LEWIS Chapter 12: Inflammation and Wound Healing Flashcards
This is another factor besides pressure that contribute to pressure ulcer formation. This is pressure exerted on the skin when it adheres to the bed and the skin layers slide in the direction of body movement [e.g., when pulling patient up in bed], friction (two surfaces rubbing against each other), and excessive moisture. What is this defined as?
Shearing Force
This occurs when wound edges separate to the extent that intestines protrude through wound. What is this defined as?
Evisceration
This is the separation and disruption of previously joined wound edges. Usually occurs when a primary healing site bursts open. What is this defined as?
Dehiscence
These are immature connective tissue cells that migrate into the healing site and secrete collagen. In time the collagen is organized and restructured to strengthen the healing site. At this stage it is termed fibrous or scar tissue. What is this defined as?
Fibroblasts
This is a localized injury to the skin and/or underlying tissue (usually over a bony prominence) as a result of pressure or pressure in combination with shear and/or friction. These generally fall under the category of healing by secondary intention. What is this defined as?
Pressure Ulcer
This may be caused by the following:
1. Infection causing an inflammatory process.
2. Granulation tissue not strong enough to withstand forces imposed on wound.
What is this defined as?
Dehiscence
Where are the first and second most common sites for pressure ulcers?
- Sacrum
2. Heels
This is the replacement of lost cells and tissues with cells of the same type. The ability of cells to maintain this function depends on the cell type. What is this defined as?
Regeneration
This is a sequential reaction to cell injury. It neutralizes and dilutes the inflammatory agent, removes necrotic materials, and establishes an environment suitable for healing and repair. What is this defined as?
The Inflammatory Response
This may be caused by the following:
1. Obesity placing individuals at high risk for this because adipose tissue has less blood supply and may slow healing.
2. Pocket of fluid (seroma, hematoma) developing between tissue layers and preventing the edges of the wound from coming together.
What is this defined as?
Dehiscence
This is healing as a result of lost cells being replaced by connective tissue. This is the more common type of healing and usually results in scar formation. What is this defined as?
Repair
Bands of scar tissue that form between or around organs. This may occur in the abdominal cavity or between the lungs and the pleura. When this occurs in the abdomen it may cause an intestinal obstruction. What is this defined as?
Adhesions
These are inappropriately large, raised red and hard scars. This occurs when an overabundance of collagen is produced during healing. What is this defined as?
Hypertrophic Scars
