Elien B Engels1, Salih Alshehri1, Caroline J M van Deursen2, Liliane Wecke3, Lennart Bergfeldt4, Kevin Vernooy5, Frits W Prinzen6. 1. Department of Physiology, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, the Netherlands. 2. Department of Physiology, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, the Netherlands; Department of Cardiology, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, the Netherlands. 3. Department of Cardiology, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden. 4. Sahlgrenska Academy, Department of Molecular and Clinical Medicine/Cardiology, University of Gothenburg, Sweden. 5. Department of Cardiology, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, the Netherlands. 6. Department of Physiology, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, the Netherlands. Electronic address: frits.prinzen@maastrichtuniversity.nl.
Abstract
BACKGROUND: The use of vectorcardiography (VCG) has regained interest, however, original Frank-VCG equipment is rare. This study compares the measured VCGs with those synthesized from the 12-lead electrocardiogram (ECG) in patients with heart failure and conduction abnormalities, who are candidate for cardiac resynchronization therapy (CRT). METHODS: In 92 CRT candidates, Frank-VCG and 12-lead ECG were recorded before CRT implantation. The ECG was converted to a VCG using the Kors method (Kors-VCG) and the two methods were compared using correlation and Bland-Altman analyses. RESULTS: Variables calculated from the Frank- and Kors-VCG showed correlation coefficients between 0.77 and 0.90. There was a significant but small underestimation by the Kors-VCG method, relative bias ranging from -1.9% ± 4.6% (QRS-T angle) to -9.4% ± 20.8% (T area). CONCLUSION: The present study shows that it is justified to use Kors-VCG calculations for VCG analysis, which enables retrospective VCG analysis of previously recorded ECGs in studies related to CRT.
BACKGROUND: The use of vectorcardiography (VCG) has regained interest, however, original Frank-VCG equipment is rare. This study compares the measured VCGs with those synthesized from the 12-lead electrocardiogram (ECG) in patients with heart failure and conduction abnormalities, who are candidate for cardiac resynchronization therapy (CRT). METHODS: In 92 CRT candidates, Frank-VCG and 12-lead ECG were recorded before CRT implantation. The ECG was converted to a VCG using the Kors method (Kors-VCG) and the two methods were compared using correlation and Bland-Altman analyses. RESULTS: Variables calculated from the Frank- and Kors-VCG showed correlation coefficients between 0.77 and 0.90. There was a significant but small underestimation by the Kors-VCG method, relative bias ranging from -1.9% ± 4.6% (QRS-T angle) to -9.4% ± 20.8% (T area). CONCLUSION: The present study shows that it is justified to use Kors-VCG calculations for VCG analysis, which enables retrospective VCG analysis of previously recorded ECGs in studies related to CRT.
Authors: Robbert Zusterzeel; Kimberly A Selzman; William E Sanders; Kathryn M O'Callaghan; Daniel A Caños; Kevin Vernooy; Frits W Prinzen; Anton P M Gorgels; David G Strauss Journal: J Cardiovasc Transl Res Date: 2015-12-10 Impact factor: 4.132
Authors: L I B Heckman; J G L M Luermans; M Jastrzębski; B Weijs; A M W Van Stipdonk; S Westra; D den Uijl; D Linz; M Mafi-Rad; F W Prinzen; K Vernooy Journal: Neth Heart J Date: 2022-04-05 Impact factor: 2.854
Authors: Elien B Engels; Masih Mafi-Rad; Antonius M W van Stipdonk; Kevin Vernooy; Frits W Prinzen Journal: J Cardiovasc Transl Res Date: 2016-05-26 Impact factor: 4.132
Authors: Mohammed A Ghossein; Antonius Mw van Stipdonk; Frits W Prinzen; Kevin Vernooy Journal: J Geriatr Cardiol Date: 2022-01-28 Impact factor: 3.327