Your father has got many complex problems. From your description it would appear that he was in multi-organ failure with sepsis
. This is a very serious state which will take many weeks to recover from. It would appear he has shown some indication of recovery if he has a stable blood pressure and does not need dialysis
Weaning from ventilation can take weeks. Some of the drugs that he will have received for sedation will need to be excreted from his body and this is done by the kidneys. As his kidneys have been affected by the organ failure then excretion of the rugs will take much longer.
It will be impossible to make an assessment of his long-term brain function at this stage. His length of stay in ICU
may be many weeks and progress may be slow. The CAT scan can be done with a patient intubated if necessary but is only likely to be done if the results will aid his progress in the ICU.
Regarding his chances of survival, it is impossible to be accurate at this stage as he has a long way to go.
I hope this has helped you. I wish your father well.
Dr K A Pottinger,