exam 3 Flashcards
three phases of burn care
- emergent
- acute
- rehabilitative
emergent phase of burn care
the time of the injury up to 72 hours- FIRST 24 HOURS IS MOST CRITICAL
-focus on stabilization and transportation to the burn unit
-hypovolemia= massive fluid shift out of the intravascular compartment (hemodynamic shift may lead to hypovolemia)
acute phase of burn care
time in the hospital! from the ED to the floor to get taken care of
-focus on wound care, pain management, infection control, and nutrition- we need to promote healing!
rehabilitative phase of burn care
POST hospital discharge
-focus on scar management, corrective surgery, ongoing rehabilitation (contracture prevention, stretching, strengthening), adaptation to new disabilities, emotional support, and education.
burn definition/pathophysiology and types
a burn injury results when the tissues of the body are damaged by a heat source
types:
-thermal
-electrical
-chemical
-radiation
thermal burns
flash, scald, or contact with hot objects or flames
-temperature and duration- depends on these factors of the agent
-house fires, care fires, cooking accidents
electrical burns
electricity passes through the body, potential to cause damage to multiple organs. wide spectrum of injuries, mild to lethal.
-extensive burns that may even require amputation
-power lines- gas and electrical workers!
chemical burns
acids, alkalines, organic compounds- industrial or household
radiation burns
industrial use of ionizing radiation, nuclear accidents, and therapeutic radiation treatment, sunburns - UV radiation
- type, dose, length of exposure- all guide treatment!
types of burn depths
-superficial= epidermal
-superficial partial thickness= epidermis and superficial dermis
-deep partial thickness= epidermis and deeper portions or bottom layer of dermis
-full thickness= destruction of epidermis, dermis, and portions of subq tissue
superficial burns
epidermal later
-mild erythema and hypersensitivity
-heal quickly: 24-72 hours
-do not usually require medical intervention, or cause scarring
superficial partial thickness burns
epidermis and the superficial or layers of dermis
-exposed nerve endings located within the dermal later= EXTREMELY PAINFUL
-wet, weeping blisters, pink in color
-heal in 1-2 weeks
-minimal to no scarring
deep partial thickness burns
epidermis and extends into the deeper portions or bottom laters of the dermis
-varying areas of pain and decreased sensation
-waxy appearance, no blisters due to extent of epidermal and dermal damage
-light pink or cherry red in color
full thickness burns
destruction of the epidermis, dermis, and portions of subcutaneous tissue
-all epidermal and dermal structures are destroyed- hair follicles, sweat glands, and nerve endings
-dry, leather feeling, eschar
-do NOT heal spontaneously
body surface area
TBSA= essential to guiding adequate fluid resuscitation and treatment!
- rule of palm=quick method used in prehospital setting: the size of the patient’s hand, including the fingers, accounts for approximately 1% TBSA
-rule of nines=MOST COMMON METHOD: adult body surface areas are broken down into 9% or multiples thereof. modified in infants and children.
-Lund and Browder classification: used for children. measurements take into account surface area related to age, are assigned to each body part.
factors that play an important role in determining the severity of a burn and directly affect overall patient outcome
-patient age: children and older adults- nutrition! look at albumin
-past medical history: co-morbidities like HF or diabetes. when fluid shifts, a problem is created with these co-morbidities which alters oxygenation and blood flow
-presence of inhalation or concomitant injury
-anatomical location of burn injury
respiratory/pulmonary effects of major burns injuries
-circumferential chest burns: impaired breathing- need escharotomy
-pulmonary edema, pulmonary damage, airway edema, airway obstruction
-inhalation injuries (above the glottis/vocal cords- inhaling chemicals or carbon monoxide)- emergent intubation may be required to maintain the airway
-swelling may occur within minutes to hours of the injury
-cues= facial burns, singed nasal and facial hairs, carbon in sputum, redness of oropharynx, inability to swallow, tachypnea
cardiovascular effects of major burn injuries
-electrical burns: dysrhythmias, cardiac arrest, asystole
-need continuous cardiac monitoring-recommended for at least 24 hours to 48 hours, need baseline EKG
-burn shock= GREATEST THREAT that results secondary to a massive fluid shift due tot he first 8-36 hours: a combination of distributive and hypovolemic shock. electrolytes, water, plasma, and proteins lead OUT of the intravascular space and INTO the interstitial space because of the increase in capillary permeability-leads to hypovolemia. large loss of fluid within the intravascular space increases blood viscosity leading to sluggish blood flow, decreased oxygenation, and overall decreased CO and tissue perfusion-worry about clots. symptoms of inadequate fluid resuscitation include hypotension, tachycardia, reduced UO, AMS, and potential MODS or death.
