The surgeon ordered sequential compression devices (SCDs) to be applied postoperatively. The client asks why the SCDs are needed. Which is the best response by the nurse when teaching the client about...

The surgeon ordered sequential compression devices (SCDs) to be applied postoperatively. The client asks why the SCDs are needed. Which is the best response by the nurse when teaching the client about the purpose of SCDs?

1. They promote arterial circulation.

2. They promote venous return from the legs.

3. They decrease afterload.

 4. They decrease postoperative pain.