| Course | PA 503 Essential Foundations in Clinical Medicine |
|---|---|
| Week | 3 |
| Paper type | Problem representation write-up |
| Length | About 690 words, 5 pages |
| Format | APA 7 student paper |
| School | Chamberlain University |
| Program | Master of Physician Assistant Studies (MPAS) |
| Updated | October 2026 |
Free sample paper for PA 503 Week 3
Problem Representation Write-Up: One Sentence for a Former Heavy Smoker Whose Coughed-Up Blood Began With a Cold, and the Defense of Each Term
Student Name
Chamberlain University
PA 503: Essential Foundations in Clinical Medicine
Instructor Name
Month Day, Year
Problem Representation Write-Up: One Sentence for a Former Heavy Smoker Whose Coughed-Up Blood Began With a Cold, and the Defense of Each Term
The Case as Supplied
A long-haul truck driver, a man of 58, has been bringing up blood-streaked sputum for three weeks and has come in about it. The cough began with a cold. The patient quit smoking six years ago after smoking a pack and a half a day for 24 years. There is no fever, no weight loss and no shortness of breath. A brother was treated for a lung mass last year. On examination, temperature, pulse and oxygen saturation are normal, and scattered rhonchi clear with coughing. The patient takes a blood pressure medicine and no blood thinners.
The Sentence
A 58-year-old former heavy smoker with subacute, streaked hemoptysis following an upper respiratory infection, without fever, weight loss or dyspnea, and with a normal examination apart from transient rhonchi.
Translating the Account
Several details in the account were translated or dropped. "Drives a long-haul truck" was dropped: it matters for daily life and for follow-up planning, but it does not change the probability of any cause of hemoptysis. "A pack and a half a day for 24 years" became "former heavy smoker," which carries the risk without the arithmetic; the pack-years, about 36, stay in the chart. "Three weeks" became "subacute," a semantic qualifier that places the symptom between the days of an acute infection and the months of a chronic process (Bowen, 2006). "Streaks of blood in the sputum" became "streaked hemoptysis," which separates it from frank bleeding and confirms an airway origin. The brother's lung mass was left out of the sentence because a sibling's lung mass, without more detail, adds little to the patient's own risk beyond personal smoking.
Defending Each Term
Former heavy smoker: the single strongest risk factor for lung cancer in this case, and the reason the sentence cannot be read as simple bronchitis.
Subacute: the boundary term. Acute bronchitis usually settles within about three weeks; persistence beyond that raises concern.
Streaked hemoptysis: indicates small-volume bleeding from the airways rather than massive hemoptysis, which would need urgent inpatient care, or pseudohemoptysis from the nose or stomach.
Following an upper respiratory infection: the strongest point in favor of a benign cause, and so it must be included even though it argues against the more serious diagnosis.
Without fever, weight loss or dyspnea: three absences, each arguing against a different alternative, pneumonia, advanced cancer and pulmonary embolism or significant lung disease.
Normal examination apart from transient rhonchi: rhonchi that clear with coughing suggest airway secretions, consistent with bronchitis, and no focal findings suggest no consolidation or mass effect.
The Facing Column
A problem representation should hold features that pull in both directions. In this sentence, "following an upper respiratory infection" and "transient rhonchi" face toward bronchitis. "Former heavy smoker," "58" and "subacute" face toward cancer. Writing both sides into the sentence keeps the reasoning honest; a sentence with only one side would quietly settle the diagnosis before any test.
What the Sentence Opens
The sentence opens two scripts, acute bronchitis and lung cancer, and keeps a third, bronchiectasis, in the background. It also points to the next step. In a primary care cohort, a first episode of hemoptysis in men was followed by a respiratory tract cancer diagnosis within three years in 7.5% of cases (Jones et al., 2007). For a 58-year-old former heavy smoker, a starting probability in that range is too high to dismiss and too low to assume cancer, which is exactly the situation in which imaging is needed.
A Weaker Version, for Contrast
A weaker sentence would read: "A 58-year-old truck driver with a cough and blood in his sputum, probably bronchitis." It keeps an irrelevant detail, the job, drops the smoking history that matters most and names a diagnosis, which ends the reasoning before it starts.
