at 4 mL and titrating upward on urine output reliably produced volumes well above the calculated total, and the resulting edema drove abdominal compartment syndrome, extremity compartment syndrome, pulmonary edema, and prolonged ventilation. Starting lower and titrating in either direction produces the same end-organ perfusion with materially less fluid.

What this means at the bedside: the formula sets the opening rate, and hourly urine output sets everything after that. A patient started at 2 mL/kg/%TBSA who is not making urine gets the rate increased – the guideline does not cap the volume, it changes where you begin. Expect exam questions to use 4 mL; expect the burn unit to start at 2 mL and titrate.

Burn assessment and triage

When does a burn need a burn center?

The American Burn Association (ABA) publishes burn center referral criteria, which are a lower threshold than the older “major burn” severity grading many textbooks still reprint. The long-standing criteria include partial-thickness burns covering >10% TBSA, and:

• Any full-thickness burn (third-degree or greater)
• Burns involving face, hands, feet, genitalia, perineum, or major joints
• Circumferential burns of the trunk or extremities
• Inhalation injury (with or without surface burns)
• Electrical (including lightning) or chemical burns
• Burns in patients with significant comorbidities (diabetes, immunosuppression, cardiac disease)
• Burns in patients at the extremes of age (very young children, older adults)

Know the current version for practice. The 2018 eDelphi consensus study, published in the Journal of Burn Care & Research in 2020, revised these criteria in two ways worth knowing. First, it separated the depth thresholds: deep partial-thickness burns ≥10% TBSA and full-thickness burns ≥5% TBSA warrant immediate transfer. Second, it replaced the old yes/no referral decision with a three-tier model – immediate transfer, telemedicine consultation, or outpatient burn clinic referral within seven days – recognizing that not every burn meeting a criterion needs an ambulance. The consensus also defines the older-adult group as ≥55 years rather than the >50 threshold found in older sources, and adds non-burn conditions managed by burn centers: Stevens-Johnson syndrome / toxic epidermal necrolysis with epidermal slough, necrotizing soft-tissue infections, and grade II–IV frostbite.

A common exam trap: the numbers “>20% TBSA in adults, >15% in children or patients over 50” describe the retired ABA burn severity classification, not the referral criteria. If a question asks when to transfer, the threshold is lower than the severity grading suggests.

Initial survey priorities

Burn resuscitation follows the ATLS primary survey. The 11th edition of ATLS, launched in 2025, changed the sequence from ABCDE to xABCDE, moving control of exsanguinating external hemorrhage ahead of airway. For an isolated thermal burn there is rarely exsanguinating hemorrhage, so airway remains the practical first action – but burns are frequently accompanied by blast, blunt, or penetrating trauma, and in those patients catastrophic bleeding is addressed first.

1. x – Exsanguinating hemorrhage – control catastrophic external bleeding (direct pressure, tourniquet) before moving on. New to ATLS 11.
2. Airway – in an isolated burn, the highest priority. Inhalation injury can close the airway within hours of injury. Assess immediately.
3. Breathing – assess chest wall movement; circumferential thoracic burns restrict expansion
4. Circulation – IV access, initiate fluid resuscitation
5. Disability – GCS, neurological status; carbon monoxide poisoning can cause altered mental status
6. Exposure/Environment – remove all clothing and jewelry; prevent hypothermia

Remove all clothing and jewelry immediately – retained items trap heat and conduct electricity in electrical burns.

Inhalation injury

Inhalation injury is the leading cause of death in burn patients and a major burn criterion regardless of surface area involvement. It triples mortality.

Three distinct mechanisms

Upper airway thermal injury: Direct heat causes edema of the supraglottic airway (pharynx, larynx). Edema can progress rapidly and completely obstruct the airway within hours. This is why early intubation – before edema is visible – is often the correct decision.

Tracheobronchial chemical injury: Incomplete combustion products (aldehydes, acids, sulfur dioxide) damage mucosal surfaces below the vocal cords, causing chemical tracheobronchitis and impaired mucociliary clearance.

Carbon monoxide (CO) poisoning: CO binds hemoglobin with 200× the affinity of oxygen, forming carboxyhemoglobin (COHb). Standard pulse oximetry gives falsely normal SpO2 readings – it cannot distinguish oxyhemoglobin from carboxyhemoglobin. Diagnosis requires co-oximetry (ABG with CO-oximeter).

