Burns Objectives Incidence and patterns of burn injury Pathophysiology of local and systemic responses to burn injury Classify burn Physical exam of the burned patient Prehospital management of burned patient Signs and symptoms of inhalational injury which may influence management Criteria for transport to a Burn Center Incidence and Pattern of Burn Types Tissue injury caused by thermal, electrical, radiation or chemical agents Burns are another form of trauma Associated with high mortality, lengthy rehabilitation. Greater than 2 million people/yr. seek care for burns. Morbidity and Mortality follow significant patterns regarding gender, age, and socioeconomic status Skin Largest body organ. Not a passive organ. – Protects underlying tissues from injury – Temperature regulation – Acts as water tight seal – Sensory organ Very young and old have thin skin thus short contact time = greater damage when compared to mid aged persons Skin concerns after burns Infection Problems with thermal regulation Inability to maintain normal water balance Skin layers Two layers – Epidermis – Dermis Epidermis – Outer cells are dead – Protective barrier and water tight seal – Deeper layers contain pigment to protect against UV radiation and produce stratum corneum Skin Layers Dermis – Consists of tough, elastic tissue which contains specialized structures such as hair follicles, sweat glands, blood vessels, oil glands, and nerve endings Burns 34-8 Burn Types • Thermal (exposure to heat) – Examples: flame, scald, flash • Chemical – Examples: acids, alkalis • Electrical (including lightning) • Radiation 34-9 Burn Severity • • • • • Depth Extent Location Patient age Conditions present before the burn • Associated factors 34-10 Burn Depth • Superficial (first-degree) burn • Partial-thickness (second-degree) burn • Full-thickness (thirddegree) burn 34-11 Depth of burn Partial thickness burn = involves epidermis Deep partial thickness = involves dermis Full thickness = involves all of skin Classification of Burns First degree / superficial burnpainful, red, and dry and blanch with pressure. Superficial (First-Degree) Burn • Involves only epidermis • Minor tissue damage • Skin red, tender, very painful – No blistering • Does not usually require medical care • Heals in ~2 to 5 days 34-14 Superficial (First-Degree) Burn 34-15 Partial thickness burns Sunburn is a very superficial burn. Expect blistering and peeling in a few days. Maintain hydration orally. Heals in 3-6 days- generally no scaring Topical creams provide relief. No need for antibiotics Partial-Thickness (Second-Degree) Burn • Extends through epidermis into dermis • Intense pain • Some swelling • Blistering may be present • Skin pink, red, or mottled • Heal in ~5 to 35 days 34-17 Classification of Burns 2nd degree / partial thickness burncharacterized by blisters, injury extends through the dermis to the epidermis, basal layers of skin are not destroyed Partial-Thickness (Second-Degree) Burn 34-19 Deeper partial thickness Blisters are typical of partial thickness burns. Don’t be in a hurry to break the blisters. Heals in 14-21 days Blisters provide biologic dressing and comfort. Once blisters break, red raw surface will be very painful. Full-Thickness (Third-Degree) Burn • Destroys epidermis, dermis • Skin color varies • Looks dry, waxy, or leathery • Numb – nerve endings destroyed • Rapid fluid loss 34-21 Classification of Burns 3rd degree / full thickness burns- Entire thickness of dermis and epidermis is destroyed. Wound characterized by coagulatin necrosis and appears pearly white, charred or leathery. Sensation and cap refill are absent. Full-Thickness (Third-Degree) Burn 34-23 Deeper partial thickness Blisters are typical of partial thickness burns. Don’t be in a hurry to break the blisters. Heals in 14-21 days Blisters provide biologic dressing and comfort. Once blisters break, red raw surface will be very painful. Mixed partial and full thickness Central yellow area might be full thickness. Outer edges are probably partial thickness. Initial management is the same. Later will need skin grafts for the full thickness areas. Zones of Burn Wounds Zone of Coagulation devitalized, necrotic, white, no circulation Zone of Stasis ‘circulation sluggish’ may covert to full thickness, mottled red Zone of Hyperemia outer rim, good blood flow, red