my father (91, heart failure stage 2, kidney failure stage 4) just got his recent blood work. I expected his GFR to decline further but it has dropped from (30 in 10/2019 -->29 in 01/2020 --> 24 in /05/2020). I feel so paralyzed by fear. In 2018 his GFR was at 44. The last couple of days he had issues with diarrhea and today is the first day he is feeling better again. I'm just at a loss. He has no symptoms like ankle swelling. We try to get him to drink more but it's not that easy. I'm all over the place at the moment. I don't even know what a GFR of 24 means, I know it's kindey stage 4 but what am I looking at in the future?
Thank you :)