OK, as you can see: 1 on 4 of those procedures can go awry, and then they have more trouble on their hands. You were lucky the first time, and God blessed you with some more years with your son.

However, your trust may have been misplaced. Not your fault though. The hospitals have gone through a peculiar transformation in the last two years, good nurses and doctors left, some died, and administrators were compensating the system by coining it with covid incentives. This may have encouraged corrupt behaviour. Again I don't know, My point is that the blame could be somewhere obtuse, with a person that is not a doctor or nurse. Also there is the whole Gobal fraud craziness, which is having effects in all sorts of areas. Maybe the room ventilation HVAC had not had the filters changed and there were some particles in his mouth. Maybe a freshly qualified person did the intubation. Maybe a doctor was too under pressure to notice the signs of sepsis. I don't know. There will be many community stakeholders who will want to find fault.

The problem is that the only evidence you can now find is getting buried, and it may be loosely filled in because people were stressed for time.