Final answer:
The nurse should report a low platelet count to the doctor before administering ceftazidime via intermittent IV bolus.
Step-by-step explanation:
The lab finding that is a priority for the nurse to report to the doctor before administering the medication is low platelet count. Platelets are responsible for blood clotting, and a low platelet count can increase the risk of bleeding. Ceftazidime can also have side effects that affect blood clotting, so it is important to monitor platelet levels before giving the medication.