Wound excision until fine punctate bleeding occurs Factors which affect Burn injury Water content Skin thickness Skin pigment Presence of absence of insulating substances Peripheral circulation Tissue damage depends on temperature and time Surface temperature of 44 C (111 F) begins to produce burns. But is dependent on exposure time. Temperature >44C and < 51C (124F) the rate of epidermal necrosis doubles with each degree of temperature increase. At > 70 C (185F) or greater, exposure time required to cause transepidermal necrosis is less than 1 second. Normal process of water evaporation is accelerated 5 to 15 time to that of normal skin. Pathophysiology of Burns (Local response) Based on Jackson’s thermal wound theory Zone of hyperemia – Increased blood flow due to normal inflammatory response Zone of stasis – Potentially viable tissue – Cells are ischemic due to clotting and vasoconstriction Zone of coagulation – Coagulation necrosis has occurred – Tissue is non viable Extent of Burn Key Points • Only partial-thickness and full-thickness burns are included when calculating extent of a burn • Extent of the burned area is important to determine – The depth of the burn must also be considered, although superficial burns are not included in the calculation of the extent of a burn 34-31 Extent of Burn Rule of Nines • “Rule of Nines” – Guide used to estimate body surface area burned – Divides adult body into 9%, or multiples of 9%, sections – Modified for children and infants 34-32 Extent of Burn Rule of Nines Body Area Head and neck Front of trunk Back of trunk Each arm (shoulder to fingertips) Each leg (groin to toe) Genitals Adult 9% 18% 18% 9% Child 18% 18% 18% 9% Infant 18% 18% 18% 9% 18% 1% 13.5% 13.5% 1% 1% 34-33 Extent of Burn Rule of Nines 34-34 Extent of Burn Rule of Palms • “Rule of Palms” can be used for: – Small or irregularly shaped burns – Burns scattered over the body • Palm of patient’s hand equals 1% of patient’s body surface area 34-35 Burns Best Treated in a Burn Center • Second-degree burns involving over 10% total body surface area (TBSA) in adults or 5% TBSA in children • Chemical burns • All burns involving hands, face, eyes, ears, feet, or genitals • Circumferential burns of the torso or extremities • Any third-degree burn in a child • All inhalation injuries • Electrical burns, including lightning injury • All burns complicated by fractures or other trauma • All burns in high-risk patients including older adults, the very young, and those with preexisting conditions such as diabetes, asthma, and epilepsy 34-36 Care of small burns What can YOU do? Care for Thermal Burns • If patient still in area of heat source, move to safe area • If clothing is in flames – stop, drop, and roll • Remove smoldering clothing and jewelry – Cut around areas where clothing is stuck to skin 34-38 Primary Survey • Stabilize cervical spine if needed • Was the patient in a confined space and exposed to smoke, flames, or steam? – How long was he exposed? – Did he lose consciousness? – Were hazardous chemicals involved? – Be alert for potential airway problems 34-39 Burn injuries (Primary Survey) Recall that burn patients are first and foremost trauma patients Circulation Airway Breathing Disability Exposure Airway Airway control – Chin lift – Jaw thrust – Insert oral pharyngeal airway – Assess need for ET intubation Maintain in-line cervical immobilization in patients at risk Breathing Listen: verify breath sounds Assess rate and depth of respirations Administer high flow O2 Monitor chest wall excursion in presence of full thickness torso burns Inhalational injury Present in 10 – 20 % of burn patients Identified in 60 – 70 % of patients who die in burn centers Inhalation Injury • • • • Facial burns Soot in the nose or mouth Singed facial or nasal hair Swelling of lips or inside mouth • Coughing • Inability to swallow secretions • Hoarse voice 34-44 Airway assessment and management Humidified 100% O2 by mask Endotracheal intubation indicated if – Airway obstruction imminent as signaled by progressive hoarseness and/or stridor – LOC is such that airway protective reflexes are impared Warning signs/clues Facial burns, singed nasal hairs Carbonaceous sputum Tachypnea, intercostal retractions Hoarsness Agitation (hypoxia) Rales, rhonchi, diminished breath sounds Inability to swallow