Thursday, February 11, 1999 Published at 11:14 GMT
Air travel linked to blood clots
Thousands of blood clots may be caused by air travel
A possible link between long distance air travel and people suffering blood clots in their legs is to be studied by scientists.
Mr John Scurr, a consultant vascular surgeon from London's Middlesex Hospital, is undertaking research into the possible link.
He will study issues such as leg room, cabin pressure and oxygen concentration.
He believes thousands of people a year in the UK are affected by long haul flights.
"A lot of passengers who get off aeroplanes will not have any signs for symptoms for a long time. The signs and symptoms develop many years later."
British Airways is also undertaking research in the area.
Val Clarke, 58, from Gateshead, is suing Northwest Airlines, an American carrier, after she developed a clot following a trip from Minneapolis to Amsterdam.
The airline is defending the law suit, saying there is no evidence it was the flight that caused her problems.
Mrs Clarke said: "I can't walk too far, I can't sit too long. It has just totally wrecked my life, I am devastated."
It also advises passengers to drink plenty of water and avoid excessive amounts of alcohol.
In a statement the Foundation also says: "If you have recently undergone surgery or have suffered from deep vein thrombosis, your doctor may suggest that support stockings are of benefit for long-haul flights.
"If you have painful and swollen calves after a flight, it would be advisable to see your doctor."
A spokesman for the Civil Aviation Authority said he was aware that long distance flights had been linked to blood clots.
"We keep an open mind on this, and will be very interested to see the results of the research," he said.