I don’t have anyone currently in ICU but my husband was in intensive care for a few months at the start this year (no jabs available at the time). It is incredibly difficult as a family as you have to wait for the virus to take its course.
What I can say is that the doctors and nurses who work in ICU are beyond incredible. As visiting is restricted they wanted a named contact to call for updates. And that named contact can call anytime night or day. For our family I was the named contact and I did sometimes get comfort from knowing there was relatively little change.
Ventilation for covid is unlike other illnesses as there appears to be relatively little improvements for some time. My husband was ventilated for about three months but he was moved to a tracheotomy as he got ‘stuck’ on the ventilator and stopped making improvements beyond 65% support. The hospital eventually lifted the sedation and put a tracheostomy in place which did eventually mean all support did reduce.
It takes a long time but I’m hoping that there are some more treatments to aid the current patients. Also we had massive issues with kidney function and clots but the clotting issue didn’t arise until about a month after he was sedated. I hope your brother won’t experience these problems.
Practical terms - get the nominated family member established ASAP.
If you can rely on each other as a family then do so. Does your brother have a partner or any children? How are your parents holding up?
What I will say is, for us it was a long, drawn out experience and a very dark period of time. I needed support due to the relentlessness of the situation. There would be bad days, good days and days with no progress at all. Get food sorted - easy ready meals/takeaway etc. Most people will offer help and support. Please take it.
And finally I send you a very big hug, it is immensely stressful and painful. I hope your brother starts to make improvements soon and my thoughts are with you