UPDATE: Mom died on August 9th, just 3 weeks after this visit. Not only did they needlessly waste what precious time she had left, they completely failed to do a pet scan to see how much further her cancer had progressed, hence the symptoms she was experiencing that required IMMEDIATE ATTENTION.
With regards to Mayo's response to this review of 'we'll try better next time' - There will be no NEXT time. She died. All Mayo clinic did was squander 9 hours of what little time she had left, filled with seemingly endless anxiety waiting for someone to properly examine her. That never happened. They simply gave her a blood test and told her that her potassium was low. All the while, sacks around her heart were filling with fluid, compressing her heart more and more each day...
Might as well have gone to Africa and had a medicine man wave chicken bones over his head while chanting for all the good Mayo did.