I have a 13 year old Yorkie who needs to be put under anthesthia because he really needs to have his teeth cleaned and also seems to have some sort of blockage in his left nostril so the vet needs to take a close look at. He is prone to havig seizures, petit mal seizeures not the grand mal seizures. I am concerened the anthesthia will just be too much for him, not sure what to do.