Which device is used to stimulate circulation in the legs by inflating and deflating compression hose continuously?

The sequential compression device (SCD) is designed specifically for stimulating circulation in the legs through a process of inflating and deflating compression sleeves or hose. This device works by applying intermittent pressure to the legs, which mimics the natural muscle contractions that occur during physical activity, promoting blood flow back to the heart. This is particularly beneficial for patients who are immobilized or at risk for deep vein thrombosis (DVT) since the mechanism helps prevent blood clots by enhancing venous return.

Other options do not provide the dynamic, cyclical compression necessary for effective stimulation of circulation in the same way. Compression stockings are static and do not change pressure; they provide continuous compression but lack the active inflation and deflation feature. A leg massager may assist with relaxation and muscle relief but is not specifically tailored for circulation enhancement through compression cycling. An electrotherapy unit uses electrical impulses for muscle stimulation and pain relief but does not provide the mechanical compression that promotes venous blood flow. Thus, the SCD stands out as the correct choice for its intended function regarding circulation enhancement in the legs.