A client is scheduled to receive atenolol 25 mg PO and diltiazem 60 mg PO at 0800. The nurse assesses the client's heart rate as 45 beats/minute and irregular. What is the best nursing action at this time?

Administer the medications at different times to provide an even blood level

Assess the client's blood pressure and if the BP is normal, administer the medications

Document the pulse rate and administer the medications as prescribed

Withhold the medications and reassess the heart rate in 30 minutes