The family of an 87-year-old female has called 911. she is confused and exhibiting improper and out of character behavior. they inform you that she is a diabetic, but takes pills and not insulin. they also state that he has been complaining of dizziness and has been drinking water nonstop as well as urinating. assessment reveals adequate breathing, skin that is cool, and a radial pulse that is rapid and weak. based on this history, you should be suspicious of and treat her for: