Wounds & Burns Flashcards
Scab
Dried surface of a clot over a wound
Endothelial cells
Simple squamous cells that line blood vessels
Granulation tissue
Delicate connective tissue made of fibroblasts, collagen, and capillaries
Scar
Dense irregular collagenous tissue formed from granulation tissue
Keloid
Raised scar tissue
Skin grafting
Surgical procedure that involves transplantation of skin
Skin graft
The transplanted tissue from skin grafting
Regeneration
New cells are the same type and have the same function as destroyed cells
Replacement
New type of tissue is developed, which produces a scar and can impare some functions
Labile cells
Cells that continue to divide throughout life
Stable cells
Cells that do not divide after growth ceases, but retain the ability to divide and are capable of regeneration in response to injury
Permanent cells
Cells that are not able to replicate and will be replaced by a different type of cell upon their death
Primary union
A process of wound healing when the edges of a wound are close together
Secondary union
A process of wound healing when the edges of a wound are not close together or if tissue loss is extensive
Fibrin
A thread-like protein found in clots that binds the edges of the wound together
Wound contracture
When a wound heals poorly resulting in disfiguring and debilitating scars
Describe the 9 steps of deep wound healing.
Bleeding Mast cells trigger inflammation Blood clot forms Scab protects the area Basale cells surround the wound Macrophages clean the wound Fibroblasts/endothelial cells produce granulation tissue Fibroblasts produce collagen fibers (scar tissue) Scab dissolves
Describe a first degree burn.
A burn through the partial thickness of the epidermis
Describe a second degree burn.
A burn through the partial thickness of the dermis
Describe a third degree burn.
A burn through the full thickness of the hypodermis
What is the rule of nines?
Dividing the body into percent values of burn coverage.
Applies to all degrees of burns, but only in adults
What is the percent value of burn coverage of the face and neck?
Anterior: 4.5%
Posterior: 4.5%
Total: 9%
What is the percent value of burn coverage of the upper limbs?
Anterior: 4.5%
Posterior: 4.5%
Total per arm: 9%
Total for both arms: 18%
What is the percent value of burn coverage of the trunk?
Anterior: 18%
Posterior: 18%
Total: 36%
What is the percent value of burn coverage of the lower limbs?
Anterior: 9%
Posterior: 9%
Total per leg: 18%
Total for both legs: 36%
What is the percent value of burn coverage of the perineum?
1%
It becomes life-threatening when what percentage of the body suffers a second degree burn?
Over 25% of the body
It becomes life-threatening when what percentage of the body suffers a third degree burn?
Over 10% of the body
