Abstract
Elevated cardiac troponin (cTn), with signs/symptoms of ischemia, is a key element in a diagnosis of myocardial infarction (MI). Underdiagnosis of MI in women has been attributed to atypical symptoms, inconsistent ECG findings, and less diagnostic testing. We sought to determine if there are sex differences in cTn testing following presentation to the emergency department (ED) with a chief complaint of ischemic chest pain (CP) and if presentation affects diagnostic assessment. All adults presenting to six hospital EDs in the Vancouver, Canada with a chief complaint of ischemic CP from 2009 to 2013 were included. The highest cTn level within 24 hours of ED presentation was used. CP was classified into cardiac- or respiratory dominant based on standard Canadian Emergency Department Triage and Acuity Scale coding. Chi-square testing was used to test for sex differences in CP categories and cTn testing within 24 hours. Logistic regression models were used to examine the association between sex, cTn testing, and CP categories. Of 27,063 patients with ischemic CP, cardiac presentation was more common in men than women, irrespective of age. Among cardiac CP, 24.7% of men were <50 years compared to 18.2% of women; however, more women (...Continue Reading
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