Which statement about drug abbreviations is true?

1. They are written in lowercase letters.
2. They are written in capital letters.
3. They are written with the first letter in capitals.
4. They are to be avoided.

Which is the correct abbreviation for “after meals?”

1. P.O.
2. P.R.
3. p.c.
4. a.c.

Which abbreviation is unacceptable according to The Joint Commission's “Do not use” list?

1. p.r.n.
2. p.o.
3. mcg
4. S.C.

What is the correct meaning of this order: morphine 4 mg I.M. q4h p.r.n. pain, hold for respiratory rate less than 12 BPM?

1. Administer morphine 4 mg intramuscularly four times per day for pain; hold for respiratory rate less than 12 breaths per minute.
2. Administer morphine 4 mg intramuscularly every 4 hours for pain; hold for respiratory rate greater than 12 breaths per minute.
3. Administer morphine 4 mg intramuscularly every 4 hours as needed for pain; hold for respiratory rate less than 12 breaths per minute.
4. Administer morphine 4 mg intramuscularly every 6 hours for pain; hold for respiratory rate greater than 12 breaths per minute.

How should this drug order be written: “Administer Dilantin 150 mg by mouth twice per day at 0900 hours and 2100 hours; draw Dilantin levels every other day?”

1. Dilantin 150 mg P.O. b.i.d. at 9:00 a.m. and 9:00 p.m., draw Dilantin levels every other day.
2. Dilantin 150 mg P.O. t.i.d. at 9:00 a.m. and 9:00 p.m., draw Dilantin levels q.d.
3. Dilantin 150 mp IV b.i.d. at 9:00 a.m. and 9:00 p.m., draw Dilantin levels q.o.d.
4. Dilantin 150 mg P.R. b.i.d. at 0900 and 2100, draw Dilantin levels q.o.d.