
Chest Pain
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Given a patient with undefined chest pain, take an adequate history to make a specific diagnosis (e.g., determine risk factors, whether the pain is pleuritic or sharp, pressure, etc.).
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Given a clinical scenario suggestive of life-threatening conditions (e.g., pulmonary embolism, tamponade, dissection, pneumothorax), begin timely treatment (before the diagnosis is confirmed, while doing an appropriate work-up).
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In a patient with unexplained chest pain, rule out ischemic heart disease.* (*See also the key features on ischemic heart disease)
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Given an appropriate history of chest pain suggestive of herpes zoster infection, hiatal hernia, reflux, esophageal spasm, infections, or peptic ulcer disease:
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Propose the diagnosis.
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Do an appropriate work-up/follow-up to confirm the suspected diagnosis.
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Given a suspected diagnosis of pulmonary embolism:
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Do not rule out the diagnosis solely on the basis of a test with low sensitivity and specificity
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Begin appropriate treatment immediately
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Chest Pain DDx
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Cardiac
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Acute Coronary Syndrome (ACS)
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Myocarditis
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Pericarditis
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Pleuritic chest pain, decreased on leaning forward
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Diffuse ST elevation, PR depression, pericardial friction rub
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Treatment
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Supportive, NSAIDs, steroids
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Pulmonary
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Tension pneumothorax (see trauma)
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Acute chest syndrome (sickle cell)
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Thoracic aortic dissection
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Sudden, severe pain radiating to back
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Widened mediastinum on CXR, >20mmHg difference in BP on left vs. right
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Treatment
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Decrease contractility and BP (target sBP <120)
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ABC, surgery/ICU
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GI
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Boerhaave's sydrome (esophageal rupture)
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Treatment
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NPO
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IV Abx, IV PPI, Endoscopy/surgical repair
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Chest wall
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Costochondritis
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MSK
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Herpes Zoster
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Psychogenic (Anxiety)
Outpatient Management
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Refer to emergency if <24h for monitoring of worsening symptoms and potential complications
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1.5% of primary care office visits for chest pain will have an Acute Coronary Syndrome
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Consider using Marburg Heart Score (MHS) prediction rule to aid in out-patient primary care decision-making
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Assign one point for each of the following
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Age/sex: men 55 years or older, women 65 years or older
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Known clinical vascular disease (CAD, occlusive vascular disease, cerebrovascular disease)
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Pain worse with exercise
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Pain not elicited with palpation
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Patient assumes pain is of cardiac origin
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0-1 points predicts a 1% CAD risk
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0-2 points predicts a 3% CAD risk
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May consider investigations (EKG +/- STAT Troponin) in office-setting in only certain cases
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Resolved symptoms with ACS symptoms >24h prior to presentation
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Atypical chest pain with very low likelihood of ACS (and want to "rule out" ACS), consider repeat 3h after presentation if symptoms <6h
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References:
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AAFP 2017. https://www-aafp-org.proxy3.library.mcgill.ca/afp/2017/0901/p306.html
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AAFP 2013. https://www.aafp.org/afp/2013/0201/p177.html
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BrJ Gen Pract 2015. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4617269/
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CMAJ 2010. http://www.cmaj.ca/content/182/12/1295