I have a patient who had surgery. We got a call to go out to her home and check her PT/INR twice a week for several weeks until her coumadin was adjusted. A few minutes later I get a call that her DC was cancelled and she was going back to surgery for an amputation! Her history was that she had a PE last year and has been on coumadin since. Her doc told her to quit taking her coumadin a week before her surgery. Her PT/INR was not checked before or after surgery. On the third day post op when she was supposed to go home her right foot started hurting and getting dark. She ended up with a below the knee amputation of her right leg. I understand stopping the coumadin before the surgery but not checking her blood (I thought clotting time PT and PTT were mandatory before OR?) and not restarting the coumadin after surgery? Any thoughts?