Deep vein thrombosis
A possible risk associated with air travel, especially on long haul overseas flights, is deep vein thrombosis (DVT), also known as 'economy class syndrome'.
What is deep vein thrombosis?
A DVT is a blood clot in a vein deep in the body such as deep inside the muscles of the lower leg or in the pelvis. The main threat these clots pose is that if they dislodge and travel up a large vein to the heart they can then be pumped into a smaller blood vessel in the lung, causing a blockage leading to severe and possibly fatal complications.
A DVT is more common in certain people, particularly those with cancer, some people with clotting disorders or a history of previous DVT. Aggravating factors include forced immobility, for example, bed rest or sitting in a constrained position for a long time and, possibly, dehydration.
To help prevent DVT while flying:
- move your feet up and down, rotate your ankles, point your toes and generally keep your legs moving while sitting;
- take a walk up and down the aisle at least every two hours; and
- avoid dehydration (drink lots of water while flying and avoid alcohol).
Those at particular risk of DVT should seek specialist advice. Any treatment should be closely monitored by your GP.
