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A handy echocardiographic marker in acute pericarditis: echo probe sign

      Five percent of all causes of chest pain in the emergency service is related with acute pericarditis [
      • Tonini M
      • Melo DT
      • Fernandes F
      Acute pericarditis.
      ]. A clinical diagnosis of acute pericarditis can be made according to the 2015 European Society of Cardiology (ESC) guidelines [
      • Adler Y
      • Charron P
      • Imazio M
      • Badano L
      • Barón-Esquivias G
      • Bogaert J
      • et al.
      2015 ESC guidelines for the diagnosis and management of pericardial diseases: the Task Force for the Diagnosis and Management of Pericardial Diseases of the European Society of Cardiology (ESC) endorsed by: the European Association for Cardio-Thoracic Surgery (EACTS).
      ]. Because of ST-segment elevation or T inversion in electrocardiogram (ECG), acute pericarditis can be confused with acute myocardial infarction with ST elevation, early repolarization, and myocarditis [
      • Wang K
      • Asinger RW
      • Marriott HJL
      ST-segment elevation in conditions other than acute myocardial infarction.
      ,
      • Theleman KP
      • Kuiper JJ
      • Roberts WC
      Acute myocarditis (predominately lymphocytic) causing sudden death without heart failure.
      ,
      • Punja M
      • Mark DG
      • McCoy JV
      • Javan R
      • Pines JM
      • Brady W
      Electrocardiographic manifestations of cardiac infectious-inflammatory disorders.
      ,
      • Dec GW
      • Waldman H
      • Southern J
      • Fallon JT
      • Hutter AM
      • Palacios I.
      Viral myocarditis mimicking acute myocardial infarction.
      ]. Especially in young patients, differential diagnosis of acute pericarditis can be extremely difficult, and different practical methods or tools may sometimes be necessary in the differential diagnosis. This study suggests a handy echocardiographic tool in acute pericarditis at emergency admission in addition to the presence or absence pericardial effusion in echocardiography.
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