Left ventricular systolic function impairment in children after balloon valvuloplasty for congenital aortic stenosis assessed by 2D speckle tracking echocardiography

• Krzysztof Godlewski ,

  Contributed equally to this work with: Krzysztof Godlewski, Bożena Werner

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Validation, Writing – original draft, Writing – review & editing

  Affiliation Department of Paediatric Cardiology, University Clinic Centre of the Medical University of Warsaw, Warsaw, Poland

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• Paweł Dryżek ,

  Roles Data curation, Investigation

  ¶‡ These authors also contributed equally to this work.

  Affiliation Department of Cardiology, Polish Mother’s Memorial Hospital, Research Institute, Łódź, Poland

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• Elżbieta Sadurska ,

  Roles Data curation, Investigation

  ¶‡ These authors also contributed equally to this work.

  Affiliation Department of Paediatric Cardiology, Medical University of Lublin, Lublin, Poland

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• Bożena Werner

  Contributed equally to this work with: Krzysztof Godlewski, Bożena Werner

  Roles Conceptualization, Investigation, Supervision, Validation, Writing – review & editing

  * E-mail: bozena.werner@wum.edu.pl

  Affiliation Department of Paediatric Cardiology and General Paediatrics, Medical University of Warsaw, Warsaw, Poland

  https://orcid.org/0000-0002-6416-4106

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