Frequency
HS
Half-strength or at bedtime
Risk
ECRI/ISMP 2024 update notice says not to use HS to mean at bedtime; HS may also be used locally for half-strength, so the intended meaning should be written out.
Safer Alternative
Use "QHS" or "qhs" for bedtime; write "half-strength" when that is intended
Example
HS bedtime instruction misread or applied inconsistently
Source Note
Source note: this token is from the ECRI/ISMP 2024 update notice; it is not printed as a row in the current PDF text.