In reading a patient history, I noted that he had a history of BKA. The exam went on to say right pedal pulse 2+, left pedal pulse 1+. I wondered how he had bilateral pedal pulses when he'd had an amputation. Going further into the notes, along about the time the doctor was discussing the glucose level of 500, it became clear that it should have said DKA, not BKA. Slight difference there...