@Bunny2607 I’m so sorry to hear about your nana.
With a brain injury like that the opinion of the team would be based on a combination of things, scans and other tests like EEG’s (which assess the messages that are being passed through the brain, the ‘brain waves’ if you like) as well as clinical signs like level of consciousness and the presence or absence of seizures. When we turn off sedation we assess a persons response, and either there is no return of consciousness or they wake along a scale of consciousness. They can also, with a brain injury, become agitated, distressed in trying to breathe with the ventilator or suffer very high heart rates or blood pressure. However, we have to keep them off sedation for long enough to decide that they are not going to wake up in any meaningful way. It would not have been the withdrawal of sedation that caused her to pass away.
Obviously I can’t comment really on your Nanas case as I wasn’t there. But, she would have had a raft of tests to ensure that her brain was so damaged that she had no prospect of recovery. We don’t really know to be honest whether people can hear us although we always try to behave as if they do, but in my opinion if someone’s brain is damaged that badly then although they might hear they would probably not be able to interpret the sounds as speech. However that is not say that there is no point in talking to them.
The brown liquid coming out of her mouth would have been very distressing to see and I’m sorry you had to experience that. It would likely have been a little bit if stomach contents coming up the oesophagus and coming out of her mouth.
In conclusion, if the ICU team and neurologists were confident that there was no chance of meaningful recovery then I’m sure they were right and no amount of time would have changed that. Once again I’m sorry for your loss.