It's not a pleasant experience and Potemkin is aware of that, but he keeps a steady hand throughout it. He knows the reasons for doing this and it would be worse to panic in the middle.

When the entire wound has been covered, Potemkin moves to laying the bandage over it and getting the adhesive to stick. He smoothes out the cloth surface with a sweeping press of his hand, going across the length of it as it curves around Ky's body. "You're a model patient," Potemkin finally allows himself to talk. It's a stock compliment like what you would hear from a family doctor (or, more appropriately to Potemkin's experiences, a field medic).