FINAL Burns Flashcards
How many burns injuries occur yearly in the US?
How many related deaths occur each year?
0.5 million
4000
What is skin function?
Protection, thermoregulation, neurosensory and cosmesis
Epidermis is?
Non-vascular
Rapid regeneration
Protects from sun
Dermis is?
Vascular
Fibrous connective tissue made up of collagen and elastin
Lymph spaces, sweat glands, hair follicles
Subcutaneous tissue is?
Fatty tissue, fibrous CT
What are burn wounds classification?
Superficial 1st degree Superficial partial-thickness (Superficial 2nd degree) Deep partial-thickness (Deep 2nd degree) Full-thickness (3rd degree) Subdermal (4th degree)
How does superficial burn 1st degree present as?
Epidermis only Pink/red Erythema due to vasodilation Painful Scarless (heals within 7 days)
How does superficial partial-thickness 2nd degree present as?
Epidermis, superficial dermis Pink/red Blistering Wet, weepy very painful soft, blanchable little scarring.
How does deep-partial thickness burn (deep 2nd degree) present as?
Most of dermis Red with overlaying eschar Insensate Potential for pressure Delayed healing Scarring
How does full thickness burn (3rd degree) present as ?
White, brown, black, tan or red Dry leathery Firm, non-blachable Insensate No potential for healing Significant scarring Grafting.
How does Subdermal (4th degree) burn present as?
Electrical burns, long duration burns Charring of invisible surface, exposed fat Wounds on tendons, muscles Loss of subdermal tissue and PN damage Surgical intervention Amputation
The extend of burns is classified by?
% of total body surface area (%TBSA)
True or False. Deep partial and full-thickness burns >30% TBSA require prolonged period to close and intensive rehab?
Tues
What is the rule of nine?
Divides body surface into areas consisting of 9% or multiple of 9.
Body surface vary depending on children and age.
What is Lund and Browder Chart and where is it used?
More accurate and used in burn centers and provided %TBSA to body segments adjusted to age.`
What are the phases of wound healing?
Inflammatory phase
Proliferation phase
maturation phase
How long does inflammatory phase last, and how is it characterized by?
3-10 days
the wound is painful, warm, red and edema develops
Characterized by vascular and cellular response
How long does the proliferation phase last, and how is it characterized by?
begins around day 3 and lasts until the wound heals
Revascularization/re-epithelialization
COntracture of the burn wound
The wound remains red, raised, a rigid scar may develop
The tensile strength of the new scar is poor.
How long does the maturation phase last, and how is it characterized by?
begins around 3rd weeks of healing lasting up to 2 years.
Fibroblast leave and collagen remodeling occurs
Redness fades, scar softens and flattens
The tensile strength of scar increases only reaching about 80% of its original strength.
What are hypertrophic scars?
thick, rigid, red scars (6-8 wks after wound closure)