What is a pulmonary embolism
Pulmonary embolism is a blockage occurring within one of the pulmonary arteries of the lungs. In most cases, pulmonary embolism is caused by blood clots that travel to the lungs from the legs or, rarely, other parts of the body (deep vein thrombosis).
Because clots block the blood flow to the lungs, pulmonary embolism can be life-threatening; and prompt treatment is therefore essential.Taking measures to prevent blood clots in your legs will help to protect against pulmonary embolism.
Signs and symptoms
Pulmonary embolism symptoms can vary greatly, depending on how much of your lung is involved, the size of the clots, and whether you have underlying lung or heart disease.
Common signs and symptoms include:
- Shortness of breath. This symptom typically appears suddenly and always gets worse with exertion
- Chest pain. You may feel like you are having a heart attack. The pain may become worse when you breathe deeply (pleurisy), cough, eat, bend or stoop. It will get worse with exertion but will not go away when you rest
- Cough. The cough may produce bloody or blood-streaked sputum
How pulmonary embolism may be linked to scleroderma