It is now recognised that long periods of inactivity, combined with the cramped conditions and dehydration which can occur on long flights, can cause a number of circulatory problems, ranging from swollen ankles and tired aching legs to more serious medical conditions such as deep vein thrombosis (DVT).
Factors which contribute to the discomfort and risk associated with flying include:
Cramped conditions that many passengers occupy during long-haul flights with restricted seating space
Limited exercise opportunity / lack of leg movement
A Deep Vein Thrombosis (DVT) can be caused when blood is not returning to the heart properly and gathers - or clots - in the lower limbs. Long periods of inactivity or sitting in cramped conditions (such as on an aircraft) can hamper the normal flow of blood as the process of returning blood to the heart from the legs is normally assisted by the movement of the leg muscles.
A DVT is not actually dangerous in itself, it's the complications arising from it that can be life-threatening. If the clot detaches itself from the veins and makes its way through the bloodstream to the lungs, you could suffer from chest pains which are exacerbated by breathing and, in some cases, the coughing up of blood. In rare instances, if the clot is large, it can travel to the heart and lungs, interrupt blood flow and result in sudden death.
Although the risk is low, as the consequences can be so serious, everything you can do to prevent flight-related DVT is extremely important. Generally, you should wear Flight Socks, take every opportunity to exercise and drink plenty of water. Here are some do's and dont's for healthy travel:
Do -
Wear Scholl Flight Socks or Scholl Flight Socks Sheer throughout the entire journey (in fact, put them on before you leave the house or hotel)
Exercise your legs (and walk around when you can) and regularly rotate and flex your shoulders, feet and ankles
Keep well hydrated
Wear loose and comfortable clothing
Consult a healthcare professional if you are at all concerned about your legs or circulation
Don't
Drink excessive amounts of alcohol, tea, coffee or any other drink containing caffeine
Sleep in an uncomfortable position
Use a footrest if it leaves your calves dangling
Allow your calves to make prolonged contact with your seat
Place luggage where it may restrict movement of legs and feet
Reference
World Health Organization International Travel and Health Chapter 2 – travel by air: health considerations 2005
Prior to leaving for the airport, try to boost your circulation by going for a brisk walk, a run or a swim Request an aisle seat or a seat with extra leg room
On a long-haul flight, try to break the journey with an overnight stay en route
Remain vigilant even when your flight is over
The risk of DVT doesn't end when the plane lands
Therefore, if any of the following symptoms develop, contact your doctor immediately and inform him or her that you were recently on a long haul flight
DVT Information
