The patient is ordered Compazine 25 mg supp pr q6h prn nausea. If the patient received the last dose at 0600, when can she receive her next dose?

A. 6:00 p.m.: This time is 12 hours after the last dose was administered. The medication order specifies a frequency of "q6h," which means the medication can be given every six hours. A twelve-hour interval is twice as long as the prescribed time. B. 12:00 noon: To determine the next possible dose time, you must add 6 hours to the time of the last dose. The last dose was given at 0600 (6:00 a.m.), and adding 6 hours results in 1200 (12:00 noon) as the earliest possible time for the next dose. C. 3:00 p.m.: This time is 9 hours after the last dose was administered. The prescribed frequency of "q6h" indicates that the medication can be given at an interval of 6 hours. Waiting 9 hours would not be in compliance with the medication order. D. 9:00 a.m.: This time is only 3 hours after the last dose was administered. The medication order of "q6h" requires a minimum of 6 hours to pass between doses. Administering the medication at 9:00 a.m. would violate the prescribed frequency.