Important considerations are adequate supplies of medication ( in hand luggage ), a health summary and medication list.
Travel is associated with increased risk of deep venous thrombosis. Exercises can be advised, & consider aspirin or low molecular weight heparin for DVT prophylaxis.
In assessing lung disease and cardiac disease exercise tolerance is a guide to the patient's fitness for air travel.
Prepare for the journey by being fit and well-rested beforehand
Take a health summary and medication list.
A Medic-Alert bracelet if appropriate.
Travel insurance is very important
People with chronic illnesses may need to pay a higher premium
Many insurers exclude all psychiatric problems.
If medical assistance is needed overseas, the International Association for Medical Assistance to Travellers publishes a directory of English speaking doctors, and advice: www.sentex.net/~iamat/