E-MED 1.3 Evaluation and Management of Burns Reading: Tintinalli Chapters 216 & 217 Skin function o Semipermeable barrier to prevent evaporate water loss* o Environmental protection o Control body temp * This is why partial/full thickness burns can result in disruption of the barrier function and contribute to free water deficits 1. Thermal Injury o Cause range of hemostatic disruption (ex sunburn, spilled coffee) burn shock o Fluid and electrolyte abnormalities seen in burn shock are result of alterations of cell membrane potentials Intracellular influx water and sodium Extracellular migration of potassium o Burns >60% body surface area (BSA) associated with decreased cardiac output non responsive to fluid resuscitation Define the rule of nines and be able to calculate burn percentages. BURN SIZE Quantified as the percentage of the BSA (Body Surface Area) involved ***THE RULE OF NINES*** o Standard percentages for adults o (Modifications for pediatric patients) 2. Describe, define, identify, and recognize the following. 1st BURN Epidermal layer ONLY Skin is red, painful, tender, NO blister formation o Sunburn Heal within 7 days with no scarring Require only symptomatic treatment Extend into the dermis Two types: 2nd BURN 3rd BURN 4th BURN I. Superficial partial-thickness Epidermis & superficial dermis (papillary layer) are damaged. Blistering of skin, exposed dermis is red and moist at blister base o EX: Hot water burn Very painful to touch, good profusion (cap refill intact) Heal in 14-21 days, scarring minimal, full return of function II. Deep partial-thickness Extends deep into dermis (reticular layer) o Damage to hair follicles, sweat and sebaceous glands Skin blistered, exposed dermis is pale white to yellow in color, burned area does not blanch, absent cap refill, absent pain sensation May be hard to to distinguish from 3rd degree burn Heals 3 weeks – 2 months, scarring is common, may need surgical debridement, skin graft to return to normal function Causes: hot liquid, steam, grease, flame Full-thickness Burns Involve entire thickness of skin All epidermal and dermal structures are destroyed Skin is charred, pale, painless and leathery Cause: flame, hot oil, steam, contact with hot objects Will NOT heal spontaneously. Need surgical repair, grafting, significant scarring Extend through skin to the subq, fat, muscle, and even bone. Life threating injuries Need amputation, extensive reconstruction 3. 4. Identify and recognize the necessary considerations regarding the initial evaluation, stabilization, and management of a burn patient. Identify, list and recognize the specific and important components of the history and physical exam for a burn patient initial management in the emergency room. TREATMENT MINOR Localized burn treatment MODERATE-MAJOR 1. Prehospital care (EMS, paramedic, FD) EMS/Paramedic care: Stop the burning process Establish airway Initiate fluid resuscitation Relieve pain Protect burn wound Transport to appropriate facility 2. ED resuscitation and stabilization 3. Admission to hospital or transfer to burn center MINOR BURN = 1st , superficial 2nd i. ii. iii. iv. Tx Plan: ED Management: Isolated (one burn area) Not involved hands, feet, perineum Not across major joints (hip, knee, shoulder) Not be circumferential (ex DIP joint) Provide appropriate analgesics Clean with mild soap and water Debride as needed Apply topical antimicrobial: o 1% SSD (silver sulfadiazine, Silvadene) cream NOT for face, NOT for sulfa allergies o Bacitracin ointment o Triple antibiotic ointment o Aquaphor Consider use of synthetic occlusive dressings Tetanus immunization updated o Esp if deeper than superficial partialthickness burn (20) Provide detailed burn care instructions Direct History o What was burning agent? o Were chemicals involved? o Duration of exposure? o Fire: open vs enclosed space (carbon monoxide)? o Explosion? Blast injury (ex shrapnel)? o Contact with electricity? o Other trauma? o LOC (loss of consciousness)? ABCs: Airway o Re-evaluation of airway o Early intubation Signs of airway burn (mouth, nose), swelling, inhalation injury Breathing o Continuous pulse ox monitor with supplemental O2 o Determine carboxyhemoglobin level Carbon Monoxide o Bronchoscopy if inhalation injury is concern Circulation o Establish TWO large bore (16, 14 gauge IV needle…) access lines (IV/IO-intraosseous) in UNBURNED skin o IV administration of Lactacted Ringer’s (LR) solution using Parkland formula o Cardiac monitoring ADDITIONAL CARE: IN ALL PATIENTS Pulses o ESPECIALLY in those with circumferential/deep burns of the limbs Compartment syndrome!!!! o May need doppler flow testing Escharotomy o For compromise of circulation PAIN CONTROL During emergent treatment, preferred route is IV o Morphine, fentanyl o May need large or frequent doses o Anxiolytic agents used along with pain meds Ongoing treatment: o Codeine, hydrocodone, oxycodone, NSAIDs WOUND CARE 5. 