Pulmonary embolism
Pulmonary embolism is a blockage in one of the pulmonary arteries in your lungs. In most cases, pulmonary embolism is caused by blood clots that travel to the lungs from deep veins in the legs or, rarely, from veins in other parts of the body (deep vein thrombosis). Because the clots block blood flow to the lungs, pulmonary embolism can be life-threatening. However, prompt treatment greatly reduces the risk of death. Taking measures to prevent blood clots in your legs will help protect you against pulmonary embolism. 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're having a heart attack. The pain is often sharp and felt when you breathe in deeply, often stopping you from being able to take a deep breath. It can also be felt when you cough, bend or stoop. Cough. The cough may produce bloody or blood-streaked sputum. Other signs and symptoms that can occur with pulmonary embolism include: Rapid or irregular heartbeat Lightheadedness or dizziness Excessive sweating Fever Leg pain or swelling, or both, usually in the calf caused by a deep vein thrombosis Clammy or discolored skin (cyanosis). Pulmonary embolism can be life-threatening. Seek urgent medical attention if you experience unexplained shortness of breath, chest pain or a cough that produces bloody sputum.
