Qhs
Every night at bedtime
What Qhs stands for
Qhs is a medical abbreviation for every night at bedtime - written out in full as “Quaque hora somni”. TermDecode files it under frequency abbreviations.
Risk
ISMP lists Qhs as error-prone: it may be mistaken as qhr (every hour).
Safer Alternative
Use "QHS" or "qhs" for bedtime
Seen in context
Qhs misread as qhr
Sources
The risk description and safer alternative above are reproduced from these published lists.
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