What is the prevalence of pulmonary embolism among patients with acute exacerbations of chronic obstructive pulmonary disease?

BEEM Bottom Line

Why is this study important?

Acute exacerbation of chronic obstructive pulmonary disease (AE-COPD) is a common emergency department (ED) presentation. While pulmonary embolism (PE) should be considered in the differential of all patients with acute dyspnea, computerized tomography (CT) scanning for PE as a cause of the exacerbation is not common practice in this population and is not without risks, including radiation exposure.[1]

Which, if any, threats to validity are most likely to have an impact on the results and how?

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