Which medication is to be administered immediately to the patient?

A) Acetaminophen 325 mg PO prn
B) Insulin aspart 12 units subQ AC
C) Metronidazole 500 mg PO BID
D) Nitroglycerin 0.4 mg sublingual STAT

A STAT order means that you give a single dose of a medication immediately and only once.With standing orders,you carry out a standing order until the health care provider cancels it by another order or until a prescribed number of days elapses.A prn order is an order in which the health care provider orders a medication to be given only when a patient requires it.Single (one-time)orders happen when a prescriber orders a medication to be given only once at a specified time.