What is a "pulmonary embolism"?

What is a "pulmonary embolism"?

Pulmonary embolism is a potentially life-threatening lung disorder that must be taken very seriously. Pulmonary embolism starts with a clot which is usually formed in veins in the lower extremities, like from the umbilicus down into the legs, and that clot will break off and move up the intravena cava through the right side of the heart and go out into the pulmonary artery and either flow into the right lung or left lung and then the effect of the blood vessels getting smaller and smaller will finally entrap that clot and everything beyond that can potentially die, a serious probem. The pulmonary embolism patient will suddenly feel they can't breathe and will feel a sudden pain, this has to be taken care of promptly. A clot to the lung is something very serious to be very concerned about.