Final answer:
A pharmacist can complete a partial fill to help a patient until their prescriber can call in a new prescription for heart medication.
Step-by-step explanation:
If a patient comes in and requests a refill on their heart medication, but there are no additional refills available, a pharmacist can complete a partial fill to help the patient until their prescriber can call in a new prescription. A partial fill is when the pharmacist dispenses a portion of the prescription, usually a smaller quantity, to provide immediate relief for the patient's need. This allows the patient to have some medication while waiting for the full prescription to be obtained.