Move Around on Long Flights
Although rare, deep vein thrombosis (DVT) can occur during long airline flights, say medical researchers at the University of Washington. DVT is the development of blood clots in deep veins. Portions of these clots can break loose and travel to the lungs, causing acute breathing difficulty and cardiac arrest. To help prevent the problem: Drink plenty of water while in the air; don't drink alcohol. Get up and walk around the plane several times, at least once each hour. Stretch your legs and rotate your feet while seated; avoid crossing your legs. If you are an older adult, talk to your doctor about whether you should take an aspirin a few hours before the flight.