Cyanide toxicity: Cyanide is released by the combustion of synthetic materials – plastics, polyurethane foam, wool, and nylon – commonly found in enclosed-space fires. Cyanide inhibits cytochrome c oxidase (complex IV of the mitochondrial electron transport chain), blocking cellular respiration regardless of oxygen delivery. The result is histotoxic hypoxia: cells cannot use available oxygen, producing severe lactic acidosis. Cyanide toxicity may co-exist with CO poisoning in smoke inhalation patients and should be considered in any patient with an enclosed-space burn who has altered mental status, cardiovascular instability, or a markedly elevated lactate out of proportion to apparent clinical severity.

Signs and symptoms of cyanide toxicity:

• Headache, dizziness, and confusion (early neurological involvement)
• Agitation progressing to loss of consciousness and seizures
• Cherry-red skin or mucous membranes (rare; due to elevated venous oxygen from failure of peripheral oxygen extraction)
• Severe lactic acidosis (lactate >8–10 mmol/L is strongly suggestive in the context of smoke inhalation)
• Cardiovascular collapse: bradycardia, hypotension, refractory dysrhythmias
• The hallmark: metabolic acidosis that persists or worsens despite 100% oxygen therapy

Treatment of cyanide toxicity:

• Hydroxocobalamin (Cyanokit) is the first-line antidote in the United States. A cobalt-containing compound, it binds cyanide in the bloodstream to form cyanocobalamin (vitamin B12), which is renally excreted. Dosing: 5 g IV over 15 minutes in adults, with a further 5 g dose (10 g total) if the clinical response is inadequate.
• Hydroxocobalamin is preferred over the older sodium nitrite + sodium thiosulfate regimen, particularly in patients with suspected concurrent CO poisoning, because sodium nitrite induces methemoglobin – a hemoglobin state that cannot carry oxygen – which compounds hypoxia already caused by CO.
• Sodium thiosulfate (alone, without sodium nitrite) is sometimes used as an adjunct – it provides sulfur substrate for rhodanese enzyme, which converts cyanide to thiocyanate for renal excretion.

Nursing considerations for cyanide toxicity:

• Administer hydroxocobalamin immediately when cyanide toxicity is clinically suspected – do not wait for confirmatory testing. No reliable bedside test exists; diagnosis is clinical.
• Maintain 100% oxygen via non-rebreather mask concurrently – oxygen competition with cyanide at the cytochrome level provides some benefit and treats concurrent CO poisoning.
• Warn staff and be aware that hydroxocobalamin turns the patient’s skin, urine, and mucous membranes bright red (interference from the deep red color of the drug). This is expected and temporary; it will interfere with co-oximetry and pulse oximetry readings during and after administration.
• Monitor arterial blood gas and serum lactate serially. Falling lactate and improving mental status are the primary markers of treatment response.
• Continuous cardiac monitoring is essential – cyanide toxicity can cause any dysrhythmia and progression to cardiac arrest.

Signs and symptoms of inhalation injury

• Facial burns, singed nasal hair, or singed eyebrows
• Carbonaceous (sooty) sputum
• Hoarse voice, stridor, or altered phonation
• Burns in an enclosed space
• Altered mental status, confusion, or headache (CO poisoning)
• COHb level >10% on co-oximetry (symptomatic); >25% severe

Nursing management for inhalation injury

• Place patient on 100% non-rebreather mask immediately – even if SpO2 appears normal
• Prepare for early endotracheal intubation – do not wait for stridor to develop
• Obtain ABG with co-oximetry (not standard pulse oximetry)
• Continuous cardiac monitoring – CO causes dysrhythmias
• Anticipate ICU admission

Fluid resuscitation: nursing management

Fluid resuscitation is time-critical and requires active nursing management throughout the first 24–48 hours.

IV access

Establish two large-bore peripheral IV lines (18-gauge or larger), ideally through unburned skin. If unburned sites are unavailable, IVs may be inserted through burned tissue. Central venous access (for monitoring and drug infusion) and an arterial line (for continuous blood pressure and frequent ABGs) are common in major burns.

Monitoring resuscitation adequacy

Urine output is the primary guide. Insert a Foley catheter immediately and measure output hourly.

