nonfatal complications included hemorrhagic sequela due to anticoagulation , with an annual rate of 1 percent ( 1.4 percent per 100 patient years ) , thromboembolism with an annual rate of 0.8 percent ( 0.87 percent per 100 patient years ) , sternal infection 1 percent , operative cardiovascular accident 1 percent , and pericardial tamponade 1 percent .
C0040038
thromboembolism
C0007226
cardiovascular