Thromboembolism

Thromboembolism describes the process where a blood clot (thrombus) forms inside a blood vessel and either grows large enough to block it or breaks away and lodges somewhere else. The two most common presentations are deep vein thrombosis (DVT), typically in the leg, and pulmonary embolism, where a clot reaches the lungs. Both are serious but treatable if caught early.

Medicine used to treat Thromboembolism

Why clots form and who is at risk

Clots develop when normal blood flow is disturbed, the vessel wall is damaged, or the blood itself clots too readily. Prolonged immobility is a common trigger, long-haul flights between cities like Singapore, Hong Kong, or Tokyo are a frequent culprit for travellers across the region. Surgery, hospitalisation, cancer, pregnancy, and certain inherited clotting disorders all raise the risk significantly.

Recognising a clot in time

DVT typically causes swelling, warmth, and aching in one leg. A pulmonary embolism can produce sudden breathlessness, chest pain, or coughing up blood. These symptoms need urgent medical attention. Call emergency services or go to the nearest hospital without delay if they appear.

Reducing clot risk with anticoagulation

The mainstay of treatment and prevention is anticoagulation, medicines that reduce the blood’s tendency to clot. Warfarin is a well-established oral anticoagulant used for both treating existing thromboembolism and long-term prevention in higher-risk patients. Dosing requires careful monitoring because the effective range is narrow and interactions with diet and other medicines are common. Anticoagulation options fall within heart and blood pressure management more broadly, reflecting how closely clot risk ties to overall cardiovascular health.