I'm a physio and have had many clients with DVTs and PEs.
I understand Clexane injections are supposed to be for flights >4 hours for susceptible people....3 injections -> 24 hrs prior to departure, within 2 hours of departure, and 24 hours after departure.
However, my view is there's a lot of lifestyle factors you can do to reduce clot risk:
- lose weight
- don't overeat or eat fatty foods or drink moderate alcohol for several days prior.
- eat more fruit, salad, vegetables, and less animal products, oils, nuts for a week prior, during and after.
- stay moderately active for a month before flights and during the flight.
- don't exercise heavily for 3-5 days before the flight. this can damage the linings of arterioles.
- take aspirin if you are not taking clexane.
- wear compression stockings if legs are down for long periods.
- deep breathe, stretch and walk every 45 mins while awake on the plane and in airport lounges.
- drink a higher level of water. 300-400 mls an hour. plane air dehydrates you. keep your urine lighter than chardonnay. add a little salt and this will help keep your blood volume up rather then pee it out.
- consider a stopover if in transit > 10 hours.
The idea is to keep your blood moving and not allow it to move slowly through veins, which it does when you sit still for long periods with legs down.