2023
DOI: 10.1136/heartjnl-2023-322878
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QRS complex and T wave planarity for the efficacy prediction of automatic implantable defibrillators

Katerina Hnatkova,
Irena Andršová,
Tomáš Novotný
et al.

Abstract: ObjectiveTo test the hypothesis that in recipients of primary prophylactic implantable cardioverter-defibrillators (ICDs), the non-planarity of ECG vector loops predicts (a) deaths despite ICD protection and (b) appropriate ICD shocks.MethodsDigital pre-implant ECGs were collected in 1948 ICD recipients: 21.4% females, median age 65 years, 61.5% ischaemic heart disease (IHD). QRS and T wave three-dimensional loops were constructed using singular value decomposition that allowed to measure the vector loop plana… Show more

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