El rol de la resonancia magnética cardíaca en el diagnóstico diferencial entre miocarditis aguda e infarto agudo de miocardio con elevación del segmento ST / Cardiac magnetic resonance imaging for the diagnosis of acute myocarditis mimicking a myocardial infarction
Rev. méd. Chile
; 149(10): 1399-1411, oct. 2021. tab, ilus
Article
em Es
| LILACS
| ID: biblio-1389379
Biblioteca responsável:
CL126.2
ABSTRACT
BACKGROUND:
Acute myocarditis frequently mimics an acute myocardial infarction, and its diagnosis is a clinical challenge.AIM:
To describe the characteristics of cardiac magnetic resonance imaging in patients with acute myocarditis hospitalized with a diagnosis of ST-segment elevation myocardial infarction. PATIENTS ANDMETHODS:
Twenty-four patients aged 33 ± 11 years (21 men) with a definitive diagnosis of acute myocarditis hospitalized with a presumptive diagnosis of ST-segment elevation myocardial infarction, in whom a coronary angiogram excluded significant atherosclerotic coronary lesions, were included. Cardiac magnetic resonance imaging with cine-resonance images was performed to assess global and regional ventricular function, and to study myocardial tissue characteristics. T2-STIR sequences were used for the assessment of oedema and late gadolinium enhancement for necrosis/fibrosis.RESULTS:
Patients had high levels of total CK, CK-MB, troponin I, brain natriuretic peptide and C-reactive protein. Cardiac magnetic resonance imaging revealed myocardial edema and late gadolinium enhancement was identified in all patients. The edema was transmural in 86% and subepicardial in 14%. Enhancement was subepicardial in 74% of patients and intramural in 26%. It was located in the inferior and lateral walls of the left ventricle in 93%, without affecting the endocardium. In all patients, two of three Lake Louise criteria were met, and an acute myocarditis was diagnosed.CONCLUSIONS:
Cardiac magnetic resonance imaging is the diagnostic method of choice for diagnosing acute myocarditis when it mimics an acute myocardial infarction.Palavras-chave
Texto completo:
1
Base de dados:
LILACS
Assunto principal:
Infarto do Miocárdio
/
Miocardite
Idioma:
Es
Ano de publicação:
2021
Tipo de documento:
Article