Module 3 Discussion: Initial Post
Chest Pain in the Clinic: Three First Steps and Two Diagnoses That Cannot Wait
Consider a composite 58-year-old woman who walks into a primary care clinic reporting chest pressure that began 40 minutes ago while she was carrying groceries. My first three steps would be these.
First, rapid stability assessment. Before a full history, I would check airway, breathing, and circulation, obtain vital signs including oxygen saturation, and look for signs of shock, respiratory distress, or altered mental status. An unstable patient needs emergency services immediately, not a longer interview.
Second, an electrocardiogram within 10 minutes. The 2021 AHA/ACC chest pain guideline recommends an ECG within 10 minutes of arrival for patients with acute chest pain, because ST-segment elevation changes management instantly (Gulati et al., 2021). In an office without the capability for rapid troponin testing, the guideline advises urgent transfer by emergency medical services for patients with acute chest pain rather than further evaluation in the clinic.
Third, a focused history and examination while the ECG is obtained: onset, character, location, radiation, duration, associated symptoms such as dyspnea, diaphoresis, nausea, or syncope, risk factors, recent immobilization or travel, and examination of the heart, lungs, legs, and pulses. The guideline also cautions against describing pain as "atypical"; it recommends describing it as cardiac, possibly cardiac, or noncardiac, since women and older adults often present with symptoms other than classic crushing pain (Gulati et al., 2021).
Two differentials would lead to very different treatment. Acute coronary syndrome is suggested by exertional pressure, radiation to the arm or jaw, diaphoresis, and cardiac risk factors. It is treated with aspirin, antithrombotic therapy, and, depending on ECG and troponin results, urgent reperfusion with percutaneous coronary intervention. Pulmonary embolism is suggested by pleuritic pain, sudden dyspnea, tachycardia, hypoxemia, recent surgery or travel, or unilateral leg swelling. It is evaluated with clinical probability tools, a D-dimer in low-risk patients, and CT pulmonary angiography, and treated with anticoagulation or, in high-risk patients with shock, systemic thrombolysis (Konstantinides et al., 2020). In patients judged low risk, the pulmonary embolism rule-out criteria can identify those who need no further testing (Kline et al., 2004). The two conditions share chest pain and dyspnea but diverge completely once the diagnosis is made: one opens an artery, the other thins the blood.
For our patient, exertional pressure in a woman with risk factors points first toward acute coronary syndrome, but her history would still be checked for recent travel or leg swelling. What tools do others use to organize chest pain differentials quickly in an outpatient setting?
References
Gulati, M., Levy, P. D., Mukherjee, D., Amsterdam, E., Bhatt, D. L., Birtcher, K. K., Blankstein, R., Boyd, J., Bullock-Palmer, R. P., Conejo, T., Diercks, D. B., Gentile, F., Greenwood, J. P., Hess, E. P., Hollenberg, S. M., Jaber, W. A., Jneid, H., Joglar, J. A., Morrow, D. A., ... Shaw, L. J. (2021). 2021 AHA/ACC/ASE/CHEST/SAEM/SCCT/SCMR guideline for the evaluation and diagnosis of chest pain: A report of the American College of Cardiology/American Heart Association Joint Committee on Clinical Practice Guidelines. Circulation, 144(22), e368-e454. https://doi.org/10.1161/CIR.0000000000001029
Kline, J. A., Mitchell, A. M., Kabrhel, C., Richman, P. B., & Courtney, D. M. (2004). Clinical criteria to prevent unnecessary diagnostic testing in emergency department patients with suspected pulmonary embolism. Journal of Thrombosis and Haemostasis, 2(8), 1247-1255. https://doi.org/10.1111/j.1538-7836.2004.00790.x
Konstantinides, S. V., Meyer, G., Becattini, C., Bueno, H., Geersing, G.-J., Harjola, V.-P., Huisman, M. V., Humbert, M., Jennings, C. S., Jiménez, D., Kucher, N., Lang, I. M., Lankeit, M., Lorusso, R., Mazzolai, L., Meneveau, N., Ní Áinle, F., Prandoni, P., Pruszczyk, P., ... Pepke-Zaba, J. (2020). 2019 ESC guidelines for the diagnosis and management of acute pulmonary embolism developed in collaboration with the European Respiratory Society (ERS). European Heart Journal, 41(4), 543-603. https://doi.org/10.1093/eurheartj/ehz405
How this N 518 Module 3 example is structured
N518 Module 3's discussion typically asks for the first three assessment steps for a patient with chest pain and at least two differential diagnoses with differing treatment approaches. The module's ShadowHealth work is your own and is not sampled. Aspen revises courses, so check your classroom's prompt. This example prioritizes steps by guideline, explains why each comes first and contrasts two differentials through presentation, testing and treatment, ending with a question for peers.
N518 Module 3 questions, answered
What does N518 Module 3 usually ask for?
The discussion asks you to describe the first three assessment steps for a patient presenting with chest pain and then present at least two differential diagnoses whose treatment differs. ShadowHealth work for the module is your own.
How quickly should an ECG be done for acute chest pain?
The 2021 AHA/ACC chest pain guideline recommends an ECG within 10 minutes of arrival, and it advises transfer by emergency services from office settings that cannot rapidly test troponin.
Why should chest pain not be called atypical?
The 2021 guideline recommends describing chest pain as cardiac, possibly cardiac or noncardiac, because the word atypical has been used to dismiss presentations common in women and older adults.
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