there is direct evidence that antocoagulant therapy prevents death and recurrent embolism in patients who have developed pulmonary embolism , and considerable indirect evidence that it prevents pulmonary embolism , and considerable indirect evidence that it prevents pulmonary embolism ( and death from pulmonary embolism ) in patients who have venous thrombosis .
C0013922
embolism
C0034065
pulmonary embolism