Exam 5 Flashcards
(192 cards)
What causes skin alterations?
- Thin skin
- Obesity
- Disease of the skin (eczema)
- Jaundice
What are the types of wounds?
- Intentional or unintentional
- Open or closed
- Acute or chronic
With chronic wounds, there is an increased risk for _____.
Infection.
What is an example of a clean wound?
Mole removal
What is an example of a clean contaminated wound?
Appendectomy
What is an example of a contaminated wound?
Fell off a bike and scraped knee.
What is a dirty wound?
Traumatic wound with delayed repair, devitalized tissue, foreign bodies, or fecal contamination.
_____ ____ is the first line of defense against microorganisms.
Intact skin
What are the four principles of wound healing?
- Intact skin is the first line of defense against microorganisms.
- Hand hygiene!!
- Adequate blood supply
- State of health
What are the phases of wound healing?
Hemostasis, inflammation, proliferation, and maturation (remodeling).
When does hemostasis occur?
Immediately after injury.
Hemostasis increases perfusion causing ____ and ____.
Pain and swelling
What happens during the hemostasis phase of wound healing?
Blood clotting > same blood vessels dilate and capillary permeability increases > plasma and blood components leak out > exudate > swelling and pain.
How long does inflammation last?
2-3 days
What happens during the inflammation phase of wound healing?
Leukocytes and macrophages move to the wound.
How long does proliferation last?
Several weeks
What happens during the proliferation phase of wound healing?
Fibroblasts build new tissue, capillaries bring O2 and nutrients, and granulation tissue forms.
When does maturation (remodeling) start and how long does it last?
Begins 3 weeks after injury and can last month or years.
What happens during the maturation (remodeling) phase of wound healing?
Collagen is remodeled and forms a scar. (Scar tissue is never fully restored)
What is desiccation?
When a wound dries up.
What is maceration?
Wet skin
What kinds of nutrition do you need for wounds to heal?
Protein, carbs, fats, and vitamins.
Vitamins ___ and ___ are important for epithelialization and collagen synthesis.
A and C!!!
What phase in wound healing does zinc help?
Proliferation phase.