Tony watched in earnest as Remy worked around the guy, doing chest compressions, the bagging, the whole nine yards, with his arms crossed over his chest. Then it made him think that that was how it might have been when he died on the table, how she'd fought to get his heart going again, which made him have to look away a minute before he could stand to watch his wife save a life again.
He half expected House to round the corner any minute and parade his usual jackass attitude, which Tony might have found amusing if Cuddy had come round to kick him for it.
So there he waited for Remy to come out when she'd finished inside.