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I know the 2nd ed. BOS says to use q.6 h. (with space between 6 and h), but I heard through the grapevine that this changed and now we're to eliminate the space - has anyone else heard this or has a copy of the 3rd ed. to disprove? Thanks in advance =)
Unfortunately, this is probably something that you should verify with your client or account specifications. Even reference materials differ. I have given examples of what the Book of Style shows and what one of the Medical Transcriptionist “Schools” is teaching its students.
So, it really depends on how the client wants it.
Here is what the Book of Style says:
"Use lowercase abbreviations with periods for Latin abbreviations that are related to doses and dosages. Avoid using all capitals because they emphasize the abbreviation rather than the drug name. Avoid lowercase abbreviations without periods because some may be misread as words."
abbreviation Latin phrase English translation
a.c. ante cibum before food
b.i.d. bis in die twice a day
gtt. guttae drops (better to spell out drops)
n.p.o. nil per os nothing by mouth
n.r. non repetatur do not repeat
p.c. post cibum after food
p.o. per os by mouth
p.r.n. pro re nata as needed
q.4 h. quaque 4 hora every 4 hours
q.h. quaque hora every hour
q.i.d. quater in die 4 times a day
t.i.d. ter in die 3 times a day
u.d. ut dictum as directed
"Note: We have inserted a space after the numeral 4 in q.4 h. on the advice of the ISMP so that the number is more easily and clearly read."
"Invalid Latin abbreviations such as q.a.m. (every morning) and mixed Latin and English abbreviations such as q.4 hours (every 4 hours) have become commonplace. However, as with all abbreviations, avoid those that are obscure (like a.c.b. for before breakfast) or dangerous. For example, b.i.w. is both obscure and dangerous. It is intended to mean twice weekly, but it could be mistaken for twice daily, resulting in a dosage frequency seven times that intended."
"It is acceptable to express a range in dosage times in abbreviated format."
EXAMPLE
q.2-3 h.
q.4-6 h.
"Note: AHDI continues to discourage dropping periods in lowercase abbreviations that might be misread as words (for example, bid and tid). If you must drop the periods, use all capitals, but keep in mind that the overuse of capitals, particularly in relation to drug doses and dosages, would draw more attention to the capitalized abbreviations than to the drug names themselves."
Here is what one “school” is teaching its students:
p.r.n. - as needed
p.o. - by mouth
q.d. - every day
q.i.d. - four times a day
t.i.d. - three times a day
b.i.d. - twice a day
q.6h. - every six hours
q.8h. - every eight hours
q.12h. - every twelve hours
http://www.medical-transcription-online-training.com/
Good Luck.