A vascular surgeon has issued a critical warning about the health risks associated with flying, particularly the danger of deep vein thrombosis (DVT). Dr Rema Malik emphasized that millions of travelers are unaware of the physiological stresses air travel places on the body. She described flying as a “three-hit combo” that significantly increases the risk of blood clots.
Deep vein thrombosis is a condition where a blood clot forms in a vein, most commonly in the leg. According to the NHS, DVT can be dangerous and may lead to severe complications if not addressed promptly. Dr Malik explained that while passengers focus on logistics such as packing and making connections, their bodies face a different challenge.
Understanding the Risks of Air Travel
“When the cabin door closes, you enter a three-hit combo environment perfectly designed to create a blood clot,” Dr Malik stated. She outlined the three contributing factors:
1. **Prolonged Sitting**: Extended periods of immobility can shut down the “second heart,” which refers to the calf muscles. Without movement, blood circulation slows, leading to pooling in the lower extremities.
2. **Dehydration**: The air inside airplane cabins is drier than that of the Sahara Desert, causing rapid dehydration. This thickens the blood, increasing the likelihood of clot formation.
3. **Cabin Pressure Changes**: Lower cabin pressure causes veins to dilate, stretching the valves and making them less effective at preventing blood from pooling in the legs.
Dr Malik highlighted that the consequences of ignoring these factors can be severe. Symptoms of DVT include throbbing pain in one leg, swelling, warm skin around the affected area, and changes in skin color. Immediate medical attention is crucial if any of these symptoms arise.
Protective Measures for Travelers
Fortunately, Dr Malik offers practical advice for mitigating the risks of DVT during flights. She insisted, “You wouldn’t drive a car without oil; don’t fly a body without circulation.” Her “In-Flight Vascular Protocol” includes three essential recommendations:
1. **Wear Compression Socks**: Dr Malik recommends wearing compression socks rated at 15-20 mmHg. These socks help to mechanically promote blood flow and prevent swelling. It is essential to wear them before departing.
2. **Hydration**: Adhering to the “8-Ounce Rule,” travelers should drink eight ounces of water for every hour spent in the air. It is important to note that beverages like coffee and wine do not count, as they can contribute to dehydration.
3. **Regular Movement**: Every 30 minutes, passengers should perform 30 ankle pumps, mimicking the action of pressing a gas pedal. This exercise activates the calf muscles and helps to clear stagnant blood.
By following these guidelines, travelers can significantly reduce their risk of developing DVT while flying. Dr Malik’s insights serve as a crucial reminder that awareness and proactive measures are vital for maintaining health during air travel.
