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Key Concepts:

Terms in this set (262)

Superficial (first degree):
-epidermal layer only
-latent period followed by erythema
-minimal tissue damage, no blistering
-main sx: pain
-burn heals in 5-10 days without scarring
-ex: mild sunburn

Partial thickness (second degree):
-epidermis and varying degrees of dermal layer
-painful, moist, red, blistered
-wound extremely sensitive to temp changes, exposure to air, and light touch
a. Superficial partial thickness burns: dermal elements are intact and wound should heal in 14-21 days with variable amounts of scarring
b. Deep thermal burns: resemble full thickness injuries except that sweat glands and hair follicles remain intact; may appear mottled, with pink, red, or waxy white areas exhibiting blisters and edema formation; systemic effects are similar to those encountered with full thickness burns; many heal spontaneously, sometimes healing time may extend beyond 21 days; often heal with extensive scarring

Full thickness (third degree):
-entire epidermis and dermis and extends into subcutaneous tissue
-nerve endings, sweat glands, and hair follicles are destroyed
-varies in color from red to tan, waxy white, brown, or black
-dry, leathery appearance
-lack sensation in area of injury because of destruction of nerve endings (most have superficial and partial thickness burned areas at the periphery of the burn where nerve endings are intact and exposed- as the peripheral fibers regenerate, painful sensations return)
-not capable of re-epithelialization and require surgical excision and grafting to close the wound

Full thickness (fourth degree):
-burns that involve the underlying structures (muscle, fascia, bone)
-appears dull, dry, and ligaments, tendons, and bone may be exposed