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J Atr Fibrillation. 2009 Feb 01;1(5):113. doi: 10.4022/jafib.113. eCollection 2009.

QT Prolongation Following Ectopic Beats: Initial Data Regarding The Upper Limit Of Normal With Possible Implications For Antiarrhythmic Therapy And Concealed (Unexpressed) Long QT.

Journal of atrial fibrillation

Alyssa J Reiffel, James A Reiffel

Affiliations

  1. The Division of Cardiology, Department of Medicine,Columbia University Medical Center,New York, New York.

PMID: 28496607 PMCID: PMC5395038 DOI: 10.4022/jafib.113

Abstract

CONCLUSIONS: The QT interval in normal subjects may prolong following premature complexes but not to a value in excess of 480 ms.

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