Brief Report

Left bundle branch block (LBBB) masks changes due to hyperkalemia: A myth†

  1. Anil Kumar MD, MRCP (UK)1,*,
  2. Neel Shah MD2,
  3. Stephen Jesmajian MD2

Article first published online: 8 APR 2010

DOI: 10.1002/jhm.625

Issue

Journal of Hospital Medicine

Journal of Hospital Medicine

Volume 5, Issue 4, pages 226–227, April 2010

Additional Information

How to Cite

Kumar, A., Shah, N. and Jesmajian, S. (2010), Left bundle branch block (LBBB) masks changes due to hyperkalemia: A myth. Journal of Hospital Medicine, 5: 226–227. doi: 10.1002/jhm.625

Author Information

  1. 1

    Cardiology, Geisinger Medical Center, Danville, PA

  2. 2

    Department of Internal Medicine, New York Medical College, Sound Shore Medical Center, New Rochelle, New York

*50 Guion Pl., Apt. 5C, New Rochelle, NY 10801

  1. †

    Disclosure: Nothing to report.

Publication History

  1. Issue published online: 8 APR 2010
  2. Article first published online: 8 APR 2010
  3. Manuscript Accepted: 12 SEP 2009
  4. Manuscript Revised: 28 MAY 2009
  5. Manuscript Received: 17 JAN 2009

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Keywords:

  • diagnostic decision making;
  • ECG;
  • hyperkalemia;
  • LBBB

Abstract

Left bundle branch block masks ischemic changes but not those due to electrolyte imbalance. Peaking of T waves, prolongation of PR interval, diminution/absence of P wave, and widening of QRS complex can still be appreciated if one carefully compares the baseline ECG to the presenting ECG. Journal of Hospital Medicine 2010;5:226–227. © 2010 Society of Hospital Medicine.

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