HS111 Unit 5 Medical Abbreviation Review Example

Reviewed by Elspeth Marlowe, MSN, RN Medical Terminology Purdue University Global Free custom sample in 24 to 48h

The HS111 Unit 5 abbreviation review sorts clinical shorthand that collides, PE, RA, MS, CP, BS and ARF, giving every accepted expansion and the one that a sample chart sentence supports. Purdue Global HS 111 asks BS in Health Science learners to read abbreviations in context and to recognize those retired for safety. The sample explains why specialties developed overlapping shorthand, then decodes six colliding abbreviations, from PE meaning pulmonary embolism in a CT order to RA meaning room air beside an oxygen reading. A second section lists entries retired by the Joint Commission's do-not-use list and a medication safety institute's error-prone list, such as U, IU, QD and trailing zeros, with the error each causes. Practical rules close the review.

CourseHS111 Medical Terminology
UnitUnit 5
Paper typeAbbreviation review
LengthAbout 560 words, 5 pages double-spaced
FormatAPA 7 student paper
SchoolPurdue University Global
ProgramBS in Health Science
UpdatedOctober 2026

Free sample paper for HS111 Unit 5

1

Two Letters, Three Diagnoses: A Unit 5 Abbreviation Review of Colliding Shorthand and the Entries a Do-Not-Use List Retires

[Student Name]

Purdue University Global

HS111: Medical Terminology

Unit 5 Abbreviation Review

[Instructor Name]

[Date]

The chart contexts are invented for illustration; the do-not-use and error-prone lists cited are real.

What this part is doingPromising both collisions and retired entries in the lead tells the reader the review covers ambiguity and danger, which are different problems.
2

Why Abbreviations Collide

Clinical shorthand developed separately in different specialties, so the same letters came to stand for different things. A cardiology note and a gastroenterology note can both use the same two letters with no confusion inside their own department, and real confusion when a note crosses departments. Context, not the letters, decides the meaning (Ehrlich et al., 2021).

Colliding Abbreviations

1. PE. Expansions: pulmonary embolism; physical examination; pleural effusion; pressure equalization, as in PE tubes for the ears. Context sentence: "CT angiogram ordered to rule out PE." Supported meaning: pulmonary embolism, because a CT angiogram images the pulmonary arteries.

2. RA. Expansions: rheumatoid arthritis; right atrium; room air. Context: "SpO2 94% on RA." Supported meaning: room air, because oxygen saturation is reported against the oxygen the patient is breathing.

3. MS. Expansions: multiple sclerosis; mitral stenosis; morphine sulfate; magnesium sulfate. Context: "History of MS, on disease-modifying therapy." Supported meaning: multiple sclerosis. Note that MS for morphine or magnesium is on error-prone lists, because confusing the two drugs can be fatal.

4. CP. Expansions: chest pain; cerebral palsy. Context: "Pediatric patient with CP, spastic diplegia." Supported meaning: cerebral palsy, since spastic diplegia is a form of it.

5. BS. Expansions: bowel sounds; blood sugar; breath sounds. Context: "Abdomen soft, BS present in all four quadrants." Supported meaning: bowel sounds.

6. ARF. Expansions: acute renal failure; acute respiratory failure. Context: "Creatinine rising, ARF likely prerenal." Supported meaning: acute renal failure, because creatinine reflects kidney function.

The letters never resolve an abbreviation; the sentence around them does, and when the sentence does not, the abbreviation should be written out.

What this part is doingStating the rule for when to spell a term out shows the review leads to a practice, not only a list.
3

Entries Retired by Do-Not-Use and Error-Prone Lists

The Joint Commission's official do-not-use list applies to orders and medication documentation in accredited organizations, and a broader list of shorthand prone to error comes from a medication safety institute (Institute for Safe Medication Practices, 2021; The Joint Commission, 2023).

7. U for unit. Can be misread as 0 or 4, turning 10 units into 100. Write "unit."

8. IU for international unit. Can be misread as IV or 10. Write "international unit."

9. QD and QOD. Can be confused with each other, causing daily or every-other-day dosing errors. Write "daily" and "every other day."

10. Trailing zero, as in 5.0 mg. The decimal can be missed, giving 50 mg. Write 5 mg.

11. Missing leading zero, as in .5 mg. The decimal can be missed, giving 5 mg. Write 0.5 mg.

12. MS, MSO4 and MgSO4. Can mean morphine sulfate or magnesium sulfate. Write the drug name in full.

What this part is doingGiving the reason each retired entry causes harm makes the list memorable, since a rule with its reason is easier to keep.
4

Practical Rules Drawn From the Review

Write a term in full whenever its short form could be read two ways in the reader's specialty. Never use retired abbreviations in orders, even in notes where they seem harmless. When reading, decide the meaning from the clinical context and check with the author when context does not settle it.