6. Small wounds can be covered with moist-saline soaked dressing Large wounds use (dry) sterile surgical drapes just to cover/protect o Application of saline soaked could cause hypothermia o Avoid sterile dressings in ED as admitting team/transfer facility will have to undress to eval wound Identify and recognize the criteria for admission and transfer for a burn patient. Define and outline the emergency room management and disposition of minor burns. DISPO: Transfer to Burn Unit >20% Partial thickness(>50yo <10yo) >25% Partial thickness (ages 10-50) Full thickness burn >10%, any age Electrical burns Chemical burns Inhalation injury Burn in patients with high risk pre-existing medical conditions Burns with trauma Circumferential limb burns Burns of hands, face, feet, perineum Burns crossing major joints Burns in patients needing social, emotional, long term rehab needs DISPO: Hospitalization Partial thickness 15%-25%, age 10-50 Partial thickness 10%-20%, age <10/>50 Full thickness <10% anyone DISPO: Outpatient Partial thickness <15%, age 10-50 Partial thickness <10% age <10/>50 Full thickness <2%, anyone 7. Identify and recognize the fluid of choice for fluid resuscitation in burn patients. FLUID RESUSITATION Parkland Formula o Adults: LR (lactated ringers) 4mL x weight (kg) x BSA burned over initial 24h Half over first 8 hrs from time of burn Other half over subsequent 16 hrs Example: 154 lb, 40% 2nd and 3rd degree burns 4mL x 70kg x 40* = 11,200 mL over 24 hours 5600mL in the first 8 hours *PERCENTAGE IS NOT CONVERTED TO A DECIMAL, JUST USE THE NUMBER (If pt received fluids (normal saline or LR) before arriving to ED, that amount can be deducted from calculation results) LRs are slightly hypotonic (130 mEq/L sodium), helping to further correct hypovolemia and extracellular sodium deficits. Also contains other electrolytes similar to plasma. • Plasma infusion: tremendous ability to restore intravascular volume 8. 9. Identify, recognize the history and clinical presentation needed to make the diagnosis of smoke inhalation injury. Identify, list and recognize the emergency room treatment for a patient with and/or suspected of having a smoke inhalation injury. INHALATION INJURY Main cause of mortality in burn patients ½ of all fire deaths due to smoke inhalation o Carbon monoxide poisoning (cells can’t get O2) o Edematous airways Thermal injuries below vocal cords only due to steam inhalation o Direct thermal injury limited to upper airway Smoke inhalation will cause mucosal edema o Signs/symptoms (hoarseness, singed nasal hair, soot in mouth, nose) o Early ET (endotracheal) intubation BC the longer you wait the more swelling occurs the harder it is to intubate Indication for ET intubation o Full-thickness burns of the face or peri-oral region o Circumferential neck burns o Acute respiratory distress o Progressive hoarseness o Respiratory depression o Altered mental status o Supraglottic edema and inflammation on bronchoscopy 10. Identify, list and recognize the initial (baseline) diagnostic lab studies which should be obtained for a burn patient. 11. Identify and recognize diagnostic labs which may be indicated in the evaluation of inhalation injury. SECONDARY EXAM Head to Toe assessment o Eyes for corneal burns o Size of burns, depths Routine labs o CBC, BMP (electrolytes, BUN/Cr, glucose) If inhalation suspected: o ABG, carboxyhemoglobin, CXR, EKG, Bronchoscopy Other tests ordered as indicated (ie., trauma) 12. List, identify and recognize the aspects which determine tissue damage in a chemical burn. CHEMICAL BURNS Over 25,000 products are capable of causing chemical burns 5-10% of all US Burn center admissions Deaths rare (<1%) but are usually from result of ingestion Face, eyes, extremities Burns are caused by acids or alkalis ABSORPTION OF CHEMICALS Body Site o Skin folds, surface exposed, mucus membranes Integrity of Skin o Skin breaks, elderly Nature of the Chemical o Acid vs Alkali Occlusion o Clothing, dressing 13. Identify and recognize the substance properties which cause the majority of chemical burns. 14. Briefly identify the general characteristics of an acid burn in contrast to an alkali burn. ACID MOA: coagulation necrosis Less tissue damage Leathery eschar forms which prevents deep penetration of substance Ex: Hydrochloric acid, Sulphuric acid, Nitric acid ALKALI MOA: liquefaction necrosis More tissue damage Deep penetration of substance Ex: Bleach, Sodium hydroxide, Calcium hydroxide, Ammonium hydroxide 15. Identify and recognize the general approach and goals of treatment for chemical burns. Immediately remove any particles/solution / saturated clothing o Contact time with the skin is the most important chemical burn feature that health care professionals may alter o *The amount of time it takes to initiate dilution / removal of chemical agent directly relates to the severity of the injury Wounds irrigated 3 minutes after some exposures have a 2-fold increase in becoming fullthickness burns than those irrigated after 1 minute of exposure. Topical abx Tetanus Morgan Lens – irrigates the eye MSDS (Material Safety Data Sheet) o Contains information on the potential hazards of chemical products. Use, storage, handling, contents 16. Identify and recognize the general characteristics and ED management of other burn considerations including: a. Tar burns Roofing, Asphalt Heated to temps 500F o Burns tend to be more thermal than chemical If hot, tar should be cooled to prevent further thermal injury Use emulsifying agent to remove tar from skin b. Sunburn c. d. Facial burns Circumferential burns