Wound, Ostomy and Continence Nurses Society (WOCN) Practice Exam

What defines a constant low pressure support surface?

1. Depends on patient movement

2. Provides constant pressure redistribution

3. Allows for minimal support

4. Inflates and deflates frequently

The correct answer is: Provides constant pressure redistribution

A constant low pressure support surface is characterized by its ability to provide consistent pressure redistribution. This means that the surface is designed to evenly distribute a patient's weight across the surface area, minimizing pressure points that can lead to skin breakdown or pressure ulcers. By maintaining a low and stable pressure over the patient's body, such surfaces help enhance blood flow and promote skin integrity, making them vital in preventing complications associated with prolonged immobility. When considering the attributes of a constant low pressure support surface, the focus is on its ability to create an environment that mitigates pressure, rather than responding to patient movement or frequently changing conditions, which can undermine its effectiveness. The option that suggests it allows for minimal support does not align with the purpose of maintaining constant low pressure, as sufficient support is necessary for the patient's comfort and the prevention of injury. Lastly, surfaces that inflate and deflate frequently are typically associated with alternating pressure support surfaces, which operate differently from constant low pressure systems. Therefore, option B accurately captures the defining feature of a constant low pressure support surface.