Assistive Technology Professional (ATP) Practice Test

Poor circulation is a significant factor that can lead to reduced blood flow, which is crucial for maintaining healthy skin and preventing pressure sores. When blood flow is compromised, the tissues do not receive adequate oxygen and nutrients, making them more susceptible to damage. This lack of circulation can occur due to various reasons, such as prolonged immobility, underlying medical conditions, or compression from body weight against a surface.

In contrast, increased activity tends to promote better circulation by stimulating blood flow through muscle contractions and movement. Surface friction can contribute to skin irritation but does not directly reduce blood flow in the same way poor circulation does. Good posture is beneficial for even weight distribution and can help minimize pressure on specific points of the body, thereby supporting better circulation. Thus, the option highlighting poor circulation accurately reflects a critical risk factor for developing pressure sores.