As summer travel increases, RAK Hospital is advising passengers — especially those with pre-existing health conditions—to consult doctors before long flights.
This follows a recent case of pulmonary embolism (PE), a serious lung blood clot, diagnosed in a patient after an 8-hour flight from the UK.
Case highlights pulmonary embolism risk
The patient was admitted to RAK Hospital’s ICU after experiencing persistent right-sided chest pain for three days. A CT pulmonary angiography confirmed acute pulmonary embolism, and he was treated with anticoagulants. Fortunately, he stabilized and recovered, but the case underscores the risks linked to prolonged immobility on flights.

Dr. Suha Alsheikh Suleman
Dr. Suha Alsheikh Suleman, Specialist Pulmonologist at RAK Hospital, explained, “Pulmonary embolism often begins as a blood clot in the leg — a condition known as deep vein thrombosis (DVT) — which can travel to the lungs and block blood flow.
Long-haul flights, where passengers remain seated for extended periods with limited movement, significantly increase this risk — especially in individuals who are obese, pregnant, have heart or lung conditions, clotting disorders, or a prior history of thrombosis.”
Symptoms to watch for
Travelers should seek immediate medical attention if they experience symptoms after flying such as:
Chest pain or tightness
Shortness of breath
Coughing (sometimes with blood)
Rapid heartbeat or palpitations
Pain, redness or swelling in one leg
Lightheadedness or fainting
“These could be warning signs of pulmonary embolism (PE), a serious condition that can cause lung damage, heart strain, or sudden death if untreated. Recognizing symptoms early and acting quickly can be lifesaving.”
How to stay safe while flying
RAK Hospital advises high-risk travelers to follow these precautions before and during long flights:
Consult your physician before travel: Consult a physician for a “fit-to-fly” clearance especially if you have chronic respiratory, heart conditions, or a history of PE or DVT
Move frequently: Walk or stretch your legs every 1–2 hours during flights
Stay hydrated: Drink plenty of water and avoid alcohol, caffeine, and smoking
Wear compression stockings: Particularly for individuals with obesity, cancer, pregnancy, or history of clots
Avoid sudden temperature shifts: Travelers moving between extreme heat and cold (or vice versa) are at a higher risk of dehydration and increased blood viscosity, which can elevate the chances of developing DVT and pulmonary embolism. They are advised to stay well-hydrated and avoid prolonged sitting.
“We advise all patients with known risk factors to have a proper medical consultation before travel. A simple check-up can prevent serious in-flight or post-flight complications,” said Dr. Suha.
“In cases like this, the goal of treatment is to prevent the enlargement of the existing clot and to stop the formation of new clots.”
The patient has been discharged in stable condition and prescribed blood-thinning medication for three months.
RAK Hospital continues to emphasize preventive healthcare and encourages all travelers to prioritize their health during summer travel plans, particularly when flying long distances.