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Electrocardiographic criteria of epicardial ventricular tachycardia with anterior origin

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Abstract

Background

ECG criteria for identifying an epicardial origin of ventricular tachycardia (VT) have mainly been described for VTs with basal-superior and lateral origin.

Objective

The aim of this study was to determine ECG criteria for epicardial VTs with anterior origin as a guide for trans-pericardial ablation.

Results

Among 22 patients undergoing successful ablation of VTs from the anterior myocardial wall, 14 patients underwent endocardial ablation and 8 patients underwent epicardial ablation. VTs with anterior origin ablated epicardially had widened QS complexes in precordial leads with staircase-shaped notching and slowing of the descent to the nadir of S. In comparison, endocardial VTs with anterior origin usually had narrower QS complexes with a smooth and fast downstroke to the nadir of S. The duration of the negative pseudodelta wave was longer in epicardial VTs (55 ± 12 ms) compared to endocardial VTs (22 ± 12 ms). The interval “time to the nadir of S” in patients with anterior VT origin was longer in epicardial VTs (121 ± 16 ms) than in endocardial VTs (80 ± 22 ms). The QRS duration was also longer in patients with epicardial origin (212 ± 19 ms) than with endocardial VT origin (166 ± 30 ms).

Conclusions

Epicardial origin of VTs arising from the anterior myocardial wall produces a slowing, widening and staircase-shaped notching in the initial VT–QS complex. Thus, the morphology of the initial part of the QS complex in precordial leads can be used as a guide for trans-pericardial ablation of VTs with anterior origin.

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Authors and Affiliations

  1. Medizinische Klinik 1, HELIOS Klinikum München-West, Akademisches Lehrkrankenhaus der Universität München, Steinerweg 5, 81241, Munich, Germany

    Christopher Reithmann, Michael Fiek, Zeinab Aynur & Michael Ulbrich

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  1. Christopher Reithmann
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  2. Michael Fiek
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  3. Zeinab Aynur
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  4. Michael Ulbrich
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Correspondence to Christopher Reithmann.

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Reithmann, C., Fiek, M., Aynur, Z. et al. Electrocardiographic criteria of epicardial ventricular tachycardia with anterior origin. Clin Res Cardiol 108, 254–263 (2019). https://doi.org/10.1007/s00392-018-1349-5

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  • DOI: https://doi.org/10.1007/s00392-018-1349-5

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