What is the purpose of sequential compression devices?

A. Sequential compression devices (SCDs) are not designed to strengthen muscles or prevent muscle atrophy in the lower extremities. Muscle strength is maintained through active range of motion, weight-bearing, and resistance exercises. While SCDs provide mechanical movement, they do not provide the physiological load necessary to prevent the muscle wasting associated with immobility. B. While proper circulation is necessary for skin health, SCDs are not a primary intervention for preventing pressure injuries or skin breakdown. In fact, if not applied correctly or if the skin is not assessed regularly, the sleeves can trap moisture and cause skin maceration. Skin integrity is primarily managed through frequent repositioning and moisture control rather than pneumatic compression. C. Maintaining joint health requires physical movement through the full range of motion to ensure the distribution of synovial fluid and the preservation of ligamentous flexibility. SCDs only compress the soft tissues of the calves or thighs and do not facilitate joint rotation or extension. Physical therapy and active mobility are the correct interventions for preserving joint function in sedentary patients. D. The primary purpose of sequential compression devices is to keep the blood pumping through the legs to prevent venous stasis. By applying intermittent pneumatic pressure, the device mimics the natural "muscle pump" that occurs during walking, facilitating the return of venous blood to the heart. This action is a critical prophylactic measure used to reduce the risk of deep vein thrombosis (DVT).