Naso or oro-pharynx erythema Circulation Monitor BP, pulse rate, skin color Establish IV access – If possible, place iv in non-burned skin, but may place it in burned skin if needed. – How would you secure IV in burned tissue? Assess circulatory status of circumferentially burned extremities Disability, Neurologic Deficits Typically alert and oriented. If not, why not? Remember AVPU? – A-Alert – V-Responds to verbal stimuli – P-Responds to painful stimuli – U-Unresponsive Disability, Neurologic Deficits Please remember before you intubate, if possible, to get any pertinent history – AMPLE history – A – Allergies – M – Medications – P – Previous medical/surgical history – L – Last meal (time) – E – Events/environment surrounding the injury; ie. Exactly what happened Exposure/Environmental control First must remove patient to a safe area Stop the burning process – Exstinguish fire – cool smoldering areas – Remove ALL clothing and ALL jewelry – Cut around areas where clothing is stuck to the skin – Cool adherent substances (Tar, Plastic) Exposure/Environmental control Once patient in safe area Maintain patient’s temperature – Warm room or rig – Keep patient covered; dry sheets, blankets – Warm IV fluids Circumstances of Injury Circumstances of Injury: Flame How did it occur? – Inside or outside? – Clothing ignition? – Time to extinguish flame? – Extinguished how? – Gasoline or other fuel involved? – Explosion? Patient thrown? – Are purported circumstances of injury consistent with burn characteristics? Circumstances of Injury: Flame Structure fire? Smoke filled space? Others injured or killed in event? Was there LOC at the scene? How did the patient escape – Did the patient jump? How far was the drop? – Through glass? Circumstances of Injury: Flame Automobile crash? How badly was the car damaged? Other injuries? Did they hit anybody? Check around, under the vehicle. Car fire? Circumstances of Injury: Scald What is the history of the injury? – What was the liquid? – What was the volume of liquid involved? – What was the temperature of the liquid? If tap water, what was the heater temperature setting? If heated by other source, was the liquid boiling – – – – Was the patient wearing clothing? How quickly was it removed? Was the burned area cooled? Was other first aid administered? Circumstances of Injury: Scald Is abuse or neglect suspected? – How quickly was care sought? – Where did the burn occur? – Who was with the patient when the injury occurred? – Does the story fit the injury? Circumstances of Injury:Chemical Circumstances of Injury:Chemical What was the agent? Is it still around? Vapor?, Liquid?, Solid? How did the exposure occur? What was the duration of contact? What decontamination occurred? Was there an explosion? Was the patient thrown? What is the toxicity of the agent? Chemical Burns • Degree of injury is based on: – Mechanism of action of the chemical – Strength of the chemical – Concentration and amount of the chemical – How long the patient was in contact with the chemical – Body part in contact with the chemical – Extent of tissue penetration 34-60 Care for Chemical Burns • Scene size-up – Gloves, eye protection, other PPE as necessary – Additional resources may be needed before you can safely enter the area 34-61 Care for Chemical Burns • General impression / primary survey – Manage airway and breathing – Stabilize cervical spine if needed – Remove patient’s jewelry – Remove clothing, including shoes and socks 34-62 Care for Chemical Burns • Stop the burning process – Brush off dry chemicals • Brush chemical away from the patient – Flush the burn with large amounts of room temperature water • Use low pressure • Flush for at least 20 minutes • Treat other injuries, if present 34-63 Eye Chemical Burn • Most urgent eye injury • Damage depends on: – Type and concentration of the chemical – Length of exposure – Elapsed time until treatment 34-64 Early Signs of a Chemical Burn • Pain • Redness • Irritation • Tearing • Inability to keep eye open • A sensation of “something in my eye” • Swelling of the eyelids • Blurred vision 34-65 Chemical Burn to the Eye • Emergency care – Ask patient to remove contact lenses, if present – Immediately flush the eye with water or normal saline – Continue flushing for at least 20 minutes – Flush away from the unaffected eye 34-66 