Certified Wound Ostomy Nurse (CWON) Practice Test

Which type of support surface is indicated for patients with fluctuating weight?

1. Active therapy surfaces

2. Passive therapy surfaces

3. Static foam surfaces

4. Reactive therapy surfaces

The correct answer is: Active therapy surfaces

Active therapy surfaces are specifically designed to accommodate patients with fluctuating weight due to their ability to adjust and respond to changes in pressure and body positioning. These surfaces often feature technology that automatically redistributes pressure in response to the patient's movements, providing enhanced support and protection against pressure ulcer development. For patients whose weight may change frequently—for instance, those with conditions that lead to weight loss or gain or those undergoing treatment for illnesses—having a surface that can adapt in real time is crucial. This adaptability helps maintain optimal skin integrity and minimizes the risk of pressure injuries. In contrast, passive and static foam surfaces do not offer the same level of adjustment. Passive therapy surfaces often rely on gravity and do not actively respond to changes in weight or position, while static foam surfaces are typically fixed in their support capabilities and may not effectively manage varying pressure needs as a patient's weight changes. Reactive therapy surfaces can adjust to some extent but may not provide the same level of active engagement as active therapy surfaces, making them less suitable for those with fluctuating weights.