A blocked artery can cause a pulmonary embolism, a blood clot which blocks blood flow not to the heart but to the lungs. The blood clot travels through the vessels, usually from the leg, and becomes lodged in an artery that supplies blood to the lungs. Symptoms of pulmonary embolism are similar to those of a heart attack. An individual may experience shortness of breath, rapid heart rate, and chest pain. He or she may cough up blood. Pulmonary embolisms can be life-threatening if not treated promptly. Anyone at risk of blood clots should speak to a doctor about preventative measures.

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