My grandmother had a bypass surgery in 2014. And a month ago, she had all the checkups and found out she had low sodium level. After taking the medication suggested by the doctors. Sond medicines didn't suited her and has not recovered And now she's having symptoms like "heart jitter", "gas", "saas pholna"( but not exactly having difficulty in breathing), "headache", "pain in legs", "tiredness","lack of activity", "ringing in ear". She faces these symptoms almost everyday Please tell us what can we do now And please suggest what can we do for self treatment too