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Evaluation of atrial electromechanical delay and left atrial phasic function in individuals with electrocardiographic early repolarization pattern
  • Murat Akcay,
  • Ufuk Yildirim
Murat Akcay
Ondokuz Mayıs University Faculty of Medicine
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Ufuk Yildirim
Ondokuz Mayis University Faculty of Medicine
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Abstract

Introduction: Atrial electromechanical delay (EMD) and left atrial (LA) phasic function have been demonstrated to be predictors for the development of atrial fibrillation (AF). In the present study, we aimed to evaluate atrial EMD and LA phasic function in individuals with electrocardiographic early repolarization pattern (ERP). Methods: Seventy consecutive individuals with ERP and 40 age- and gender-matched control subjects without ERP were compared in this cross-sectional study. Atrial electromechanical coupling (Pa’) was measured from lateral mitral annulus (Pa’lateral), septal mitral annulus (Pa’septal), and lateral tricuspid annulus (Pa’tricuspid) using tissue Doppler echocardiography to calculate intra- and inter-atrial EMD. LA maximal volume, LA minimal volume, and LA volume before atrial contraction were calculated using the biplane area-length method to assess LA phasic function. Results: There was no important difference between the groups in terms of Pa’lateral, Pa’septal, Pa’tricuspid, intra-left atrial EMD, intra-right atrial EMD, and inter-atrial EMD. LA total emptying volume and LA total emptying fraction indicating LA reservoir function, LA passive emptying volume and LA passive emptying fraction indicating LA conduit function, LA active emptying volume and LA active emptying fraction indicating LA pump function were comparable between the groups as well. Conclusion: Atrial EMD and LA phasic function are not affected in individuals with ERP. Evaluation of atrial EMD and LA phasic function does not provide much information for these subjects.