Stress Cardiac Magnetic Resonance Imaging in Intermediate-Risk Emergency Department Patients with Abnormal High-Sensitivity Troponin.

Background: Patients presenting to the emergency department (ED) with chest pain often have abnormal high-sensitivity troponin (hsTn). However, only about 5% have an acute coronary syndrome. We aimed to assess the safety, feasibility and utility of a clinical disposition protocol including outpatient observation with stress cardiac-magnetic-resonance (CMR) in intermediate-risk patients with abnormal hsTn of unclear etiology.