Pulmonary embolus is a clot that travels to the lungs
DEAR DR. ROACH: A colleague of mine recently had a pulmonary embolus at age 45. She is otherwise healthy. What must she be concerned about? — N.R.
ANSWER: A pulmonary embolus is a blood clot that travels to the lung. Although they can originate in any large vein, they most commonly come from the deep veins of the pelvis and thighs. The clots can break off with or without physical activity, and they usually travel through the right side of the heart into the lungs.
The symptoms of PE include shortness of breath, chest discomfort, fast heart rate and cough. Some people experience a sense of impending doom; others have no symptoms at all.
Once the diagnosis is made (now mostly by CT scan, but nuclear and dye studies still are done sometimes), treatment is begun immediately with injection drugs to stabilize the clot and allow the body to dissolve it. (In very rare instances, drugs to dissolve the clot are given, with extreme caution.) After four or so days on injection drugs, the person can be switched to oral medications, such as warfarin (Coumadin) or one of the new oral anticoagulant drugs.