Miocardite ao Ecocardiograma



Echocardiography is currently recommended in the initial diagnostic evaluation of all patients with suspected myocarditis. Several studies have specifically evaluated the role of transthoracic echocardiography for diagnosing myocarditis.88,89Pinamonti et al88 retrospectively analyzed echocardiographic findings among 42 patients with biopsy-proven myocarditis. Left ventricular dysfunction was commonly observed (69%), but left ventricular cavity enlargement was frequently minimal or absent, consistent with other forms of acute dilated cardiomyopathy. Right ventricular dysfunction was present in only 23% of this cohort. Not surprisingly, patients who presented with chest pain or heart block rather than heart failure almost always had preserved ventricular size and function. Segmental wall motion abnormalities were observed in 64% of patients and included hypokinetic, akinetic, or frankly dyskinetic regions. Reversible left ventricular hypertrophy was noted in 15% of patients and typically resolved over several months. Thus, echocardiographic findings can be varied but relatively nonspecific. Serial studies have been shown to be useful in assessing the response to treatment of several forms of myocarditis. Resolution of marked concentric left ventricular hypertrophy in eosinophilic myocarditis after corticosteroid treatment has been reported.90


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