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Deep Vein Thrombosis (DVT): Recognizing the Signs and Protecting Yourself

2026-03-26 5 min read
Medically Reviewed by Dr. Mehran Manouel, MD, FAAOS · March 26, 2026

Deep Vein Thrombosis is a serious medical condition in which a blood clot forms in one of the deep veins, most commonly in the legs. The CDC estimates that DVT and its most dangerous complication, pulmonary embolism (PE), affect up to 900,000 Americans each year, and as many as 100,000 die from the condition annually. Despite these numbers, many people in Forest Hills, Queens and across Long Island are unaware of the risk factors, warning signs, and preventive measures that could save their lives.

What Is DVT and Why Is It Dangerous?

The deep veins in your legs are responsible for carrying large volumes of blood back to your heart. When a clot forms in one of these veins, it partially or completely blocks blood flow, causing swelling and pain. The immediate danger of DVT lies in the potential for the clot to break loose and travel through the bloodstream to the lungs, where it can lodge in a pulmonary artery and cause a pulmonary embolism. A large PE can be fatal within minutes.

Even when DVT does not lead to PE, the clot can permanently damage the vein valves, leading to a chronic condition called post-thrombotic syndrome (PTS). PTS causes long-term swelling, pain, skin discoloration, and in severe cases, venous ulcers in the affected leg.

Recognizing the Warning Signs

DVT symptoms can be subtle, which is part of why the condition is so dangerous. Approximately half of all DVT cases produce no noticeable symptoms. When symptoms do appear, they typically affect one leg and may include:

  • Swelling in the calf, ankle, or entire leg that develops over hours to days
  • Pain or tenderness that often starts in the calf and feels like a cramp or deep ache
  • Warmth in the affected area compared to the other leg
  • Skin discoloration, usually redness or a bluish tint
  • Visible surface veins that were not previously prominent

If you experience sudden shortness of breath, chest pain that worsens with deep breathing, rapid heartbeat, or coughing up blood, seek emergency medical care immediately. These are signs of a pulmonary embolism.

Risk Factors You Should Know

Understanding your risk factors is the first step in prevention. DVT risk increases with:

  • Prolonged immobility: Long flights, car rides, bed rest after surgery, or sedentary desk jobs
  • Recent surgery or hospitalization: Especially orthopedic procedures on the hip or knee
  • Age: Risk increases after age 60, though DVT can occur at any age
  • Cancer and cancer treatment: Certain cancers and chemotherapy increase clotting risk
  • Pregnancy and postpartum period: Hormonal changes and pelvic vein compression elevate risk
  • Hormonal medications: Birth control pills and hormone replacement therapy raise clotting risk
  • Obesity: Excess weight increases pressure on pelvic and leg veins
  • Smoking: Damages blood vessel linings and affects clotting
  • Family history: Inherited clotting disorders such as Factor V Leiden significantly increase risk
  • Varicose veins: Damaged venous valves increase susceptibility to clot formation

Diagnosis and Treatment at M&S Vascular and Orthopedic Group

When DVT is suspected, prompt diagnosis is critical. Dr. Amir Salem, our Interventional Radiologist and Vascular Surgeon, uses duplex ultrasound as the primary diagnostic tool. This painless, non-invasive imaging technique visualizes blood flow in the deep veins and can identify clots with high accuracy.

Treatment depends on the location and severity of the clot:

Anticoagulation therapy (blood thinners) is the standard first-line treatment. These medications prevent the clot from growing and reduce the risk of PE while your body gradually dissolves the clot over time.

Catheter-directed thrombolysis may be recommended for large, acute clots that pose a high risk of post-thrombotic syndrome. In this minimally invasive procedure, Dr. Salem threads a catheter directly to the clot and delivers clot-dissolving medication precisely where it is needed.

IVC filter placement may be necessary for patients who cannot take blood thinners. A small filter is placed in the inferior vena cava to catch clots before they reach the lungs.

Compression therapy with medical-grade stockings helps manage swelling and supports venous return during and after treatment.

Prevention Strategies That Work

Many cases of DVT are preventable with simple lifestyle measures:

  • Stay active. Regular walking and calf exercises promote healthy blood flow. If you sit for long periods at work, stand and move for a few minutes every hour.
  • Move during travel. On flights or long drives, flex your ankles, walk the aisle when possible, and stay hydrated.
  • Follow post-surgical instructions. After any surgery, follow your doctor's recommendations for early mobilization and prescribed blood thinners.
  • Maintain a healthy weight. Reducing excess body weight decreases venous pressure and clotting risk.
  • Stop smoking. Smoking damages blood vessels and increases clot formation.
  • Discuss your risk with your doctor. If you have a family history of blood clots, are starting hormonal medication, or are planning surgery, talk to your physician about preventive measures.

Comprehensive Vascular Care Close to Home

At M&S Vascular and Orthopedic Group P.C., Dr. Salem provides expert DVT diagnosis, treatment, and long-term management. Our collaboration with Dr. Mehran Manouel is particularly valuable for patients who develop DVT after orthopedic surgery or who have overlapping musculoskeletal and vascular conditions. Our offices in Forest Hills, Queens and Great Neck, Long Island bring advanced vascular care to your neighborhood.

Do not ignore leg swelling or pain. Early detection and treatment of DVT can prevent life-threatening complications. Call (718) 897-2228 or visit https://www.msorthovasc.com to schedule a vascular evaluation.

Have Questions?

Our team at M&S Vascular and Orthopedic Group P.C. in Forest Hills, Queens is here to help.

Call (718) 897-2228