Pressure ulcers form primarily as a result of: 1. Nitrogen buildup in

Pressure ulcers form primarily as a result of:

1. Nitrogen buildup in the underlying tissues
2. Prolonged illness or disease
3. Tissue ischemia
4. Poor nutrition

ANSWER

ANS: 3
Pressure is the major cause of pressure ulcer formation. Prolonged, intense pressure affects cellu-lar metabolism by decreasing or obliterating blood flow, resulting in tissue ischemia and ulti-mately tissue death. Prolonged illness or disease and poor nutrition may place a client at risk for pressure ulcer development.