A possible unnecessary death

Death
   A close friend found his business partner dead when he failed to show up to pick up Ken for work. People die; in this case I believe there are problems. Dave and Ken where mudding drywall when Dave lost control of his right arm. Dave decided to go to a chiropractor;  this is where I think the system went south... you would have thought a chiropractor would have caught on to the symptoms, but no, he just did his thing (boat payment I think) and sent Dave off to his eventual doom. Dave did end up in a hospital where they, for whatever reason did not stint him or clean out the artery in his neck?
   I should say that Dave did not follow doctors directions about drinking, working and rest... BUT!