Burns etilology,classification, emergency management

Sylvia, a 24 old woman, was brought to the emergency department with thermal burns.     
(a)  whar are the possible etiologies of thermal burns?                     
(b) classify the burn injury depth                    
(c) Describe the emergency management of thermal burns.


Aetiology
Careless cooking
Dry heat - clothes catching fire, assault by another person, self immmolation with an aim of suicid, sun burn
Wet heat - Scalds - spilling hot water or oil

Classification of burn injury

Emergency Management of Thermal Burns
ABC
Airway & Breathing : Breathing assessed, a patent airway established immediately, airway esbablished and humidified 100% O2 given by mask or nasal cannula or endotracheal tube and initiate manual ventilation - encourage coughing/suctioning/bronchial suctioning. if needed use ventilator, monitor arteerial blood gas values, pulse oximetry readings, carboxyyhemoglobin levels, look for hypoxia

Circulatory system assessed : apical pulse and blood pressure monitored freuently- remove blood pressure cuff after each reading - pulse rate less than 110/minute aimed at.
Insert a large bore IV line Prevent shock by IV fluids(Ringer's solution, normal saline, colloids, whole blood, plasma and  plasma expanders used.

Serum electrolytes to be measured. Monitor vital signs. Look for dehydration or overload of fluids.

Consensus formula :
2 to 4 mL/kg/% TBSA  (Total Burnt Surface Area)
for a 70 kg man with 50% burns
2 × 70 × 50 = 7,000 mL/24 hours
Plan to administer: First 8 hours = 3,500 mL, or 437 mL/
hour; next 16 hours = 3,500 mL, or 219 mL/hour

Guard against compartmental syndrome : Doppler study the circulation in the limbs. Exchorotomy when needd.

Monitor urinary ouput; watch out for acute renal failure - BUN, serum creatinine, look for hemoglobin or myoglobin - 30-50 ml/hour ideal

Head to toe survey to identify potentially life threatening injuries - cervical spinal injuries, head injuries - treatment initiated

Respiratory System
Look for erythema or blistering  oflips  or buccdal  mucosa, singed nostrils, burns of face, neck or chest, increasing hoarseness, soot in sputum or tracheal tissue in respiratory secretions - chest X-Ray

Wound management
Wound assessment according to rule of nines

Attending to the wound
Frequent short moments of wrapping the wounds with ordinary cool water-soaked towels (not cold or ice cool water)
Remove clothes except the very adherent
Cover the wound with sterile dressings to prevent infection.

Prevention of infection
Take all aseptic precautions from the very beginning
Common bacteria infecting the burn wound : Staphylococcs, Proteus, Pseudomonas, Excherichia coli, and Klebsiella
Fungi and Candida albicans also grow easily in burn wounds
Topical antibacterial therapy started - Silver sulfadiazine, silver nitrate 0.5 % aqueous solution
Pain relief - opioid analgesics, antianxiety medication if needed

Prevention or treatment of complications including carbon monoxide poisoning and infection

Nutritional support; assess the bowel sounds, look for paralytic ileus and abdominal distention; look for occult blood in stools curling's ulcer and upper GI bleeding Pantaprazole needed


H/O pre-existing diseases elicited
Assess for progressive edema as fluid shifts occur; elevate affected limbs


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