Skin and wound Flashcards
Skin is the bodies ___ organ
Largest
What are the functions of skin
Protective barrier against disease-causing organisms
Sensory organ for pain, temp, and touch
Can synthesize vitamin D
Contributes to self-esteem
Can absorb medications
Loss of water, electrolytes, & nitrogenous wastes in sweat
Epidermis-
Dermis-
Subcutaneous tissue-
Epidermis- top layer
Dermis- inner layer; contains collagen, __blood and lymph___ vessels, & nerves
Subcutaneous tissue- contains _____ & lymph vessels, nerves, & fat cells
Collagen- tough, fibrous protein
Collagen-
Collagen- tough, fibrous protein
types of wounds
Incision-
Incision- cutting sharp instrument wound
types of wounds
Contusion-
Contusion- blunt wound skin intact
types of wounds
Abrasion-
Abrasion- friction rubbing or scraping
types of wounds
Laceration-
Laceration- tearing of the skin not aligned cut
types of wounds
Puncture-
Puncture- enters the skin
types of wounds
Penetrating-
Penetrating- puncturing and loging in tissue possible scattering inside skin
types of wounds
Avulsion-
Avulsion- tearing from natural anatomical position damage to blood nerves and other structures
types of wounds
Irradiation-
Irradiation-ultraviolet or radiation exposure
types of wounds
Pressure ulcers-
Pressure ulcers- compromised circulation caseing preasure
types of wounds
Venous ulcers-
Venous ulcers- injury related to poor venus return due to underlying obstruction
types of wounds
Arterial ulcers-
Arterial ulcers- underlying ischemia from thrombosis
types of wounds
Diabetic ulcers-
Diabetic ulcers- caused by diebetic condition or
Wound Classification
Intentional & unintentional
Intentional-(planned therapy or treatment)
& unintentional-(unexpected trauma)
Wound Classification
Open & closed
Open-(skin surface is broken)
& closed(internal injury like hemmorigeing)
Wound Classification
Acute & chronic
Acute(low risk of infection healing proccess is normal)
& chronic(infection risk is high wound does not heal normally)
4 stages of wound healing?
Hemostats
Inflammation
proliferation
maturation
Hemostasis
blood vessels constrict clotting begins Exudate is released causing swelling and pain
Inflammation
Inflammatory phase- follows hemostasis & lasts 4-6 days. WBC mainly luekocytes move to the wound. Macrophages arrive about 24 hours after injury to ingest debris & release growth factors. The patient will have pain, heat, redness & swelling at the site. A mildly elevated temp,
proliferation
Proliferation phase- lasts for several days; filling of the wound with granulation tissue primarily thru the action of fibroblasts. Highly vascular, red, & bleeds easily. If healing by primary intention, epidermal cells seal the wound within 24-48 hours. Collagen synthesis and accumulation continue. Depending on the size of the wound can take several weeks to years. By the end of the second week the majority of WBC have left the wound area & the wound is lighter in color.
maturation
Maturation phase- Begins about 3 weeks after the injury. A scar forms- an avascular tissue that does not sweat, grow hair, or tan in sunlight. It is less elastic than uninjured tissue. Wounds that heal by secondary intention take longer to remodel.