Oregon Certified Nursing Assistant State Practice Exam

Which condition increases the risk of pressure injuries?

1. Flexibility

2. Cold air

3. Good circulation

4. Restricted mobility

The correct answer is: Restricted mobility

Restricted mobility significantly increases the risk of pressure injuries because individuals who are unable to change positions frequently are more likely to develop these injuries. Pressure injuries occur when sustained pressure decreases blood flow to certain areas of the skin, usually over bony prominences. When a person has restricted mobility, they cannot shift their weight or alter their position, leading to prolonged pressure on specific areas. In contrast, flexibility, cold air, and good circulation are not conditions that inherently contribute to the risk of pressure injuries. Flexibility allows for easier movement, which can help in repositioning and preventing pressure sores. Cold air has minimal direct impact on pressure injuries, as it is not the temperature itself that causes injury, but rather the absence of movement. Good circulation is vital for skin health and can help maintain blood flow, preventing the tissue damage that leads to pressure injuries. Overall, the inability to move plays a critical role in increasing the vulnerability to these types of skin injuries.