Pulmonary embolism
A blocked artery in the lungs, usually caused by a clot that travelled there from a vein deeper in the body. Here is what it is, why surgery and long flights raise the risk, and the warning signs that need urgent care.
A clot that reaches the lungs.
A pulmonary embolism is a blockage in one of the arteries of the lungs, most often by a blood clot that formed elsewhere and travelled there.
A pulmonary embolism is a sudden blockage in one of the blood vessels that carry blood from the heart into the lungs. In most cases the cause is a blood clot that formed in a deep vein, usually in a leg, broke loose, and travelled through the bloodstream until it lodged in the lungs. The clot in the leg is called a deep vein thrombosis, and together the two are known as venous thromboembolism. A pulmonary embolism can be serious and is sometimes life threatening, so it is treated as a medical emergency.
The warning signs can come on quickly and are worth knowing. They include sudden breathlessness, chest pain that often feels worse when you breathe in, a fast heartbeat, feeling faint or dizzy, and sometimes coughing, including coughing up blood. A swollen, painful, warm or discoloured leg can be the earlier sign of the clot that started it. Anyone with these symptoms needs urgent medical assessment rather than waiting to see if they pass.
Several things raise the risk. Surgery is a notable one, particularly longer operations and procedures on the abdomen, pelvis, hips or knees, because the body becomes more prone to clotting and movement is reduced during recovery. Long periods of sitting still, including long haul flights, add to that by slowing blood flow in the legs. Other factors include previous clots, cancer, pregnancy and the period after birth, some hormonal medicines, older age, and being significantly overweight. Prevention focuses on keeping blood moving, staying hydrated, and, where a doctor advises it, measures such as compression stockings or blood thinning medication.
Surgery, then a long flight home.
Travelling for treatment can stack two risk factors back to back. An operation raises the chance of a clot forming, and then the journey home, often a long flight soon after surgery, adds the immobility that helps clots develop. This is why the timing of travel after a procedure matters, and why a careful clinic plans for it rather than leaving you to book the earliest seat home. The danger is that a clot can appear days after you have left the country, far from the team that treated you.
Before you commit, ask how the clinic assesses your clot risk, what prevention it uses during and after surgery, and how long it advises you to wait before flying. Ask what symptoms should send you to a hospital and where you would go once you are home. Tell your own doctor about the surgery and the travel so they can advise on prevention and recognise a problem early. If you take hormonal medication or have had a clot before, raise it directly. This is one of the clearest cases where rushing the trip home to save money can carry a real cost.
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