A nurse is about to administer a parenteral benzodiazepine to a client in the hospital before the performance of an invasive diagnostic procedure. What action should the nurse prioritize before administration of the drug?

Auscultate the client's lungs and set up pulse oximetry monitoring.

Close the blinds and ensure appropriate room temperature for the client.

Help the client out of bed to the bathroom and encourage the client to void.

Ask all visitors to leave the room and remain in the waiting area.