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Milky Posted 19 years ago
Linguistics Studies

.5mg or 0.5mg. Where prescriptive rules count.

"Please don't sleep through this wake-up call.
ISMP Medication Safety Alert! Acute Care Edition. May 2, 2001.



This is an alert from the Institute for Safe Medication Practices informing readers of a fatal medication error that occurred because of a misinterpreted decimal point. The error involved administration of morphine to a 9-month-old infant who received 5 mg instead of 0.5 mg of the drug. The order did not include a zero before the decimal point, and the nurse filling the order overlooked the omission. The child suffered a cardiac arrest and died. The case illustrates the importance of clearly communicating information about medications."

A tragic story, but would you have written 0.5mg or just .5mg? If nonnative student asked you which was "correct" if written, what would you say?

http://psnet.ahrq.gov/resource.aspx?resourceID=1501
  

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" MrP

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3 Answers
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I would say: "For values less than 1, it's customary to include a zero before the decimal point; unless the context is such that the value will never exceed 1."

MrP
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Hello Milky Emotion: wink

shoddiness kills
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Hi,
.5??? Yeah, I know sometimes it's written or pronounced that way, but I think it's always (or it should be always) 0.5 in "tech" environments. Or at least I hope so. I'd never leave out a zero... btw, in Italian .5 would make no sense at all, you always need the zero.

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