Burns Flashcards
What is the definition of a burn?
Coagulative destruction of the skin, sometimes including deeper tissues or organs.
What are the common causes of burns?
Dry heat, moist heat, electricity, chemical caustics, irradiation.
What is a scald?
A burn resulting from moist heat.
What is the estimated global incidence of burns annually?
11 million people.
What is the largest organ in the human body?
The skin.
What are the layers of the skin?
Epidermis and dermis.
Who conceptualized the zones of burn injury?
Jackson in 1947.
What are the three zones of burn injury?
Zone of coagulation, zone of stasis, zone of hyperemia.
What are the classifications of burn depth?
Superficial, partial-thickness, deep partial-thickness, full-thickness.
What is the most important factor for good burn outcomes?
Immediate resuscitation and early wound closure.
What is the primary objective of burn resuscitation?
To prevent burn shock and maintain perfusion.
What is the recommended pre-hospital burn care?
Stop the burn process, cool with water for 10 minutes, wrap with a clean cloth.
What is the primary survey approach for burn patients?
A: Airway, B: Breathing, C: Circulation, D: Disability, E: Exposure, F: Fluid resuscitation.
What is the most concerning complication of inhalation injury?
Airway edema leading to respiratory failure.
What are signs of inhalation injury?
Facial burns, carbonaceous sputum, hoarseness, singed nasal hairs.
What is the rule of nines used for?
Estimating total body surface area (TBSA) affected by burns.
What is the Parkland formula for fluid resuscitation?
4 x %BSA x weight (kg) = total fluid (ml) for first 24 hours.
How is fluid given in the first 24 hours of burn resuscitation?
Half in the first 8 hours, the remaining half in the next 16 hours.
What is the recommended fluid for initial burn resuscitation?
Ringer’s lactate.
What is burn shock?
Hypovolemic shock caused by fluid loss due to increased capillary permeability.
What are the two phases of burn pathophysiology?
Resuscitative phase and hypermetabolic phase.
Why is early enteral nutrition important in burn patients?
To reduce bacterial translocation and support metabolic demands.
What are common systemic responses to burns?
Hypermetabolism, immune suppression, renal dysfunction, cardiovascular changes.
What laboratory investigations are essential for burn patients?
CBC, electrolytes, renal function tests, blood gases, wound swabs for culture.