NSG 100: WOUND HEALING EXAM QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS
What are the types of wound heaaling
Primary, secondary, and tertiary intention healing
What is primary intention healing
Closed surgical incision where the tissue surfaces have been approximated/closed with
little or no loss to form minimal granulation tissue or scarring
What is secondary intention healing
Extensive wound with tissue loss and edges that cannot or should not be approximated,
but the wounds edges are kissing
How do secondary intention healing differ from primary intention healing
- Repair time longer
- Scarring is greater
- susceptibility to infection greater
What is tertiary intetnion healing
Delayed primary intention healing, wound is left open for 3-5 days and then closed
Why is tertiary intention healing used
Allows edema or infection to resolved and wound to drain
What are the phases of wound healing
inflammatory, proliferative, maturation
How long is the inflammatory phase
, 0 to 3-6 days
what is included in the inflammatory phase
- Hemostasis to stop the bleeding
- Phagocytosis to engulf microbes and cellular debris
What does hemostasis result from
- Vasoconstriction
- Retraction of injured blood vessels
- Deposition of fibrin
- formation of blood clots
- Formation of scab on the surface of wounds
What do macrophages secrete for phagocytosis
Angiogenesis factor to stimulate formation of epithelial buds at the end of injured blood
vessels
How long does the proliferative phase last
3-4 day to about day 21
What happens in the proliferative phase
- fibroblasts begin to synthesize collagen
- Capillaries grow across the wound and increasing blood supply
- Fibroblasts deposit fibrin in the wound
- Granulation tissue
- If wound does not close by epithelialization and scab forms
- If wounds are not covered by epithelial cells, they become covered with tissue that is
converted to dense scar tissue
WITH COMPLETE SOLUTIONS
What are the types of wound heaaling
Primary, secondary, and tertiary intention healing
What is primary intention healing
Closed surgical incision where the tissue surfaces have been approximated/closed with
little or no loss to form minimal granulation tissue or scarring
What is secondary intention healing
Extensive wound with tissue loss and edges that cannot or should not be approximated,
but the wounds edges are kissing
How do secondary intention healing differ from primary intention healing
- Repair time longer
- Scarring is greater
- susceptibility to infection greater
What is tertiary intetnion healing
Delayed primary intention healing, wound is left open for 3-5 days and then closed
Why is tertiary intention healing used
Allows edema or infection to resolved and wound to drain
What are the phases of wound healing
inflammatory, proliferative, maturation
How long is the inflammatory phase
, 0 to 3-6 days
what is included in the inflammatory phase
- Hemostasis to stop the bleeding
- Phagocytosis to engulf microbes and cellular debris
What does hemostasis result from
- Vasoconstriction
- Retraction of injured blood vessels
- Deposition of fibrin
- formation of blood clots
- Formation of scab on the surface of wounds
What do macrophages secrete for phagocytosis
Angiogenesis factor to stimulate formation of epithelial buds at the end of injured blood
vessels
How long does the proliferative phase last
3-4 day to about day 21
What happens in the proliferative phase
- fibroblasts begin to synthesize collagen
- Capillaries grow across the wound and increasing blood supply
- Fibroblasts deposit fibrin in the wound
- Granulation tissue
- If wound does not close by epithelialization and scab forms
- If wounds are not covered by epithelial cells, they become covered with tissue that is
converted to dense scar tissue
