Final answer:
The only indication for initiating beta blockers perioperatively is for patients who are already on beta blockers for existing conditions, to prevent cardiac complications during surgery.
Step-by-step explanation:
The only indication for initiating beta blockers perioperatively is for patients who are already taking beta blockers for pre-existing conditions, such as cardiovascular disorders. The goal is to continue the beta blockade to prevent potential cardiac complications during surgery. In these cases, beta blockers are not started just because of the operation but are part of ongoing treatment.
It is important to confirm that prophylactic antibiotics have been administered 60 minutes before the incision is made or that antibiotics are not indicated, and that all essential imaging results for the correct patient are displayed in the operating room. These checks are essential for patient safety but are not directly related to the administration of beta blockers.