Which of the following does NOT require a Prospective Drug Review (PDR)?

A drug dispensed in an emergency room does not require a Prospective Drug Review (PDR) primarily due to the nature of the setting and the urgency of patient care. In emergency situations, healthcare providers must act swiftly to stabilize patients, and this often limits the time available for comprehensive drug reviews.

In contrast, outpatient prescriptions, scheduled refills for chronic conditions, and drugs dispensed by pharmacists to practitioners involve more stable and controlled contexts where PDR is important. These settings allow for adequate time to evaluate the patient's medication history, potential drug interactions, appropriateness of therapy, and other safety considerations, ensuring optimal patient care and medication safety. Therefore, the exception for PDR in the emergency room reflects the necessity for rapid intervention over the more preventive approach taken in other circumstances.