I don’t want to appear to be difficult, but I can only say and recommend again that you need to form a trusting relationship with the team of doctors who care for your mother. This site was set up a number of years ago to be a Q&A site to answer generic questions about topics like ‘how dialysis works’, ‘what is meant by an eGFR’, ‘what are the things that might indicate that dialysis is nigh’ … indeed any issues about the function and practice of dialysis.
It is true that, where the issues raised in regard to a specific problem have had wider implications, I have (always with caution, and always with reference back to the treating team) discussed specific patient problems, but this is by exception and is not the rule.
I sympathise with you - I really do - and about the concerns you have with and for your mother, but to answer your questions about her would require a breadth of intimate understanding of her past history, drug history, clinical status, co-morbidities (other stuff that has gone wrong for her in the past or might impact her present status) … indeed, information I can never hope to know, no matter how much you think you have ‘filled me in’ with it.
Again … and please, as I have made comment in the past … try to form a relationship - not with some nebulous ‘me’ over the Internet - but with her treating team. Only they will know the answers to the questions you ask. Only they will know what her characteristic potassium patterns are - or what drugs she might be on that might either influence her potassium levels (and, on the face of it, 5.1 is not a level that I’d be worrying too much about) and/or her speed of post-intervention recovery - for which she might very well have had some sedation given … but, again, I cannot tell! Only they will know.
So … please, ask her team.
I am not your correct port of call.
The Internet is not where you should be looking for these kinds of answers.
Nor, I’m afraid, do I accept requests to ‘be friends’ - for I notice you have made one. I cannot, and do not, acquiesce to ‘friend’ requests from anyone … so, you are not alone in being ‘refused’ … others have made similar requests in the past. As a result, no slight intended, nor given.