• Adult target: 0.5–1 mL/kg/hr (approximately 35–70 mL/hr in a 70 kg adult) – the range the ABA 2024 guidelines titrate to
• Pediatric target: 1 mL/kg/hr
• Urine >1 mL/kg/hr suggests over-resuscitation – reduce infusion rate
• Urine <0.5 mL/kg/hr suggests under-resuscitation – increase infusion rate

Signs of adequate vs. inadequate resuscitation

Over-resuscitation (“fluid creep”) leads to abdominal compartment syndrome, pulmonary edema, and extremity compartment syndrome. Match infusion rate to urine output – don’t blindly follow a fixed rate.

Additional monitoring

• Weigh patient daily (edema accumulation)
• Monitor electrolytes, creatinine, and BUN – acute kidney injury (AKI) is a major complication. For more detail, see AKI nursing reference.
• Monitor for sepsis markers (rising WBC, fever, tachycardia, rising lactate). See sepsis nursing for assessment criteria.
• Vital signs at minimum every hour in the acute phase – see vital signs by age for pediatric baselines.

Wound care

Principles

Burns are contaminated wounds. Goals of wound care are infection prevention, moisture maintenance, protection of healing tissue, and preparation for grafting where needed.

Clean technique (not sterile) is standard for wound dressing changes in most burn units. Wash hands, use clean gloves, and clean the wound gently with chlorhexidine or mild soap and water.

Debridement

• Remove loose, devitalized tissue to reduce infection risk and promote healing
• Enzymatic debriding agents (e.g., collagenase) are used for selective debridement in less critical wounds
• Sharp debridement and surgical excision are performed in the operating room for deep partial-thickness and full-thickness wounds

Topical antimicrobials

Escharotomy

Full-thickness circumferential burns create a rigid, non-compliant eschar. As edema accumulates under the eschar, compartment pressures rise, compromising circulation and (in thoracic burns) ventilation.

Escharotomy – incision through the eschar to release pressure – is performed when:

• Circumferential full-thickness burn of extremities with diminished distal pulses, increasing pain, or paresthesias
• Circumferential thoracic burns with impaired chest wall excursion (rising peak airway pressures in ventilated patients)

Nurses monitor for escharotomy need by checking hourly distal pulses (Doppler if palpation is unreliable due to edema), capillary refill, sensation, and pain levels in burned extremities.

Pain management

Burns cause severe and continuous pain from two sources: background pain from exposed nerve endings in partial-thickness wounds, and procedural pain from dressing changes and debridement.

Background pain

• IV opioids (morphine, hydromorphone, fentanyl) are first-line for major burns in the acute phase
• Titrate to pain score; under-treatment is a documented problem in burn care
• Adjuncts: IV ketamine (sub-anesthetic doses), IV acetaminophen, gabapentin (reduces neuropathic component)

Procedural pain management

Dressing changes produce the most intense, predictable pain events. Pre-medicate 20–30 minutes before the procedure:

• IV opioid bolus
• IV ketamine (dissociative analgesia at 0.3–0.5 mg/kg; full dissociation at 1–2 mg/kg)
• Anxiolytics (benzodiazepines) for anxiety and procedural distress
• Nitrous oxide in some settings

Non-pharmacological approaches

Music therapy, virtual reality distraction, guided imagery, and cold therapy (room temperature water for superficial burns only – never ice, which causes vasoconstriction and frostbite) all have evidence for reducing procedural pain perception in burns. These are adjuncts, not replacements for adequate analgesia.

Nursing priorities

The following priorities apply to major burn care. The sequence reflects urgency – airway failure kills faster than infection.

