Travel related DVT is an added potential problem for ‘at risk’ travellers who are immobile for extended periods of time.

DVT occurs by clotting of the blood in any of the deep veins - usually in the calf. A DVT can occur some days or even weeks after a trip, if a clot does develop, you will usually know by an intense pain in the affected calf. If this does happen you should seek medical attention immediately, especially after a long journey. In some cases this can be fatal, if the clot breaks off and makes its way to the lungs where it can then affect the lung’s ability to take in oxygen.

Those travellers most at risk should try to exercise at least every hour on long journeys. You can do this by exercising your calf muscles by rotating your ankles.

Another option available to reduce the risk of DVT is to wear in-flight stockings and socks. Correctly fitted anti-thrombosis stockings can increase blood flow, thus lowering the risk of DVT in those at risk.

With many different brands on the market, it is important that any stocking is fitted properly. A stocking that is too tight and worn by a person with existing circulation problems can increase the risk of deep vein thrombosis. Never guess the size of stocking you require - always ask to be measured properly. A variety of sizes are available if a stocking is too tight around the knee it will prevent essential venous return causing the blood to pool around the knee.

If you are in a high-risk category seek advice from your doctor before travelling.

This information is to complement and not replace the relationship with your family doctor. Always discuss your travel health requirements with your regular doctor or practice nurse.