Circumstances of Injury:Electrical What kind of current was involved? What was the duration of contact? Was the patient thrown or did the patient fall? What was the estimated voltage? Was there LOC? Was CPR administered? Circumstances of Injury:Electrical The great pretender – Small surface injuries may be associated with severe internal injuries – Causes about 1000 deaths/yr. Electrical Burns • Severity of an electrical injury is related to: – Amperage (current flow) – Voltage (current force) – Type of current (AC/DC) – Current pathway through the body – Resistance of tissues to current – Duration of contact 34-69 Electrical Burns • Skin normally resists the flow of electric current into the body – Electricity entering the body is converted to heat – Current follows paths of least resistance • Blood vessels, nerves, muscles 34-70 Care for Electrical Burns • Make sure the power is off! • Contact additional resources if needed before entering the area 34-71 Care for Electrical Burns • Manage ABCs • Stabilize cervical spine if needed • Watch closely for respiratory and cardiac arrest – Make sure an AED is available 34-72 Care for Electrical Burns • • Treat other injuries if present Look for entrance and exit wounds 34-73 First contact After patient in safe area… Complete head to toe exam Pre-existing medical conditions? Tetnus status? Other injuries? Determine Burn Severity You must assess % of body surface area (BSA) involved Depth of injury (1st, 2nd, or 3rd degree) – Realize that this is difficult to do as burns may “mature” over time AND getting an exact percentage is usually not possible Age of patient Associated / pre-existing disease or illness Burns to hands, face, genitalia. Extent of Burn Initial estimate of 2nd and 3rd degree burns: “rule of nines” – Adult areas = 9% BSA or multiples – Not accurate for infants/children due to larger BSA of head and smaller BSA of legs. To estimate scattered burns, palm of hands and fingers of patient = 1% BSA Burn Depth Very young and very old patients have thinner skin Therefore, contact time at similar temperatures will be worse for them. Pre-hospital management principles Stop the burning process Universal precautions Initiate fluid resusucitation per the consensus protocol: – – – – 2 - 4 ml % BSA burn ½ in 1st 8 hrs ½ over next 16 hrs *this is for adults only, pediatric patients require consensus formula + D5LR maintenence fluids Pre-hospital management principles Vital signs Assess extremity perfusion – * remove all rings, watches, other jewelry – *Elevation of burned areas if possible Ventilation status Pain relief/management Initial Burn Wound Care Thermal burns – Cover with clean, DRY cloth – NO ice or cold water soaks Initial Burn Wound Care Electrical Injury – Be aware of both cutaneous an internal injury Entrance and exit points versus contact points Arcing wounds vs electrical flash wounds – Consider electrical current cardiac effects Initial Burn Wound Care Chemical burns – Scene control – Brush powders from skin and clothes Watch shoes and socks – Remove contaminated clothing – Flush with COPIUS amounts of water – Eye irrigation if involved – Exposure protection for yourselves and anyone involved with patient care Burn center referral criteria The ABA identifies the following as injuries requiring a Burn Center referral: – 2nd degree burns > 10% TBSA – Burns to face, hands, feet, genitalia, perineum, major Joints – 3rd degree burns – Electric injury (lightning included) – Chemical burns Burn center referral criteria Inhalational injuries Burns accompanied by pre – existing medical conditions Burns accompanied by trauma, where burn injury poses greatest risk of morbidity or mortality Burns to children in hospitals without pediatric services Patients with special social, emotional or rehabilitative needs Summary Be able to assess injuries Be able to develop priority – based plan of care Base care plan on type, extent, degree of burn Consult with a burn center physician Decide upon local treatment and transport with burn center physician Physical Examination • Check pulses in all extremities – Circumferential burn can act as a tourniquet • After all immediate life-threats have been managed, care for the burn itself 34-86 Physical Examination • • • • Quickly determine burn severity Vital signs Medical history Questions related to the burn: – How long ago did the burn occur? – How did it occur? – What was done to treat the burn before you arrived? 