No need to sedate as sutures are very quick and easy to remove. If we have an animal that we know would be difficult to remove them ,then we would generally use internal sutures and glue or dissolvable sutures. Hope that helps.
As above...and you will notice the dog is significantly better after they are removed as the skin is no longer being pulled taut. I speak from experience, having recently had seven stitches removed from my scalp..afterwards the relief was immense and I wasn't aware at the time how much they were pulling.