OHS 421 Lecture Notes - Lecture 1: Granulation Tissue, Pus, Debridement
31 Mar 2017
School
Department
Course
Professor
Document Summary
Chronic wounds (peripheral vascular venous ulcers, lower extremity arterial ulcers, neuropathic ulcers, and pressure ulcers) Partial thickness wound- shallow, loss of epidermis & partially dermis that heal by regeneration. Full-thickness- extend to dermis & heal by scar formation. Primary intention- edges approximated, risk of infxn low. Secondary intention- open until scar tissue forms, require moist env"t for healing. Tertiary intention surgical wound left open for 3-5 days to decrease edema & infection, then stapled. Hemorrhage: bleeding from wound site (normal during & immediately after), can occur internally or externally. Hypovolemic shock incr hr, decr bp, cool & clammy skin. Hematoma localized collection of blood under tissue blue, swollen, change in colour/sensation/warmth. Infection if purulent material drains from it s/s: fever, pain, incr wbc, inflamed edges, drainage odorous & purulent: yellow, green or brown in colour. Dehisence skin & tissue partial or total separation of wound layers risks: poor nutrition, infection, obesity.