34-87 Treat the Burn • Cool the burn with cold water • Cover burned area with a dry dressing or sheet • Keep patient warm – Cover with clean, dry sheets • Remove all jewelry • Look for other injuries – Treat and immobilize possible fractures – Treat soft-tissue injuries if present – Treat shock if present • Keep burned extremities elevated above the heart • Transport to closest appropriate facility 34-88 Treat the Burn • Do not apply ice, butter, oils, sprays, lotions, or ointments to a burn • If a blister has formed, do not break it – Loosely cover the blister with a sterile dressing • Do not place ice or wet sheets on a burn • Do not transport a burn patient on wet sheets, wet towels, or wet clothing 34-89 Infant / Child Considerations • Larger BSA than adults in relation to total body size – Greater fluid and heat loss • More likely to develop shock or airway problems than adults • Consider possibility of abuse when treating a burned child • Report all suspected cases of abuse to appropriate authorities 34-90 Care of small burns Clean entire limb with soap and water (also under nails). Apply antibiotic cream (no PO or IV antibiotic). Dress limb in position of function, and elevate it. No hurry to remove blisters unless infection occurs. Give pain meds as needed (PO, IM, or IV) Rinse daily in clean water; in shower is very practical. Gently wipe off with clean gauze. Blisters In the pre-hospital setting, there is no hurry to remove blisters. Leaving the blister intact initially is less painful and requires fewer dressing changes. The blister will either break on its own, or the fluid will be resorbed. Blisters break on their own Upper arm burn day 1 day 2 Burn “looks worse” the next day because of blisters breaking and oozing Upper arm burn 121 Blisters show probable partial thickness burn. Area without blister might be deeper partial thickness. Debride blister using simple instruments Medic debriding blister After debridement Before and after debridement Removing the blister leaves a weeping, very tender wound, that requires much care. Silver sulfadiazene Arm burn 4 days Arm burn 7 days – note the exudate Foot burn debridement Before debriding and applying cream, clean entire foot (including toes and nails). Silver- impregnated dressings (Silverlon) Apply wet silver dressing directly on the burn. Creams or dressings under the silver dressing impede the antimicrobial action. Keep it moist! Remove it, rinse it out, replace it on the burn. Steps in using silver-impregnated dressings Clean the burn and surrounding area. Soak silver-impregnated dressing and gauze in STERILE WATER or BOTTLED DRINKING WATER Apply silver-impregnated dressing (over-lapping edges are best). Wrap with the moist gauze. Secure with mesh, gauze, or tape. Keep it moist with WATER, every 12h or so More frequent in hot arid environments pics Soak silver dressings and gauze in WATER (not saline). Apply the silver dressing. Wrap with moist gauze. Secure with mesh, gauze, or tape. First few days Moisten dressing with WATER every 12h or so. Remove outer gauze and silver dressing every day. Inspect the burn. Rinse exudate off burn. Rinse exudate off silver dressing with WATER. Return same silver dressing to the burn. Apply new outer gauze moistened with WATER. pics Moisten well to remove it each day. Rinse it out, and put it back on the burn. Moisten with WATER q12h or so. After several days Replace silver dressing every 2 - 5 days depending on amount of exudate, cellular debris First wet the silver dressing before removing it. Don’t pull on it if it’s stuck – moisten it more. Apply new moist silver dressing and gauze. QUESTIONS ABOUT SMALL BURNS? SUMMARY Describe the differences between partial and full-thickness burns. Describe how to estimate the size of a burn. Describe initial care of small burns. Describe follow-up and post-burn care. NEXT TOPIC - BURNS OF SPECIAL AREAS Burns of special areas of the body Face Mouth Neck Hands and feet Genitalia Face Be VERY concerned for the airway!! Eyelids, lips and ears often swell alarmingly. In fact, they look even worse the next day. But they will start to improve daily after that. Cleanse eyes with warm water or saline. Apply antibiotic