# Can pulmonary embolism be prevented during long-distance travel? Canonical page: https://clinicsjo.com/en/faq/pulmonary-embolism-prevention-long-travel Language: en Category: respiratory Publisher: ClinicsJo Published: 2026-09-13T17:52:52.972Z Content updated: 2026-09-13T17:52:52.972Z Translation (ar): https://clinicsjo.com/ar/faq/pulmonary-embolism-prevention-long-travel Yes, pulmonary embolism can be prevented during long-distance travel by taking specific measures aimed at preventing blood clot formation, especially deep vein thrombosis (DVT) in the legs, which can travel to the lungs and cause pulmonary embolism. These measures include regular movement, wearing loose clothing, and performing leg exercises during prolonged sitting [\[1\]](). ## Understanding the link between long-distance travel and pulmonary embolism Pulmonary embolism usually occurs when a blood clot, most often formed in the deep veins of the leg (deep vein thrombosis), travels to the lungs and blocks a pulmonary artery [\[1\]](). Sitting for extended periods, such as during long flights or road trips lasting more than 4 hours, can increase the risk of these clots forming due to slowed blood flow in the veins [\[2\]](). This slowing of circulation promotes blood pooling and clotting, which may lead to the formation of dangerous clots. ## Prevention strategies during travel To reduce the risk of pulmonary embolism during long-distance travel, it is recommended to follow these guidelines: - **Regular movement:** Try to stand up and walk every hour to two hours, whether on a plane, train, or during stops when driving [\[2\]](). - **Leg exercises while sitting:** If you cannot walk, move your legs regularly. Raise your heels while keeping your toes on the ground, then raise your toes while keeping your heels on the ground. Tighten and relax your leg muscles repeatedly [\[2\]](). - **Loose clothing:** Choose comfortable clothing while traveling [\[2\]](). - **Proper hydration:** Drinking adequate amounts of fluids helps keep blood flowing well [\[3\]](). - **Compression stockings:** A doctor may recommend wearing graduated compression stockings, especially for those at higher risk, as these stockings help improve blood flow in the legs [\[2\]](). ## When should you consult a doctor? If you have additional risk factors for blood clots, such as a previous history of clots, certain medical conditions like heart disease or cancer, or if you are taking specific medications like birth control pills, it is important to consult your doctor before long-distance travel [\[1\]](). Your doctor may recommend additional preventative measures, such as anticoagulants (blood thinners), to reduce risks based on your individual health condition [\[1\]](). ## Warning signs that require immediate medical attention Despite taking preventative measures, it is important to know the signs and symptoms of pulmonary embolism and deep vein thrombosis. If you experience any of the following symptoms during or after travel, seek immediate emergency medical help: - Sudden shortness of breath [\[1\]](). - Chest pain that worsens when coughing or taking a deep breath [\[1\]](). - Rapid or irregular heartbeat [\[2\]](). - Coughing, which may be accompanied by blood [\[1\]](). - Severe dizziness or fainting [\[1\]](). - Swelling, pain, redness, or warmth in the leg or arm [\[2\]](). You can learn more about the symptoms, diagnosis, and emergency treatment of pulmonary embolism by visiting [Pulmonary Embolism: Symptoms, Diagnosis, and Emergency Treatment (Arabic)](). ## Medical references - [Pulmonary Embolism]() - [About Venous Thromboembolism (Blood Clots)]() - [The basics of blood clots: What you need to know]() General health education; not a substitute for individualized clinical assessment. Citation URL: https://clinicsjo.com/en/faq/pulmonary-embolism-prevention-long-travel#answer