Bipass and heart valves

Been a busy week my Dad had 4 way bipass and 2 new mechanical heart valves done last Thurday...He is still on the vent...He had a CT scan yesterday to check his brain and as far as I know that came back normal..He started following commands in last couple of days and that is what he needs to do to to get off the vent...Maybe he was able to be weaned off I will know in about and hour... So like I said its been a very busy week ...