What is one purpose of Controlled Compression Therapy Units (CCT)?

• A. Increase blood flow
• B. Decrease edema and aid venous return
• C. Increase tissue temperature
• D. Increase capillary leakage

Answer: (B)

Controlled Compression Therapy Units apply carefully timed external pressure to a limb, creating a sequential squeeze that mimics the natural calf muscle pump. This action helps push venous blood back toward the heart and promotes lymphatic drainage from the tissues. As a result, interstitial fluid is pulled out of the swollen area, reducing edema and improving venous return. This mechanism supports healing and lowers risks associated with venous stasis after injury or surgery.

These devices aren’t intended to heat tissue or to increase capillary leakage. Their therapeutic effect centers on improving drainage and venous return to reduce swelling, making them the appropriate choice for edema management.