I would say that 8 weeks orientation is on the short side, but to be frank, you never stop learning in CTICU/CVICU and it takes several years
to get really comfortable. Fresh post-ops are heavy on fluid replacement as they third shift everything, as well as bleeding management (giving lots of PRBCs, FFP, Platelets, managing clotting chest tubes), while at the same time
, dealing with confused/restless/intubated patients, multiple inotropes/pressors/insulin drip, rhythm changes/pacemakers, family ... and hopefully you're one-to-one and not managing another patient at the same time!
Good comaradere with solid team members is key to survival.
It's very challenging so say the least.