Two days ago my oldest came to visit. I keep the door unlocked during the day..everyone knock and comes in.he must have knocked and clled my name and i heard nothing.. i wok to him shaking me..i wonder if he thought i was dead..the other night a night nurse came in to deliver a package that came for me and i never heard her...im beginning to be concerned..ive never slept this soundly..a noise would wake me..