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168851 Medicine

A 58-year-old man with no prior cardiac history presents to the emergency department with symptoms of retrosternal chest pain starting at rest and lasting 30 minutes. The pain radiates to the left arm and is associated with diaphoresis and dyspnea.On physical examination, his blood pressure is 150/90 mm Hg, pulse is 100/min, the heart sounds are normal, and the lungs are clear to auscultation. Which of the following is the next most appropriate investigation?

ACT scan - chest
BCXR
Ccardiac troponin
DECG
Medicine
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