wounds

wound

a break in the skin

abrasion

outer layers of skin rubbed away

incision

smooth cut resulting from a scalpel or sharp material

laceration

wound with irregular edges

puncture

wound made by a sharp, pointed instrument

inflammatory phase (day 3-4)

pain, swelling, and loss of function at wound site

proliferating phase (day 4-21)

fibrin threads extend across wound and pull edges together

maturation phase (day 21- 2 years)

wound closure tightens, scar formation

signs of inflammation

redness, swelling, warmth, pain

dehiscence

separation of wound edges

evisceration

separation of wound edges and protrusion of abdominal organs

erythema

superficial skin redness

burn cause

exposure to heat, chemicals, or radiation

first degree (superficial) burn

outer layer of skin tissue affected

second degree (partial thickness) burn

affects surface and underlying tissue

third degree (deep-thickness) burn

damages nerves and bones

fourth degree (deep full-thickness) burn

damages all layers of skin as well as muscle and bone with complete nerve damage

arterial bleeding

bright red blood coming out in spurts

venous bleeding

darker red blood coming out steadily