31. The same total number of daily doses is indicated by both abbreviations in which of the following pairs?
Answer: C
b.i.d. and q12h indicate the same total number of daily doses.
Both b.i.d. (twice a day) and q12h (every 12 hours) result in a total of two doses being administered per day.
A) t.i.d. and q6h
t.i.d. means three times a day, while q6h means every six hours. Since there are four six-hour intervals in a day, these two abbreviations do not indicate the same total number of daily doses, making this option incorrect.
B) q.i.d. and q8h
q.i.d. signifies four doses per day, while q8h indicates a dosing schedule every eight hours, which results in three doses per day. Therefore, these two do not match in terms of total daily doses, rendering this option incorrect.
C) b.i.d. and q12h
Both b.i.d. and q12h indicate administering medication two times per day. b.i.d. represents taking a dose twice daily, while q12h signifies dosing every twelve hours, which also results in two doses per day. This makes this option the correct choice.
D) q.o.d. and q4h
q.o.d. means every other day, which results in one dose every two days, while q4h means every four hours, leading to six doses in a single day. Since these two do not align with respect to the total daily doses, this option is incorrect.
Conclusion
The option b.i.d. and q12h is definitively correct as both indicate two doses per day, while all other options present discrepancies in the total number of doses. Understanding these abbreviations helps in accurately determining medication schedules, which is crucial in clinical settings.