fig3

Figure 3. Diagnostic algorithm for FM^[3]. Electrocardiography (ECG), echocardiography, cardiac troponin I (cTnI), N-terminal pro-B-type natriuretic peptide (NT-proBNP), and blood cytokine testing should be performed immediately; coronary angiography (CAG) is required to rule out coronary artery disease. Left ventriculography may be used to exclude stress cardiomyopathy, and chest computed tomography (CT) to rule out septic cardiomyopathy due to severe infection, when clinically indicated. Cardiac magnetic resonance imaging (CMR) should be scheduled at an appropriate time based on the patient’s clinical status. EMB: Endomyocardial biopsy; FM: fulminant myocarditis.