Leg compression sleeves (SCDs)
Inflatable sleeves that help prevent leg blood clots
What is it, and what does it do?
Sequential compression devices (SCDs) are inflatable sleeves placed around the legs. A small pump periodically inflates and deflates them to improve venous blood flow when a person is not moving around much.
Why might someone need it?
- A person is on bed rest or moving very little after surgery or serious illness.
- The care team wants to reduce the risk of deep vein thrombosis (DVT).
- Other blood clot prevention measures may not be suitable or may be used alongside them.
What might families notice?
- Soft wraps or sleeves on one or both calves.
- A compact pump with two air hoses.
- A gentle squeezing sensation or periodic inflation sounds.
What does it mean for my loved one?
Compression sleeves are widely used to help prevent blood clots; they do not by themselves mean a clot is present.
What to look for: common versions and parts
Calf-length or thigh-length sleeves may be used.
Some systems inflate one leg at a time; designs vary.
Descriptions are for recognition only. They do not identify or verify a particular patient's equipment.
For safety at the bedside
Do not remove or reposition sleeves without asking staff. Report pain, numbness or concern about skin pressure.
Questions you can ask the ICU team
- Is this part of routine clot prevention?
- Does my loved one need to wear them while resting in bed?
- Are any other clot-prevention treatments being used?
Written from patient-education references. Content and images clinically reviewed by an advanced practice nurse, October 2026. Educational content may be updated as guidance changes.
Cleveland Clinic: Intermittent pneumatic compressionCarePath provides general educational information and does not replace advice or decisions from your healthcare team. Legal & Educational Disclaimer
General education only. Equipment, medications, alarms and care plans differ from patient to patient. Never adjust or disconnect equipment. The treating team can explain the specific situation.