Inflammation Flashcards
5 signs of inflammation
- pain
- redness
- heat
- swelling
- loss of function
Abscess
localized area of inflammation w/ exudate (antibiotics don’t help, surg to remove)
Ulcer
inflammation in epitheial layer: skin or GI tissue
Keloid
abnormal healing due to excess collagen causing scar tissue in tumor-like mass
Granuloma
chronic inflam leads to lesions of macrophages (infection)
Dehiscence
partial/total seperation of wound due to stressors
Evisceration
Wound completely seperates, severe, (look for high fluid)
Fibrous tissue repair
-connective tissue: new cells and blood supply
Scar Tissue
low blood flow, scars no new functioning cells
Wound Healing Phases:
- Inflammatory: starts w/ injury: vasoconstrict, then vasodilate plateltes form clots and phagcytosis
- Proliferation Phase: day to weeks : granulation tissue forms, collagen, new capillares, wound contracts, new epithelal cells
- Maturation Phase: weeks to months: Collagen formed/removed to increase strength of wound
Acute Inflammation Vs Chronic
-acute: ST, rapid onset
-Chronic: LT, typically due to infections, scar tissue
3 outcomes of acute inflammation
- Resolves
- Progresses to cronic
- Necrosis/scaring/fluid
Vascular Stage of Acute Inflam
- high blood flow and vasodilation leads to vascular permability -> swelling, pain loss function (acts to dilute chemicals)
Cellular Stage of Acute Inflam
- Margination of WBCs
- endothelium
- Chemotxis (cells migrate to skin)
- Activation and phagocyotsis
Local Inflammation
redness, warmth, pain, swelling, heat, loss of function @ site of injury