What is the primary function of a Sequential Compression Unit?

The primary function of a Sequential Compression Unit (SCU) is to enhance circulation in patients. This medical device is designed to prevent venous thromboembolism (VTE) by applying controlled pressure to the limbs, typically the legs. The SCU uses inflatable sleeves that sequentially compress and release, promoting blood flow back to the heart. This action helps reduce the risk of blood clots, particularly in patients who are immobile or undergoing surgery.

In contrast to monitoring vital signs, administering medication, or preparing patients for surgery, the SCU's specific aim is to improve venous circulation. Other options do not align with the device's primary purpose of promoting circulation and preventing complications associated with poor blood flow. The role of enhancing circulation is vital in a clinical setting, particularly in those at high risk for developing circulatory problems.