Pulmonary Embolism
A pulmonary embolism is a blood clot that blocks an artery in the lungs, usually travelling up from a leg vein. It is a medical emergency that needs urgent treatment.
Causes & risk factors
- A clot from a deep vein (often the leg) travelling to the lungs
- Long periods of immobility (long flights, bed rest, surgery)
- Recent surgery, injury or fracture
- Cancer or clotting disorders
- Pregnancy or some hormone medicines
Common symptoms
Tests & diagnosis
Treatment & management
- Blood-thinning (anticoagulant) medicines
- Urgent clot-busting treatment in severe cases
- Oxygen and monitoring in hospital
- Treating the underlying cause and reducing future risk
- Compression stockings and movement to prevent leg clots
When to see a doctor urgently
- Sudden breathlessness, chest pain or collapse — call your local emergency number now
- Coughing up blood with breathlessness — emergency
- A swollen, painful leg with breathing symptoms — urgent
- Symptoms after surgery or a long journey — seek help fast
Not a diagnosis. MedDroid gives general educational information about pulmonary embolism. It cannot examine you, diagnose or prescribe — always confirm with a qualified doctor.
Frequently asked questions
How serious is a pulmonary embolism?
It can be life-threatening and needs emergency treatment. With prompt blood thinners, most people recover well.
How can I lower my risk on long journeys?
Move your legs regularly, walk when possible, stay hydrated and, if you are high risk, ask your doctor about prevention.
Explore more
MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.