DVT Prevention and Compression Stockings: What You Should Know

Deep vein thrombosis (DVT) is a serious condition in which a blood clot forms in one of the deep veins — most often in the leg. It is a medical condition that requires appropriate medical attention, and anyone who suspects they have DVT should contact a healthcare provider promptly. This article provides general educational information about DVT risk factors, the role compression stockings play in risk management, and what Canadians should be aware of.

Note: This article is for informational purposes only. It does not constitute medical advice. If you have concerns about blood clots or DVT, speak with a qualified healthcare professional.

What Is DVT?

DVT occurs when a blood clot (thrombus) forms in a deep vein, typically in the calf, thigh, or pelvis. The clot can partially or fully block blood flow through the vein. The most serious complication of DVT is pulmonary embolism (PE) — if part of the clot breaks off and travels to the lungs, it can be life-threatening.

According to Heart and Stroke Foundation of Canada, venous thromboembolism (VTE) — which includes DVT and PE — affects thousands of Canadians annually.

Risk Factors for DVT

DVT risk is increased by a combination of factors. Common contributors include:

• Prolonged immobility (bed rest, long flights, post-surgical recovery)
• Recent surgery, particularly orthopaedic procedures like hip or knee replacement
• A personal or family history of blood clots
• Pregnancy and the postpartum period
• Use of hormonal contraceptives or hormone replacement therapy
• Obesity
• Cancer and certain treatments
• Age (risk increases with age)

The Role of Compression Stockings in DVT Risk Management

Graduated compression stockings are used as part of DVT prevention strategies in various clinical contexts — including hospital settings where patients are recovering from surgery or illness with reduced mobility. By applying external pressure that supports venous blood flow, compression stockings help prevent the venous stasis (sluggish blood flow) that contributes to clot formation.

In hospital settings, anti-embolism stockings (a specific type of medical compression) are commonly applied to immobile patients. For outpatients with elevated DVT risk factors — including travellers, pregnant individuals, and post-surgical patients managing recovery at home — a healthcare provider may recommend graduated compression stockings as part of a prevention protocol.

Browse DVT-related compression options at Factory Direct Medical, including therapeutic-level stockings from SIGVARIS and JOBST.

Compression Stockings for Long-Haul Travel and DVT Risk

Long-haul air travel (typically flights over 4 hours) is associated with an increased DVT risk, particularly for those with additional risk factors. The combination of prolonged immobility, cramped seating, and reduced ambient air pressure contributes to slowed venous circulation.

For travellers with elevated risk, compression stockings — typically in the 20-30 mmHg range — are frequently recommended by physicians and travel medicine specialists. Browse travel compression socks designed for this purpose.

After DVT Treatment: Long-Term Compression Use

Following a DVT diagnosis and treatment, some patients develop post-thrombotic syndrome (PTS) — a chronic condition involving ongoing leg pain, swelling, and skin changes resulting from vein damage. Medical-grade compression stockings (typically 30-40 mmHg) are commonly prescribed in this context to manage PTS symptoms over the long term. This is a decision made in consultation with a vascular specialist or physician.

Frequently Asked Questions