No . a pulmonary embolism may occur as a result of a dvt if a piece of a large thrombus breaks off it is then known as an embolus . and is carried by the blood flow back to the heart ; it is then passed through the heart into the blood vessels of the lung 肺栓塞pe是由dvt深静脉血栓症引起的，这是因为一大块血栓分裂被称为栓塞物，并随着血液流回心脏而发生然后这一大块血栓再经由心脏流回肺部的血管里。