ointment or liquid tears until lids are no longer swollen shut. Bacitracin cream/ointment will serve Hands and feet This is rather deep and might require grafting. But initial management is basic. Dressings should not impede circulation. Leave tips of fingers exposed. Keep limb elevated. Hands and feet Fingers might develop contractures if active measures are not taken to prevent them. Infant / Child Considerations 34-114 Older Adult Considerations • Mechanisms and severity of burn injury related to: – Living alone – Wearing loose-fitting clothing while cooking – Falling asleep while smoking – Declining vision, hearing, and sense of smell – Slowed reaction time – Problems with balance and/or memory 34-115 Escharotomy Eschar = burned skin Escharotomy = cut burned skin to relieve underlying pressure Similar to bivalving a tight cast. Cut along inside and outside of limb from good skin to good skin Knife can be used, or cautery. Use local or no anesthesia. (Full-thickness burn should have no sensation, but underlying tissues do!) Escharotomy of forearm Incise along medial and/or lateral surfaces. Avoid bony prominences. Avoid tendons, nerves, major vessels. Escharotomy Patient had escharotomy of both legs. Incisions will heal. They will not be closed by DPC. These large burns are often treated by the “open” technique, that is, without dressings. Electrical burn Outer skin might not appear too bad. But heat was conducted along the bone. Causes the most damage. Burns from inside out. Usually requires fasciotomy Fasciotomy Fascia = thick white covering of muscles. Fasciotomy = fascia is incised (and often overlying skin) Skin and fascia split open due to underlying swelling. Blood flow to distal limb is improved. Muscle can be inspected for viability. Dressing and Bandaging 34-121 Dressing and Bandaging • Dressing – Absorbent material placed directly over a wound • Bandage – Used to secure a dressing in place 34-122 Dressing and Bandaging • Functions of dressing and bandaging wounds: – Help stop bleeding – Absorb blood and other drainage from the wound – Protect wound from further injury – Reduce contamination and risk of infection 34-123 Dressings • A dressing should be: – Lint free – Large enough to cover the wound • Should extend beyond wound edges – Sterile whenever possible – Applied directly over the wound • Do not slide it in place 34-124 Types of Dressings 34-125 Sterile Gauze Pads • Loosely woven material • Classified by size in inches –2x2 –4x4 34-126 Trauma Dressing • Thick dressing • Various sizes • Two layers of gauze with absorbent cotton in center • Uses – Large wounds – Pad injured limb inside a splint 34-127 Occlusive Dressing • Made of nonporous material • Used to cover open wound and make airtight seal – Chest wound – Neck wound 34-128 Nonadherent Pads • Gauze pads with special coating • Used to cover leaking open wound but not stick to it 34-129 Eye Pads • Uses: – Cover eyes after minor eye injury – Cover small wound, such as a puncture 34-130 Bandages 34-131 Bandages • Applied to keep a dressing in place • Does not have to be sterile • Before applying to an extremity: – Remove patient’s jewelry – Check pulse distal to the wound 34-132 Roller Gauze (Kling) • Secures dressing in place – 1-inch roll for fingers – 2-inch roll for wrists, hands, feet – 3-inch roll for elbows, upper arms – 4- to 6-inch roll for ankles, knees, legs 34-133 Roller Bandage • • Soft, slightly elastic material Available in various widths 34-134 Elastic Bandage • Do not use to secure a dressing in place • May act as a tourniquet if injured area swells 34-135 Triangular Bandage • Large piece of muslin • When folded, can be used as a bandage or sling 34-136 Self-Adherent Wrap • Elastic wrap coated with self-adhering material • Often used as a pressure bandage 34-137 Pressure Bandage • Applied over a wound site to control bleeding • Cover the wound with a dressing • Apply direct pressure until the bleeding is controlled • Secure the dressing in place with a bandage • Assess the pulse distal to a bandage 34-138 Applying a Roller Bandage 34-139 Applying a Roller Bandage 34-140 Applying a Roller Bandage 34-141 Applying a Roller Bandage 34-142 Head or Ear Bandage 34-143 Upper Arm Bandage 34-144 Elbow Bandage 34-145 Wrist or Forearm Bandage 34-146 Knee Bandage 34-147 Foot or Ankle Bandage 34-148