Venous Thromboembolism
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Venous thromboembolism covers deep-vein thrombosis and pulmonary embolism, blood clots that form in the veins and need prompt anticoagulant treatment to prevent serious harm.
Key facts
- Venous thromboembolism (VTE) covers deep-vein thrombosis (DVT), a clot in a deep vein usually in the leg, and pulmonary embolism (PE), where part of that clot breaks off and blocks a lung vessel.
- Risk rises with prolonged immobility (long flights, bed rest after surgery), recent surgery, and inherited clotting tendencies.
- DVT causes swelling, warmth, and aching pain in one leg; PE causes sudden breathlessness, chest pain, or coughing blood, and is a medical emergency.
- Treatment is anticoagulation, typically a direct oral anticoagulant such as apixaban or dabigatran, for a duration set by whether the clot had a clear trigger.
What VTE is
Venous thromboembolism is an umbrella term for two related conditions: deep-vein thrombosis (DVT), where a clot forms in a deep vein, usually in the leg, and pulmonary embolism (PE), where part of that clot breaks off and travels to block a blood vessel in the lungs. Prolonged immobility, such as long-haul travel or bed rest after surgery, recent major surgery, and inherited clotting tendencies all raise the risk.
Recognizing VTE
DVT typically causes swelling, warmth, and aching pain in one leg. PE is more urgent: sudden breathlessness, chest pain, or coughing up blood require emergency care immediately, do not wait. These are red-flag symptoms that warrant calling an ambulance or going straight to hospital.
How VTE is treated
Once diagnosed, treatment centers on anticoagulants to stop the clot growing and reduce the risk of a new one. Oral anticoagulants have largely replaced older options in routine care. Apixaban and dabigatran are direct-acting agents that work without the dietary restrictions associated with warfarin. Both sit within the broader heart and blood pressure treatment group. Treatment duration depends on whether the clot had a clear trigger, such as surgery, or arose without an obvious cause, with the latter often requiring longer-term anticoagulation.
When to seek help
Treat sudden breathlessness, chest pain, or coughing blood as an emergency and seek immediate care. For leg swelling or pain that suggests DVT, see a doctor promptly rather than waiting, since untreated clots can grow or travel to the lungs.
This page is educational and does not replace advice from a doctor or pharmacist who knows your health history.