Limits

The context sentences are invented for practice. Accepted abbreviations vary by organization, and each facility's approved list governs local documentation.

5

References

Ehrlich, A., Schroeder, C. L., Ehrlich, L., & Schroeder, K. A. (2021). Medical terminology for health professions (9th ed.). Cengage Learning.

Institute for Safe Medication Practices. (2021). ISMP list of error-prone abbreviations, symbols, and dose designations. Institute for Safe Medication Practices.

The Joint Commission. (2023). Official "Do Not Use" list. The Joint Commission.

Reading the HS 111 Unit 5 instructions

The fifth unit usually asks students to review common medical abbreviations, often including those with multiple meanings and those on official do-not-use or error-prone lists. A worksheet of two to four pages is typical. Instructors expect each abbreviation to be expanded correctly, with attention to how context determines meaning where letters collide. Many prompts ask students to identify abbreviations that should not be used and to explain why. Citing the specific list named in course materials, commonly the Joint Commission's, is expected. Some sections also ask students to write rules for their own documentation, which shows they can apply the review rather than only recite it.

Inside the HS111 Unit 5 example

The review opens with a short explanation of why abbreviations collide across specialties. Six numbered entries follow, each listing every expansion, a context sentence and the meaning that context supports, with a note that MS for morphine or magnesium appears on error-prone lists. The highlighted sentence states the rule that context, not letters, resolves an abbreviation. Six retired entries follow, each with the misreading it causes and the safe alternative. A section turns the review into three practical rules for writing and reading notes, and a limits section notes that each facility's approved list governs local practice. Every context sentence is invented for practice, so no real chart details appear.

HS111 Unit 5 rubric: what earns full points

Abbreviation reviews are commonly graded on accuracy of expansions, correct use of context, coverage of do-not-use and error-prone entries, explanation of risks and practical application. Accuracy often carries the most points, since one wrong expansion can change a clinical meaning. Context use earns credit when each collision is resolved by reasoning from the surrounding sentence. Coverage of retired entries is expected in most sections, with the reason each causes harm. Practical rules show that the student can apply the review in documentation. Correct citation of the official list and consistent formatting complete the score. Reviews that list expansions without context usually earn partial credit. Reviews that end with rules a reader could apply in their own notes tend to score highest.

HS111 Unit 5 help from the desk

A frequent weakness is listing one expansion for an abbreviation that has several, which misses the point of the unit. Another is omitting the reason an abbreviation is retired, leaving the rule unexplained. Some students cite an outdated or unofficial list instead of the one named in course materials. Others use retired abbreviations in their own explanations without noticing. Context sentences that do not actually resolve the meaning weaken the analysis. If your instructor assigned a different set of abbreviations, send the list and the do-not-use source your course uses, and a review can be drafted with expansions, context and rules. Inventing context sentences that do not clearly point to one expansion leaves the reader guessing.

Get an HS111 Unit 5 example written to your instructions

Your section's Unit 5 list, the instructions and the rubric are all that is needed. From those, a custom abbreviation review arrives in 24-48h, laid out the way your prompt asks and citing the safety list your course uses. Nothing is charged the first time. Where the prompt supplies chart phrases, they are used as given. The paper above is an original model document written by our desk, not a submitted student paper and not an official Purdue University Global document.

Request this unit free All HS111 units Finished samples

More HS111 papers and BS in Health Science samples

HS111 Unit 5 questions, answered

Which do-not-use list should I cite?

Whichever one your course materials name, most often the official list from The Joint Commission, sometimes supplemented by the ISMP list of error-prone abbreviations, which is longer. They overlap but are not identical, so citing one and quoting the other causes confusion. If the prompt does not say, the Joint Commission list is the conventional default in allied health courses.

Should I avoid abbreviations entirely in my own writing?

Not entirely. Standard units such as mg and mL, and widely recognized terms such as CPR expanded at first use, are generally fine. The ones to avoid are those on the do-not-use list and any whose meaning your reader might have to guess. In a course assignment the safe habit is to spell out anything the reviewer would need context to decode.

Why does context matter if the letters are the same?

Because the letters are the same. BS in an abdominal exam means bowel sounds, in a lung exam breath sounds, and beside a glucose reading blood sugar. A reader resolves the ambiguity from the surrounding words, and the review shows that reasoning explicitly. Where the surroundings cannot settle it, the full term is the only safe choice, which is why many facilities discourage that abbreviation.

Where can I find a free HS111 Unit 5 sample paper?

The complete Unit 5 abbreviation review is shown here, resolving colliding shorthand by context and listing entries retired for safety.

Why is U for unit on the do-not-use list?

A handwritten U can be misread as a zero or a four, so 10 U may be read as 100. Writing the word unit prevents tenfold dosing errors.