Just got the call that the valve has been replaced, Nick is off the heart/lung bypass machine (which means his heart is pumping on its own again now) and he is in the "rewarming" period which is where his blood pressure is normalizing. He's still an hour to an hour and a half away from the end of surgery and being closed up, but the first phase is done!
Still working on the post about this morning...:)
Keep the prayers coming! Thank you, thank you, thank you!