Her sodium level is just a little bit low. Could it cause her confusion?

Thanks. Great question. Never heard that low sodium could be a problem.
Great Answer too!!

Yes low sodium can cause confusion.

My father-in-law was hospitalized (this was years ago) for fainting and other issues. It turned out it was simply low potassium.

As Bablou so wisely said sodium is an electrolyte (as is potassium). Balance of electrolytes is key. Another thing about sodium - it's being found in some studies that older people (in general) shouldn't be on low sodium diets. These one size fits all (and all ages) conclusions can be far off the mark.

The main thing is to go back to the doctor with your mother and say that she is not doing well. There is confusion. Could this be from an imbalance of some kind? An infection? A medication? Blood test can tell a lot, but the tests need to be read by a skilled professional who knows the meaning of the full panel.

Keep at it before you let them brush her off as having confusion because of "aging" or even dementia. Everything needs to be checked before coming to such a conclusion.

We'd love an update on what happens,
Carol

Sodium is an electrolyte. When your electrolytes are out of balance, there is usually an underlying cause. Was she checked for a UTI? Was her kidney and heart dunction checked? Thyroid? A good eldercare doctor doesn't just look at the blood tests, they also look at how the patient is doing functionally.

I agree, go back to the doctor with her and make sure the doc knows she is NOT doing fine, which is almost certainly was mom is saying.

DEFINTITELY! My mother was so low on sodium she had to be kept in the hospital and at that time they said that that was why she was so confused. She was on sodium pills for 2 months to get the level up where they want it.

Look at ALL the bloodwork, not just one item. Then factor in all the meds and interactions. You really need to go with her to the MD, take notes and ask questions. Don't rely on her faulty memory to tell you what the problem is.