Recently I had a pulmonary embolism. I am now on coumadin to thin my blood. Since I have gotten on blood thinner my blood pressure has become more consistent. It was going from 90/50 to 180/90. Now it is staying around 134/85. I am happy about this. But I would like to know what could be the reason for this. The Drs have found a little wrong with my heart but they are not too concerned.