Deep vein thrombosis is a condition in which a blood clot forms in a vein. This clot can travel from the vein to your lungs and form a blood clot. This condition is called pulmonary embolism. Deep vein thrombosis is a potentially life-threatening condition and very common on long-haul flights. Let’s take a look at the connection between long flights and blood clots and then look at tips for deep vein thrombosis prevention during a flight.

1. The connection between long-haul flights and deep vein thrombosis
According to research, the inactivity of sitting in a small and cramped airline seat reduces blood circulation to a great extent. This can lead to the formation of blood clots. The dryness of the air in the pressurized airline cabin also increases the risk for deep vein thrombosis. The longer the flight, the more the risk of developing clots.

Certain risk factors that increase the possibility of developing deep vein thrombosis during long-haul flights are:

• Having varicose veins in the legs;
• Having suffered from a recent leg injury or a leg surgery;
• Being over 50 years of age;
• Being on birth control pills or hormonal medication; and
• Wearing tight clothing for long hours.

2. Symptoms of deep vein thrombosis
Signs to look out for during a long flight include:

• Cramping sensation that usually starts in the calf of the leg.
• Sudden onset of severe pain in the lower leg despite no obvious impact to the body.
• An onset of a swelling on one side of the lower leg.
• Change in color of a part of the skin to a red or blue shade.

If any of the above symptoms are accompanied by a feeling of dizziness, sweating, and chest pain, immediately alert your traveling companions or co-passenger. You need immediate help for deep vein thrombosis.

It is important to note that these symptoms may not always occur on the flight. They can even show up a few days later.

3. Tips on deep vein thrombosis prevention while flying
Prevention is always better than cure. If you are a frequent flier, here are some crucial deep vein thrombosis prevention tips that will truly prove to be lifesavers.

• Wear compression stockings as these help improve circulation especially in patients with varicose veins.
• Keep walking around during your long-haul flight when the seatbelt sign is switched off.
• If you have varicose veins or have had leg injuries recently, request for a seat near the exit as it has more legroom.
• Check with your doctor if you need a blood thinner prior to your long flight.
• Stay hydrated with water and juices during the flight and do not consume alcohol.
• Do not sit with your legs crossed.