-you have 15 minutes to call a rev team, 6 hours before organ failure, and 9 hours before death
other systemic effects of major burn injuries
-fluid and electrolytes: shifts in potassium and sodium=hypokalemia, hyponatremia- shifted out of the blood!
-abdominal compartment syndrome
-renal: decreased renal perfusion-acute kidney injury due to increased myoglobin and hemoglobin released into blood from damaged muscles which can obstruct renal tubules.
-gastrointestinal: decreased nutrient absorption leads to need for supplemental nutrition, and decreased GI motility leads to paralytic ileus caused by hypovolemia (auscultate for peristalsis in all four abdominal quadrants)
-risk for infection-sepsis
-inability to regulate temperature (skin is what helps keep heat int he body, and now we have lost this mechanism)
-neuro: personality changes due to stress, electrolyte disturbances, hypoxemia, medications.
special considerations in the patient with burns
-inhalation injury can exist in the presence or absence of a cutaneous burn. injury increases mortality rate-develops pneumonia or hypoxemia, length ventilatory support. look at labs for inhalation injuries- pneumonia needs positive x-ray, WBC count.
-electrical injury: extend of tissue damage is. not always apparent on the surface of the skin!
-chemical injury: early recognition and immediate initiation of continuous irrigation-alkali burns tend to penetrate deeper, causing liquefaction necrosis of the underlying tissue requiring a lengthy irrigation period.
-escharotomy and fasciotomy: any circumferential burn to an extremity is at risk for developing compartment syndrome= EMERGENCY!
escharotomy vs. fasciotomy
-escharotomy: eschar results from no blood, meaning no oxygen. this procedure cuts through eschar into the subq fat.
-fasciotomy: needs to be done when swelling from third spacing is pressing on the vessels (shutting off blood supply), and must be relieved. healing done through wound vacs, which we medicate first with!
emergent phase management
primary goal= resolve immediate life-threatening issues resulting from the burn injury-baseline diagnostic evaluation, airway management, fluid resuscitation, pain management, prevention of hypothermia, initiation of wound care.
-4 categories: ABCs/airway, fluids, temperature control, pain control.
-diagnosis with brochoscopy, ECG, labs
-treatment: non-rebreather on 100% on ALL PATIENTS, intubation for facial burns with voice changes or soot in sputum, LR with 2 large bore IVs (20 g<) for burns of 20% TBSA or greater, prevent hypothermia by keeping covered, monitor temp, increase ambient room temp, pain meds with IV narcotics (morphine, fentanyl, hydromorphone), monitor for respiratory depression, avoid IMs, OTC pain control NOT PRN!!!!!!!!!
-remove charred clothing, cleanse wounds, topical agents or debridement prep may be needed, dressing changes, skin grafts if needed
-nutritional support: severe burns can double the metabolic rate, we need a nutritional, consult! enteraal feedings started within 24 hours. DAILY WEIGHTS AND IS AND OS!!!
-assess for immediate/life-threatening injuries: facial burns, hoarseness, soot in sputum, wheezing, tachypnea (COUNT FOR ONE FULL MINUTE) retractions, hypotension, confusion, HA, pain, decreased UO, hypothermia
-all burn patients get tetanus vaccine
-minor burns: cleanliness and infection control! cover with lean and dry sheet, cleanse gently with soap and water 2-3x daily, apply topical agent-silver sulfadiazine or mafenide to prevent infection
-incentive spirometer
intermediate/acute phase management
-usually 48 to 72 hours after the initial burn injury-immediately after resuscitation and stabilization have been achieved!
-wound healing and closure
-optimal nutrition for prevention of infection
-medications for pain and anxiety
-surgical management: debridement, wound closure and grafts
-assessments: WBC and watch for sepsis, DAILY WEIGHTS, caloric intake, protein and albumin, wound color and consistency, eschar, graft sites, s/sx of infection
-calorie counts, reassess pain, meds, would care daily or 2x/day (medicate for pain prior), assist with ADLs, keep room warm (80-100F), if hypothermic-reduce drafts by limiting traffic in and out of room, keep patient covered with sterile sheets
rehabilitative phase management
-treatment is extended care beyond discharge from the hospital.
-complications include contractures and scarring.
-assessments: infection, nutrition, contractures, scarring, disfigurement, limited mobility and ROM, flat affect, depression, fear and anxiety, tx compliance, readiness for integration into society
-actions: pressure garments to decrease severity of scarring and help the scar mature, splints and braces for reducing contracture potential, wound management, manage pain, active/passive ROM and stretching, psychosocial support, teaching, community resources, burn prevention, follow up plan.