Given his age, and history
of blood
in stool and falls, it is reasonable to keep him on
warfarin (coumadin), especially due to the evidence in people over 75 on Pradaxa, and the difficulty of reversal with Xarelto given his falls history. However, all of this should be discussed with his physician, and final decision will depend on many factors which go beyond the scope of this forum, including his physical exam and current health status.