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Abbreviations of weights and measures are pronounced using the expansion of the unit (mg = "milligram") and chemical symbols using the chemical expansion (NaCl = "sodium chloride"). Some initialisms deriving from Latin may be pronounced either as letters ( qid = "cue eye dee") or using the English expansion ( qid = "four times a day").
This is a list of abbreviations used in medical prescriptions, including hospital orders (the patient-directed part of which is referred to as sig codes).This list does not include abbreviations for pharmaceuticals or drug name suffixes such as CD, CR, ER, XT (See Time release technology § List of abbreviations for those).
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.
Abbreviation Meaning Δ: diagnosis; change: ΔΔ: differential diagnosis (the list of possible diagnoses, and the effort to narrow that list) +ve: positive (as in the result of a test) # fracture: #NOF: fracture to the neck of the femur ℞ (R with crossed tail) prescription: Ψ: psychiatry, psychosis: Σ: sigmoidoscopy: x/12: x number of ...
A or Ala – alanine. C or Cys – cysteine. D or Asp – aspartic acid. E or Glu – glutamic acid. F or Phe – phenylalanine. H or His – histidine. I or Ile – isoleucine. K or Lys – lysine. L or Leu – leucine.
Historically, it was a physician's instruction to an apothecary listing the materials to be compounded into a treatment—the symbol ℞ (a capital letter R, crossed to indicate abbreviation) comes from the first word of a medieval prescription, Latin recipere (lit. ' take thou '), that gave the list of the materials to be compounded.
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; External links "CDC A-Z Index" Centers for Disease Control and Prevention website "Disorder Index". National Institute of Neurological Disorders ...
Abbreviation Meaning o: Nothing [ō—letter o with overbar] O 2: oxygen: OA: osteoarthritis: OAB: Overactive bladder: OAF: osteoclast activating factor OB: Occult blood OB OB-GYN ob-gyne: obstetrics and gynecology: Obl: oblique OBS: organic brain syndrome: Occ: occasional OCD: obsessive-compulsive disorder: OCG: oral cholecystogram: OCNA ...