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[Comment] Myocardial infarction: rapid ruling out in the emergency room

Patients with symptoms of possible acute coronary syndrome make up a large proportion of people who present to emergency departments, where they undergo lengthy, intensive, and costly assessments.1,2 Yet few are finally diagnosed with an acute coronary syndrome. Improvements in methods to exclude acute coronary syndrome are needed to reliably reassure and safely discharge low-risk patients who can then proceed to further investigations as outpatients. High-sensitivity cardiac troponin assays are reliable and have low thresholds of detection.

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