1. Airway patency and breathing – assess for inhalation injury; apply 100% O2; prepare for intubation; monitor for CO poisoning. This is always first.
2. Hemodynamic stability and fluid resuscitation – establish large-bore IV access; initiate Parkland formula LR infusion; insert Foley; begin hourly urine output monitoring.
3. Wound covering – cover burns with clean, dry dressings or sheets to reduce heat loss and contamination while assessment and resuscitation proceed. Formal wound care follows stabilization.
4. Pain management – administer IV opioids; assess pain at every assessment. Untreated pain causes catecholamine surge, increasing metabolic demand.
5. Hypothermia prevention – burn patients lose thermoregulation rapidly. Remove wet dressings, maintain warm room temperature (28–32°C in major burns), use warmed IV fluids, and apply warming blankets. Hypothermia worsens coagulopathy and acidosis.
6. Infection prevention – sterile/clean technique for all wound care; topical antimicrobials as prescribed; surveillance for wound infection, bacteremia, and sepsis.
7. Nutritional support – burns cause extreme hypermetabolism. Early enteral nutrition (within 6–12 hours of injury) is recommended to preserve gut barrier function, reduce infection risk, and support wound healing. Consult dietitian for caloric targets (Curreri formula or indirect calorimetry).
8. Psychological and emotional support – burns produce disfigurement, loss of function, and profound psychological trauma. Assess for acute stress reaction; involve social work and psychology early. Family support and communication are part of nursing care.

Complications to monitor

For more on ARDS assessment, see ARDS nursing. For AKI management detail, see AKI nursing reference.

Special burn types

Chemical burns

Chemical burns continue to injure tissue as long as the chemical remains in contact with skin. The immediate priority is removal of the chemical – not identification or neutralization.

• Remove all contaminated clothing immediately (protect self with gloves)
• Irrigate with copious running water for at least 20–30 minutes (60 minutes for alkali burns, which penetrate deeper)
• Do not attempt to neutralize the chemical (acid + base reactions generate heat, worsening injury)
• Alkali burns (lye, concrete, cleaning agents) are typically more severe than acid burns because they cause liquefactive necrosis and penetrate more deeply
• Eye involvement: irrigate immediately and continuously; ophthalmology consult
• Systemic absorption of some chemicals (hydrofluoric acid, phenol) causes life-threatening toxicity – contact Poison Control

Electrical burns

Electrical burns are deceptive – the surface wound is often small, but internal injury can be massive as current travels through tissue.

• Entry and exit wounds – identify both; the exit wound is often larger and on a grounded extremity
• Cardiac monitoring – electrical injury causes dysrhythmias; continuous ECG monitoring for at least 24 hours after significant exposure
• Rhabdomyolysis – muscle destruction releases myoglobin; causes acute tubular necrosis and AKI. Look for dark (“cola”) urine; urine myoglobin/CK elevated. Target higher urine output (1–1.5 mL/kg/hr) to flush myoglobin through the kidneys. Sodium bicarbonate may be added to alkalinize urine.
• Compartment syndrome risk is high in electrical burns – monitor extremities carefully
• Spinal precautions – electrical injury can cause tetanic muscle contractions strong enough to fracture vertebrae; consider C-spine precautions after high-voltage exposure
• High-voltage (>1,000 V) carries the highest risk of internal injury and cardiac arrest

Circumferential burns

Burns that encircle an entire extremity or the trunk create a rigid eschar that does not expand with underlying edema.

• Extremity circumferential burns: Rising compartment pressure compresses vessels and nerves. Monitor hourly: distal pulses (by Doppler), capillary refill, sensation, and pain. Escharotomy is required if perfusion is compromised.
• Thoracic circumferential burns: The rigid eschar restricts chest wall movement, leading to progressively worsening respiratory failure (rising airway pressures in ventilated patients, declining tidal volumes, hypoxia). Bilateral thoracic escharotomies restore chest compliance.
• Abdominal compartment syndrome: Large-volume resuscitation combined with abdominal burns or intra-abdominal injury can elevate intra-abdominal pressure. Monitor bladder pressure if suspected.

Related pages

For assessment and clinical context related to burns:

• Head-to-toe assessment – systematic assessment approach applicable to the burn survey
• Wound assessment – wound classification, staging, and documentation
• Vital signs by age – pediatric normal ranges for triage and monitoring
• Sepsis nursing – sepsis recognition and management (a primary complication of major burns)
• AKI nursing reference – acute kidney injury assessment and management
• ARDS nursing – respiratory failure assessment and ventilator management

Nurses who specialize in burn care work within dedicated burn centers and trauma units. The burn nurse career guide covers the specialty’s certification pathway (CBRN), practice settings, and scope. Hyperbaric oxygen therapy is frequently used as adjunctive treatment for burns and carbon monoxide poisoning; the hyperbaric nurse career guide covers this related specialty. Salary data for both roles is available at burn nurse salary and hyperbaric nurse salary.

