FROM MY PT SCHOOL NOTES · CARDIOPULMONARY · FOUNDATION PRACTICE
Cardiopulmonary: Three Clinical Reasoning Checks
These three original scenarios ask you to interpret the patient and the information rather than simply recall a definition. Choose your answer before expanding the explanation. They are not NPTE exam questions or an assessment of clinical competency.
1. Make the next clinical decision
A hospitalized patient is referred for a walking trial. At rest today, they report significantly worse breathlessness than yesterday. The pulse oximeter reads 96% with a good waveform.
A. Start walking because SpO2 is in a commonly acceptable range
B. Reassess the new symptom change and communicate/escalate before deciding whether to walk
C. Perform repeated sit-to-stands to determine whether weakness is the cause
Reveal answer and explanation
Best answer: B. New clinically concerning breathlessness changes the decision, and a single oxygen-saturation value cannot evaluate circulation, ventilation or overall status. The exam and escalation come before exertion.
2. Make the next clinical decision
A spirometry report provides FEV1 1.5 L, FVC 2.5 L and FEV1/FVC 0.60. There is no information about bronchodilator testing or clinical history.
A. This alone confirms COPD
B. This alone confirms restrictive lung disease
C. This suggests an obstructive pattern, but the disease and significance require further context
Reveal answer and explanation
Best answer: C. The ratio is reduced, suggesting airflow obstruction in a technically acceptable test. COPD requires appropriate clinical context and post-bronchodilator data; a low ratio does not confirm restriction.
3. Make the next clinical decision
A patient reports exertional calf discomfort that settles with rest. A vascular report lists an ABI of 1.46, but the chart note calls the study normal.
A. Accept it as normal because the value exceeds 0.90
B. Recognize that an ABI above 1.40 can indicate noncompressible vessels and needs appropriate interpretation
C. Treat this as proof that all lower-limb pain is neurologic
Reveal answer and explanation
Best answer: B. High ABI values can reflect noncompressible arteries, particularly with diabetes or chronic kidney disease. The clinical pattern and appropriate vascular studies inform the next decision.
Where to review
Chapter 2 covers cardiopulmonary examination and new symptom changes, Chapter 3 reviews ventilatory patterns and lung-function test interpretation, and Chapter 4 covers cardiac and peripheral vascular concerns. Review the full explanations rather than memorizing a letter.
Sources & scope
Teaching scenarios independently drafted from my original cardiopulmonary notes and compared against GOLD 2026 and the 2024 ACC/AHA PAD guideline. For class-companion learning only; not a clinical protocol.