References
Bowen, J. L. (2006). Educational strategies to promote clinical diagnostic reasoning. New England Journal of Medicine, 355(21), 2217-2225. https://doi.org/10.1056/NEJMra054782
Jones, R., Latinovic, R., Charlton, J., & Gulliford, M. C. (2007). Alarm symptoms in early diagnosis of cancer in primary care: Cohort study using General Practice Research Database. BMJ, 334(7602), 1040. https://doi.org/10.1136/bmj.39171.637106.AE
Reading the PA 503 Week 3 instructions
In week three you write a problem representation for a supplied case: a single sentence, usually 20 to 30 words, that captures the patient by the features that bear on diagnosis. Translate the patient's account into semantic qualifiers, such as acute or subacute, and drop details that do not change the probability of any cause. Do not name a diagnosis in the sentence. Then defend each term in a paragraph or two, explaining why it is there and what it argues for or against. Keep features that point toward both benign and serious explanations. Finish by saying which illness scripts the sentence opens and what it suggests about the next step in the workup.
Inside the PA 503 Week 3 example
The supplied case describes a truck driver of 58 with three weeks of blood-streaked sputum after a cold, about 36 pack-years, no fever, weight loss or breathlessness, a brother treated for a lung mass and rhonchi that clear with coughing. The sentence reads: a former heavy smoker with subacute, streaked hemoptysis following an upper respiratory infection, without fever, weight loss or dyspnea, with a normal examination apart from transient rhonchi. The defense explains dropping the job and the brother, translating pack-years and time, and each absence. A facing column shows terms pointing toward bronchitis and toward cancer, and a weaker version is set beside it for contrast.
Reading the PA 503 Week 3 grading rubric
What sinks a write-up fastest is smuggling a conclusion into the sentence: one that announces an infection has stopped reasoning and cannot be argued with. A close second is concrete detail surviving the translation, so a job title, a street name or a favorite food sits in a sentence meant to carry only what bears on diagnosis. Sentences with no semantic qualifiers, defenses that repeat the case rather than justify the terms and representations that include only features favoring one diagnosis also lose points. Strong write-ups produce a short sentence with qualifiers and no diagnosis, defend each term, keep features pointing both ways and show what the sentence opens next. A sentence that omits the strongest risk factor is a quieter but common loss.
Common PA 503 Week 3 mistakes, and how to avoid them
Problem representations are short, which makes every word count, and most first drafts carry details that do not belong. Bring the supplied case and we will work with you to translate the patient's account into qualifiers, decide which details to drop and write a sentence without a hidden diagnosis. We can also help you defend each term clearly. The sentence is yours to finalize. A word range set by your instructor is respected in the custom sample, without dropping the features that point both ways. We can also test your draft sentence against the two or three scripts it should open.
Get a PA-503 Week 3 example written to your instructions
Send the case your section supplied and its own wording for the sentence, and a custom example arrives written to both inside 24 to 48 hours, the first one free. Where a facing column of the patient's own words is asked for, that column is built as well, since the translation between them is the part being marked.
More PA 503 papers and MPAS samples
- PA 503 Week 1: First Question Post
- PA 503 Week 2: Illness Scripts
- PA 503 Week 4: Diagnostic Schema Build
- PA 503 Week 5: Test Characteristics Problem Set
- PA 503 Week 6: Assessment and Plan Draft
- PA 503 Week 7: Verbal Case Summary
- PA 503 Week 8: Diagnostic Error Analysis
- PA 502 Week 3: NNT Calculation
- PA 501 Week 3: State Practice Act Analysis
PA 503 Week 3 questions, answered
Is one sentence really the whole deliverable?
The sentence is the graded object, but almost no section accepts it alone. Expect a supplied case, the sentence, and a defense of a paragraph or two, sometimes with a short passage on what the sentence makes reachable. Precision is what gets marked; the surrounding prose exists to show that the precision was deliberate rather than lucky.
How abstract is too abstract?
The test is whether a reader could still act on it. An adult with two weeks of progressive breathlessness on exertion is abstract and usable. A person with a respiratory problem has abstracted away the time course and the pattern, which were the two things worth keeping. Strip the identity, hold on to the discriminating shape.
Ours calls it a one-liner. Same object?
In most sections yes, though a one-liner sometimes means the opening phrase of a spoken presentation rather than the full abstracted sentence. The difference is whether the time course has to sit inside it. Send the wording your section uses and the example matches that use of the term rather than the general one.
Where can I find a free PA 503 Week 3 sample paper?
This page has the complete PA 503 Week 3 problem representation for a former heavy smoker with streaked hemoptysis, with each term defended.
Why does the PA 503 Week 3 sample drop the patient's job?
Because driving a truck matters for daily life and follow-up but does not change the probability of any cause of hemoptysis.