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

Nikus, Kjell; Punkka, Olli; Barbosa-Barros, Raimundo; Daminello-Raimundo, Rodrigo; de Abreu, Luiz Carlos; Pérez-Riera, Andrés Ricardo (2022)
 
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Nikus, Kjell
Punkka, Olli
Barbosa-Barros, Raimundo
Daminello-Raimundo, Rodrigo
de Abreu, Luiz Carlos
Pérez-Riera, Andrés Ricardo
2022


doi:10.1016/j.jelectrocard.2022.08.011
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https://urn.fi/URN:NBN:fi:tuni-202209197136

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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.
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