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Herzschrittmachertherapie + Elektrophysiologie

Erschienen in:

09.09.2022 | Original Contributions

High-resolution mapping as an alternative for exit block testing in the presence of entrance block after high-power short-duration pulmonary vein isolation

verfasst von: Dr. med. Sebastian Weyand, Dr. med. Matthias Beuter, Dr. med. David Heinzmann, Prof. Dr. med. Peter Seizer

Erschienen in: Herzschrittmachertherapie + Elektrophysiologie | Ausgabe 4/2022

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Abstract

Background

After pulmonary vein isolation (PVI) for atrial fibrillation (AF), it is common as an endpoint to demonstrate an exit block from the pulmonary veins (PVs) in addition to an entrance block into them. By using high-resolution mapping catheters, even very small signals can be detected.

Objectives

We investigated whether additional exit block testing is still necessary when using high-resolution mapping catheters after ablation in high-power short-duration (HPSD) techniques.

Materials and methods

Overall, 114 patients with AF (average age, 65.14 ± 11.3 years; 65.8% male) undergoing radiofrequency PVI were included in the study. Ablation was performed with the HPSD technique using a fixed protocol for energy delivery of 50 W (contact force 3–20 g). Entrance and exit block were tested with a high-resolution mapping catheter. Isolation of the PVs was achieved in all patients.

Results

Capture of local PV tissue was demonstrated in all patients after PVI and exit block was present in all patients after entrance block was detected using a high-resolution mapping catheter.

Conclusion

Exit block testing in addition to the demonstration of an entrance block as an endpoint of PVI seems to have no additional benefit and might no longer be necessary when a high-resolution mapping catheter is used in HPSD ablation for PVI of AF.

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Titel: High-resolution mapping as an alternative for exit block testing in the presence of entrance block after high-power short-duration pulmonary vein isolation
verfasst von: Dr. med. Sebastian Weyand
Dr. med. Matthias Beuter
Dr. med. David Heinzmann
Prof. Dr. med. Peter Seizer
Publikationsdatum: 09.09.2022
Verlag: Springer Medizin
Erschienen in: Herzschrittmachertherapie + Elektrophysiologie / Ausgabe 4/2022
Print ISSN: 0938-7412
Elektronische ISSN: 1435-1544
DOI: https://doi.org/10.1007/s00399-022-00895-3

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Background

Objectives

Materials and methods

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