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bi240 healing
grcc bi240 healing
| Question | Answer |
|---|---|
| fibrosis | occur due to complications or chronic inflammation. |
| healing by first intention | wound cleaned, edges quickly approximated and sutured = less scaring |
| Healing by second intention | Wounds heal from inside out; there is a large break in tissue, jagged edges, more inflammation & longer healing time. |
| healing process has how many phases? | 4: inflammatory, migratory, proliferative & maturation |
| Inflammatory phase | blood clot forms and seals area where proliferation happens, fibroblasts form and phagocytosis. |
| Migratory phase | Epitheleal cells continue to migrate and proliferate, granulation tissue |
| in migratory phase granulation tissue forms | beneath the the scab. |
| Proud flesh | granulation tissue. |
| Proliferative phase | Epi increases in thickness, collagen fibers in regular patterns, fibroblasts supplied, debris/fibrin/leukocytes disappear |
| maturation phase (remodeling) | Scab sloughs off, epi normal, collagen more organized, fibroblasts disappear, vascular restored |
| When does scar fade? | When capillaries decrease; red to white |
| Complications of scar tissue | puckering of skin, keloid formation, adhesion |
| complications of a scar | it can pucker causing a distortion |
| complications of adhesion | can cause obstruction (i.e. bowel twisting) |
| co-morbility | delayed healing due to other health problems such as DM or cancer. |
| Complications of healing | loss of funcion |
| What is the worst complication of healing? | contractures/obstructions |
| Hypertrophic scar formation | keloid |
| Common contracture | scar tissue that forms where you can't bend or move extremity. |