JACC: Case Reports (Sep 2020)

Alternating QRS Morphologies and PR Intervals After Transcatheter Aortic Valve Replacement

  • Vivek T. Kulkarni, MD, MHS, EdM,
  • Naga Venkata K. Pothineni, MD,
  • Ramanan Kumareswaran, MD

Journal volume & issue
Vol. 2, no. 11
pp. 1742 – 1744

Abstract

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Alternating bundle branch block pattern on electrocardiogram (ECG) is a concerning finding with important prognostic implications. This ECG challenge explores the electrophysiological mechanism of a case of alternating bundle branch block with alternating PR intervals. (Level of Difficulty: Beginner.)

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