Northwest axis in the electrocardiogram — A sign of right ventricular remodeling in tetralogy of Fallot: A case report

Kjell Nikus, Olli Punkka, Raimundo Barbosa-Barros, Rodrigo Daminello-Raimundo, Luiz Carlos de Abreu, Andrés Ricardo Pérez-Riera

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Abstract

The typical ECG changes in tetralogy of Fallot are right axis deviation, large R waves in the anterior precordial leads and large S waves in the lateral precordial leads. We present a patient with extreme deviation of the frontal QRS axis between −90° and ± 180°. The child underwent open heart surgery twice before one year of age and a third time at nine years of age. The axis change persisted into adulthood.

Original languageEnglish
Pages (from-to)101-103
Number of pages3
JournalJournal of Electrocardiology
Volume74
Early online date6 Sept 2022
DOIs
Publication statusPublished - 2022
Publication typeA1 Journal article-refereed

Keywords

  • Northwest axis
  • QRS axis
  • Tetralogy of Fallot

Publication forum classification

  • Publication forum level 1

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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