My mother, age 83 in Sept with diagnosed dementia of the Alzheimer type, Her B/P shot up,HR slowed down, started having frequent falls, then fainting, finally while in the hospital, went into a 24 hour deep sleep which no one could arouse her from. Her CT, MRI and EEG all were negative for infarcts, or bleeds, EEG was abnormal (slow) but within range of an Alzheimers patient. Today, at the Alzheimers unit of an assisted living where Mom lives now, they could not wake her up. EMT's stated she was not responding to painful stimuli (sternal rub) and took her to the hospital. She 'woke up" there, but did not know my brother. Then she came around and seemed to know him, but was cloudy on issues (normal for her). This is the second episode of this type in a 30 day period. Has anyone had any simlar experiences with a loved one?