My sister in law was admitted Monday with a sodium level111 BP 190/100 they have done labs with show low na, K, and cl but not much else, CT/ MRI brain, chest, abd, pelvis, EKG,echo, and today eeg... Still no dx.. She is 60 yo. Had Rou-n-y surgery 11 years ago. chronic pain issues, She is edematous and looks 50lbs heavier than she did 3 weeks ago. She is disoriented and confused....they seem to be doing the right tests but nothing is coming up...any thoughts?