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Abbreviation Meaning q: each, every (from Latin quaque) q15: every 15 minutes q6h q6° once every 6 hours q2wk: once every 2 weeks qAc Before every meal (from Latin quaque ante cibum) q.a.d. every other day (from Latin quaque altera die) QALY: quality-adjusted life year: q.AM: every day before noon (from Latin quaque die ante meridiem) q.d.
once per day o.s. oculus sinister: left eye o can be mistaken as an a which could read "a.s.", meaning left ear o.u. oculus uterque: both eyes o can be mistaken as an a which could read "a.u.", meaning both ears oz ounce p. perstetur: continue part. æq. partes æquales: equal parts per: per: by or through p.c. post cibum: after meals p.c.h.s ...
The main discussion of these abbreviations in the context of drug prescriptions and other medical prescriptions is at List of abbreviations used in medical prescriptions. Some of these abbreviations are best not used, as marked and explained here.
6WK - six times a week 5WK - five times a week 4WK - four times a week 3WK - three times a week 2WK - twice a week: I dispute this, more likely "1 qds for 2wk" meaning 1 taken 4 times a day for 2 weeks QWK - once a week: Needs verifying common abbreviation 2MT - twice a month: Needs verifying common abbreviation QMT - once a month
Abbreviations are used very frequently in medicine. They boost efficiency as long as they are used intelligently. The advantages of brevity should be weighed against the possibilities of obfuscation (making the communication harder for others to understand) and ambiguity (having more than one possible interpretation).
Use of abbreviations, such as those relating to the route of administration or dose of a medication, can be confusing and is the most common source of medication errors. [2] Use of some acronyms has been shown to impact the safety of patients in hospitals, and "do not use lists" have been published at a national level in the US.
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List of medical abbreviations: Overview; List of medical abbreviations: Latin abbreviations; List of abbreviations for medical organisations and personnel; List of abbreviations used in medical prescriptions; List of optometric abbreviations