Final answer:
A DVM must perform a current physical exam to ensure the dog's fitness for anesthesia and dental prophylaxis. Afterward, an RVT may proceed with anesthesia and teeth cleaning, under the supervision of the DVM.
Step-by-step explanation:
The appropriate step after a dog is admitted for dental prophylaxis and has had pre-anesthetic blood tests taken a week earlier would generally involve the vet performing an updated physical examination. However, in a scenario where the DVM is already on-site, but occupied with other clients, it is likely that the DVM must first perform a physical exam to ensure that the dog is still fit to undergo anesthesia and the dental procedure safely. Once the DVM has determined the dog's fitness for the procedure, typically a Registered Veterinary Technician (RVT) may proceed with administering the anesthesia and performing the teeth cleaning under the supervision of the DVM.
Practices may vary slightly depending on regulations and protocols in place at a particular clinic or hospital, but the critical common point is the requirement of a current physical exam by the DVM to confirm that the patient is still an appropriate candidate for anesthesia and the procedure.