It is indeed with a Brainiac's cold, clinical detachment that he starts working on Sam's brain, the anti-microbe field humming away and making everything sterile around the med-table. Various tubes and whatnot appear to inject Sam with things like packed blood cells, and syringes jab him with anaesthesia--yes, Brainy had started working without it, although only by cleaning and preparing the outer wound; he's not touching the gooey stuff until the anesthesia kicks in.

But it's not like Sam's in any state to really notice.

Scans are running in real-time, both in floating holo screens and the goggles, showing Brainy where the damage is. The bullet appears to have left very few bullet fragments behind. The wound is rather clean. This is good. Most of the debris is bone tissue. The swelling and bleeding are severe, though, and it's crossed both hemispheres, oblitering the entirety of the frontal lobes.

That...is bad.

"When all the infested have been detained, and the current crisis is over. I can maintain control as long as I need to. Are Superboy and Speedy infested as well, or was I correct that it's just Kate?"

He's likely correct.