Clinical content verified against the American Burn Association’s 2024 Clinical Practice Guidelines on Burn Shock Resuscitation, the 2018 eDelphi burn center referral criteria consensus, the ABLS 2023 provider manual, ATLS 11th edition (2025), and Herndon and Sood’s Total Burn Care (6th ed., 2026). All content is intended for educational purposes for nursing students; clinical decisions require individualized assessment by a licensed provider.

References

1. American Burn Association. Advanced Burn Life Support (ABLS) Provider Manual. 2023 ed. American Burn Association; 2023.
2. Herndon DN, Sood R, eds. Total Burn Care. 6th ed. Elsevier; 2026. ISBN 9780323883894.
3. Cartotto R, Johnson LS, Savetamal A, et al. American Burn Association Clinical Practice Guidelines on Burn Shock Resuscitation. J Burn Care Res. 2024;45(3):565–589. doi:10.1093/jbcr/irad125
4. Bettencourt AP, Romanowski KS, Joe V, et al. Updating the Burn Center Referral Criteria: Results From the 2018 eDelphi Consensus Study. J Burn Care Res. 2020;41(5):1052–1062. doi:10.1093/jbcr/iraa038
5. Pham TN, Cancio LC, Gibran NS; American Burn Association. American Burn Association practice guidelines burn shock resuscitation. J Burn Care Res. 2008;29(1):257–266. doi:10.1097/BCR.0b013e31815f3876
6. American College of Surgeons Committee on Trauma. Advanced Trauma Life Support (ATLS) Student Course Manual. 11th ed. American College of Surgeons; 2025.
7. ATLS Subcommittee; American College of Surgeons’ Committee on Trauma; International ATLS Working Group. Advanced Trauma Life Support (ATLS): the ninth edition. J Trauma Acute Care Surg. 2013;74(5):1363–1366. doi:10.1097/TA.0b013e31828b82f5 (historical – superseded by the 11th edition)
8. Baxter CR, Shires T. Physiological response to crystalloid resuscitation of severe burns. Fluid volume and electrolyte changes of the early postburn period. Clin Plast Surg. 1974;1(4):693–709. doi:10.1016/S0094-1298(20)30126-7 (Parkland formula original citation)
9. Walker PF, Buehner MF, Wood LA, et al. Diagnosis and management of inhalation injury: an updated review. Crit Care. 2015;19(1):351. doi:10.1186/s13054-015-1077-4
10. Fortin JL, Giocanti JP, Ruttimann M, Kowalski JJ. Prehospital administration of hydroxocobalamin for smoke inhalation–associated cyanide poisoning: 8 years of experience in the Paris Fire Brigade. Clin Toxicol (Phila). 2006;44(Suppl 1):37–44. doi:10.1080/15563650600811870
11. Hall AH, Saiers J, Baud F. Which cyanide antidote? Crit Rev Toxicol. 2009;39(7):541–552. doi:10.1080/10408440802304944
12. Borron SW, Baud FJ, Barriot P, Imbert M, Bismuth C. Prospective study of hydroxocobalamin for acute cyanide poisoning in smoke inhalation. Ann Emerg Med. 2007;49(6):794–801. doi:10.1016/j.annemergmed.2007.01.026
13. Arnoldo BD, Purdue GF. The diagnosis and management of electrical injuries. Hand Clin. 2009;25(4):469–479. doi:10.1016/j.hcl.2009.06.001
14. Chong HP, Quinn L, Jeeves A, et al. A comparison study of methods for estimation of a burn surface area: Lund and Browder, e-burn and Mersey Burns. Burns. 2020;46(2):483–489. doi:10.1016/j.burns.2019.08.014
15. Jeschke MG, van Baar ME, Choudhry MA, Chung KK, Gibran NS, Logsetty S. Burn injury. Nat Rev Dis Primers. 2020;6(1):11. doi:10.1038/s41572-020-0145-5
16. Rousseau AF, Losser MR, Ichai C, Berger MM. ESPEN endorsed recommendations: nutritional therapy in major burns. Clin Nutr. 2013;32(4):497–502. doi:10.1016/j.clnu.2013.02.012
17. Herdman TH, Kamitsuru S, Takáo Lopes C, eds. NANDA International Nursing Diagnoses: Definitions and Classification, 2024–2026. 13th ed. Thieme; 2024.