What is the purpose of sequential compression devices (SCDs)?

• A. To manage pain
• B. To prevent venous thromboembolism
• C. To increase blood pressure
• D. To promote mobility

Answer: (B)

The purpose of sequential compression devices (SCDs) is primarily to prevent venous thromboembolism (VTE). These devices work by applying intermittent pressure to the legs, thereby promoting venous return and enhancing blood flow. This action helps prevent blood from pooling in the veins, which can lead to the formation of blood clots—specifically deep vein thrombosis (DVT). By maintaining circulation in the lower extremities, SCDs reduce the risk of these potentially serious complications, especially in patients who are immobile due to surgery, illness, or extended bed rest.

While pain management, blood pressure increase, and mobility promotion are important aspects of patient care, they are not the primary purpose of SCDs. Pain management typically involves medications or other techniques, while increasing blood pressure is not a goal of SCD use; instead, the devices are designed to facilitate circulation to prevent clot formation, addressing venous stasis directly. Mobility promotion relates to patient rehabilitation and can be encouraged as part of overall care, but SCDs specifically target the prevention of VTE rather than directly aiding in mobilizing the patient.