Acute pulmonary embolism is an acute blockage of the pulmonary artery caused by a blood clot traveling from the deep veins of the legs to the lungs, leading to pulmonary embolism which can be life-threatening. However, if diagnosed and treated promptly, the risk of death can be significantly reduced.

Acute pulmonary embolism occurs when an artery in the lungs is blocked by a blood clot. Symptoms of acute pulmonary embolism often occur suddenly and are dangerous. Therefore, patients need to be detected and treated promptly.