Pulmonary embolism is the sudden blockage of a major blood vessel (artery) in the lung, usually by a blood clot. In most cases, the clots are small and aren't deadly, but they can damage the lung. But ...

The pulmonary artery carries deoxygenated blood away from the right ventricle to the lungs. The pulmonary vein returns oxygenated blood from the lungs to the heart. The heart works as a dual ...

A pulmonary embolism (PE) occurs when a blood clot (embolus) enters a pulmonary artery (blood vessel) in the lungs and blocks ...