MY dad 80 had a TIA in the beginning of the month he was in the hospitial over night all test NEG Blood , MRI CT Eco of the heart . he seemed fine for about 7 days now he is confused, his facial expressions have changed and he does not even sound like him self he is having a contrast MRI and an EEG in the morning, I need to know wht else I might have to look for? the Drs seem good but very reserverd in any speculation, and I am concewrned that the tests we are doing are taking to long in sched, if there is somthing going on right now