A vascular surgeon has issued a warning to air travellers about the health risks associated with flying. Dr Rema Malik highlighted that many people are unaware of the physical strains and pressures air travel places on the body, particularly the risk of developing blood clots.
Dr Malik explained that air travel subject individuals to a “three-hit combo” that significantly increases the likelihood of deep vein thrombosis (DVT), a serious condition characterized by blood clots forming in the veins, usually in the legs. The NHS emphasizes that DVT can be dangerous, as it involves the formation of a semi-solid mass of blood cells and proteins that can obstruct blood flow.
When discussing the risks, Dr Malik stated, “While you are stressing about packing gifts and catching connections, your body is fighting a different battle inside that pressurized tube.” She expressed concern about the “turbulence” occurring within veins rather than the physical turbulence of the flight itself.
Understanding the Risks of Air Travel
Dr Malik identified three primary factors that contribute to the risk of DVT during flights. Firstly, prolonged sitting leads to stagnation. She referred to the calf muscles as the “Second Heart,” explaining that without movement, blood stops circulating effectively and begins to pool in the legs.
Secondly, the air quality in airplane cabins is notably dry, which can lead to dehydration. As the body loses moisture, blood becomes thicker, creating conditions conducive to clotting.
Lastly, reduced cabin pressure causes veins to dilate, which stretches the valves responsible for maintaining blood flow. According to Dr Malik, this combination of factors creates an environment that can promote the formation of blood clots.
Recognizing Symptoms and Taking Action
Symptoms of DVT include throbbing pain in one leg, swelling, warm skin around the affected area, and changes in skin coloration. Individuals may experience these symptoms in their arms or abdomen if clots form in those areas. Dr Malik strongly advises anyone suspecting they have DVT to seek immediate medical attention.
Fortunately, Dr Malik also offers practical recommendations to help mitigate these risks while flying. She underscored the importance of maintaining good circulation during flights by adopting her “In-Flight” Vascular Protocol.
Firstly, she recommends wearing compression socks (15-20 mmHg) to enhance blood flow and prevent swelling. These should be donned prior to departure.
Secondly, she suggests adhering to the “8-Ounce” Rule: drink at least 8 ounces of water for every hour spent in the air, while noting that beverages like coffee and wine can exacerbate dehydration.
Lastly, Dr Malik advises travellers to perform ankle pumps every 30 minutes. This simple exercise involves moving the feet as if pressing a gas pedal, which activates the calf muscles and helps clear stagnant blood.
By following these guidelines, travellers can significantly reduce their risk of developing DVT and safeguard their health while flying. Dr Malik’s insights serve as a crucial reminder of the importance of awareness and proactive measures in maintaining well-being during air travel.
