The Nurse Notes That the Client Has Been Ordered to Receive

The nurse notes that the client has been ordered to receive both aminophylline and dobutamine by IV infusion. The client has one IV access and has been dehydrated. What is the highest priority action on the part of the nurse?

A) Call the pharmacist for additional information on the medications.
B) Start a second intravenous access in the client's arm.
C) Call the physician for orders regarding the medications.
D) Administer the medications using piggyback tubing.