PAC 115 Module 7 Abbreviations and Safe Use Example

Shorter Is Not Always Safer: Medical Abbreviations, Their Errors and Their Safe Use

Student Name

Psychology and Addiction Studies Program, Aspen University

PAC 115: Medical Terminology

Instructor Name

Month Day, Year

Shorter Is Not Always Safer: Medical Abbreviations, Their Errors and Their Safe Use

Medical records are full of abbreviations. They save time for the writer, but every abbreviation asks the reader to decode it correctly, and some are easily misread. A U for units can be read as a zero, turning 4 units of insulin into 40; a missing zero before a decimal point can turn 0.5 milligrams into 5. This paper explains the abbreviations an addiction professional commonly meets, reviews the forms that national safety organizations warn against and the evidence on how often they appear, and sets out rules for writing and reading abbreviations safely.

Common Abbreviations in Addiction Treatment

Addiction treatment records use abbreviations for diagnoses, tests and assessments. SUD stands for substance use disorder, with AUD for alcohol use disorder and OUD for opioid use disorder. MOUD means medications for opioid use disorder. UDS means urine drug screen, and BAC blood alcohol concentration. Withdrawal is often measured with the CIWA-Ar, a scale for alcohol withdrawal, or the COWS, a scale for opioid withdrawal. Medication orders use route and timing abbreviations such as PO, by mouth, SL, under the tongue, as for buprenorphine, and PRN, as needed.

Why Abbreviations Cause Errors

Abbreviations cause errors in three ways. Some look like numbers or other letters when handwritten or poorly printed, such as U for units. Some carry two meanings; MS, for example, may stand for either of two very different drugs, morphine sulfate and magnesium sulfate. And some are unfamiliar to the reader, especially across professions and settings. When an abbreviation affects a medication dose, a misreading can cause serious harm.

National Safety Lists

Two lists guide safe practice in the United States. The Joint Commission requires accredited organizations to maintain a Do Not Use list that includes U and IU for units, the daily abbreviation QD and its every-other-day cousin QOD, trailing zeros after a decimal point, missing leading zeros before one, and MS, MSO4 and MgSO4. The Institute for Safe Medication Practices maintains a longer catalog of risky abbreviations, symbols and ways of writing doses, with the misinterpretation each can cause and the recommended alternative (Institute for Safe Medication Practices, 2021).

How Often They Appear

Despite these lists, error-prone abbreviations remain common. In an evaluation of inpatient prescribing at three Australian hospitals, Dooley et al. (2012) found that 76.9% of patients had at least one error-prone abbreviation in their medication orders, that 8.4% of all orders contained one, and that 29.6% of those were considered high risk for significant harm. Electronic records reduce some problems, such as illegible handwriting, but free-text fields and copied notes still carry abbreviations forward.

Dangerous Abbreviations and Safer Choices

The table lists abbreviations that commonly cause errors, the error each can cause and the safer alternative.

Abbreviations With Several Meanings

Some abbreviations are ambiguous even when read correctly. SOB can mean shortness of breath, and it has a very different everyday meaning, which is why many organizations discourage it. PT can mean patient, physical therapy or prothrombin time. ETOH, from the chemical name of ethanol, means alcohol, but the same letters can confuse readers outside medicine. When an abbreviation could mean more than one thing in context, the term should be written out.

Rules for Safe Use

A few rules prevent most problems. Use only abbreviations on your organization's approved list. Never abbreviate units, daily or every other day. Always put a zero before a decimal point and never after a whole number. Write out drug names rather than abbreviating them. In documents a client or family will read, avoid abbreviations entirely. And when reading, check any abbreviation that affects safety rather than guessing its meaning.

The Counselor's Role

Addiction counselors rarely write medication orders, but they read records, write progress notes and share information with other providers. A counselor who writes UDS neg x3 in a note may be clear to colleagues and baffling to a client who later reads the record. Writing that three urine drug screens were negative is only a few words longer, and plain wording is understood far better by the public than clinical shorthand (Gotlieb et al., 2022). Counselors also help clients understand their medication instructions and should ask a nurse or pharmacist whenever an abbreviation in an instruction is unclear.

Abbreviations in Electronic Records

Electronic health records reduce some abbreviation errors, since typed text removes the problem of illegible handwriting and order-entry systems can block error-prone forms. They introduce others. Drop-down menus may list similar abbreviations next to each other, making a wrong selection easy. Copy-and-paste can carry an ambiguous abbreviation from note to note for months. And free-text fields, where clinicians type instructions directly, bypass the system's safeguards entirely.

Organizations respond by building approved abbreviation lists into the record, flagging error-prone forms when they are typed and auditing notes periodically. For a counselor, the practical lesson is the same as on paper: write out anything that could be misread, especially in instructions a client will follow, and never assume that because a record is electronic, its abbreviations are safe.

Conclusion

Abbreviations save seconds and can cost safety. The forms on national safety lists, such as U for units, QD, trailing zeros and MS, have caused real harm, and evidence shows they remain common in prescribing. Using approved abbreviations only, writing out anything that affects a dose, and avoiding abbreviations in documents clients read are simple habits that prevent errors and make records clearer for everyone.

References

Dooley, M. J., Wiseman, M., & Gu, G. (2012). Prevalence of error-prone abbreviations used in medication prescribing for hospitalised patients: Multi-hospital evaluation. Internal Medicine Journal, 42(3), e19-e22. https://doi.org/10.1111/j.1445-5994.2011.02697.x

Gotlieb, R., Praska, C., Hendrickson, M. A., Marmet, J., Charpentier, V., Hause, E., Allen, K. A., Lunos, S., & Pitt, M. B. (2022). Accuracy in patient understanding of common medical phrases. JAMA Network Open, 5(11), Article e2242972. https://doi.org/10.1001/jamanetworkopen.2022.42972

Institute for Safe Medication Practices. (2021). ISMP list of error-prone abbreviations, symbols, and dose designations. https://www.ismp.org/recommendations/error-prone-abbreviations-list