My mom is that age. She has always kept a list of medical conditions, current medications, and emergency contacts in her wallet. She use to make us kids carry one too. I use to think it was overkill but now see the benefit in this. She also keeps a go bag prepped (kind of like what you do when preggo) due to some other medical conditions. It has extra underwear, pajamas, toiletries, etc in it in case she’s unexpectedly admitted. With this it will be useful too. She’ll throw her phone and charge cable in there and take it with should she feels she needs to be seen/tested just in case she gets sent to the hospital. She’s also looking into writing some advanced directives and including a copy on her wallet or bag.