I rang and checked on Dad last night. He was still sleeping and on a ventilator which apparently is normal after this type of op. They were going to let him sleep for a few more hours and then start to wake him.
I've rang this morning to check on his progress. He's now half awake and still on the ventilator. They are going to run some tests on him over the next few hours and hopefully he'll be off the ventilator. I said I'd ring and check on him after lunch with the view of visiting later and they said he may be out of ICU and back on the normal ward.