Defining left bundle branch block according to the new 2021 european society of cardiology criteria

HIGHLIGHTS

• who: Neth Heart J ( et al. from the examination at Ghent University Hospital from October , through September LBBB was defined according to conventional criteria (QRS duration u2265 , ms, QS or rS in lead , and absence of Q waves in leads , and, ). Electrocardiograms were digitally stored in MUSE (GE Healthcare, USA) and continuous electrocardiographic characteristics were digitally analysed by the Marquette SL algorithm (GE Healthcare, USA). Septal flash on echocardiography was required to substantiate the presence of a true electromechanical LBBB substrate [12, ]. CRT was implanted according to contemporary ESC guidelines [9, ]. The study was approved by the . . .
  

   

  

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