Deep vein thrombosis occurs when a blood clot – or thrombus – forms within a deep vein. The DVT can become dangerous if the clot blocks the blood vessel and stops the normal flow of blood. If the clot detaches, becoming an embolus, it can travel and further occlude a vessel in another area of the body such as the lungs. 

Know the Symptoms of DVT

• Swelling and mild tenderness of the calf - this is usually different from the mild ankle swelling that many people get during long haul flights 
• Pain in the calf that is noticeable and may worsen when standing or walking
• Discoloration or redness of the affected area which may be warm to the touch

Prevent DVT During Air Travel

When traveling for long durations, passengers should follow these important steps:

• Wear loose-fitting clothes
• Get up and move around the aircraft cabin every 2-3 hours
• Exercise their feet and legs, by rotating the ankles, flexing the feet, and raising the legs while seated, every hour
• Keep well-hydrated by drinking plenty of water or juices. Limit beverages that increase dehydration, such as coffee, soft drinks and alcohol
• Avoid using hypnotic medications that can induce sleeping for long periods of time
• Keep in mind that crossing the legs compresses the veins in the back of the legs, increasing susceptibility for developing a blood clot
• For those susceptible to blood clots, do not massage the legs, as this may dislodge a clot and cause further complications

Physicians and nurses working at MedAire’s 24/7 MedLink Global Response Center have managed more than 500 DVT-related calls since 2004. The medical staff knows first-hand that a crewmember’s understanding of DVT, the signs, symptoms and preventative measures, can significantly reduce a passenger’s risk for death-related DVT.

For more information on how MedAire can help train your crew on the recognition and treatment of DVT contact your Account Manager at +1.800.333.3700.