High-density mapping of Koch's triangle during sinus rhythm and typical atrioventricular nodal re-entrant tachycardia, integrated with direct recording of atrio-ventricular node structure potential
© 2024 Wiley Periodicals LLC..
BACKGROUND: The mechanism of typical slow-fast atrioventricular nodal re-entrant tachycardia (AVNRT) and its anatomical and electrophysiological circuit inside the right atrium (RA) and Koch's Triangle (KT) are not well known.
OBJECTIVE: To identify the potentials of the compact AV node and inferior extensions and to perform accurate mapping of the RA and KT in sinus rhythm (SR) and during AVNRT, to define the tachycardia circuit.
METHODS: Consecutive patients with typical AVNRT were enrolled in 12 Italian centers and underwent mapping and ablation by means of a basket catheter with small electrode spacing for ultrahigh-density mapping and a modified signal-filtering toolset to record the potentials of the AV nodal structures.
RESULTS: Forty-five consecutive cases of successful ablation of typical slow-fast AVNRT were included. The mean SR cycle length (CL) was 784.1 ± 6 ms and the mean tachycardia CL was 361.2 ± 54 ms. The AV node potential had a significantly shorter duration and higher amplitude in sinus rhythm than during tachycardia (60 ± 40 ms vs. 160 ± 40 ms, p < .001 and 0.3 ± 0.2 mV vs. 0.09 ± 0.12 mV, p < .001, respectively). The nodal potential duration extension was 169.4 ± 31 ms, resulting in a time-window coverage of 47.6 ± 9%. The recording of AV nodal structure potentials enabled us to obtain 100% coverage of the tachycardia CL during slow-fast AVNRT.
CONCLUSION: Detailed recording of the potentials of nodal structures is possible by means of multipolar catheters for ultrahigh-density mapping, allowing 100% of the AVNRT CL to be covered. These results also have clinical implications for the ablation of right-septal and para-septal arrhythmias.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:35 |
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| Enthalten in: |
Journal of cardiovascular electrophysiology - 35(2024), 3 vom: 01. März, Seite 379-388 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Pandozi, Claudio [VerfasserIn] |
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| Links: |
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| Themen: |
AVNRT |
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| Anmerkungen: |
Date Completed 08.03.2024 Date Revised 08.03.2024 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1111/jce.16168 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 100 | 1 | |a Pandozi, Claudio |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a High-density mapping of Koch's triangle during sinus rhythm and typical atrioventricular nodal re-entrant tachycardia, integrated with direct recording of atrio-ventricular node structure potential |
| 264 | 1 | |c 2024 | |
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| 500 | |a Date Completed 08.03.2024 | ||
| 500 | |a Date Revised 08.03.2024 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a © 2024 Wiley Periodicals LLC. | ||
| 520 | |a BACKGROUND: The mechanism of typical slow-fast atrioventricular nodal re-entrant tachycardia (AVNRT) and its anatomical and electrophysiological circuit inside the right atrium (RA) and Koch's Triangle (KT) are not well known | ||
| 520 | |a OBJECTIVE: To identify the potentials of the compact AV node and inferior extensions and to perform accurate mapping of the RA and KT in sinus rhythm (SR) and during AVNRT, to define the tachycardia circuit | ||
| 520 | |a METHODS: Consecutive patients with typical AVNRT were enrolled in 12 Italian centers and underwent mapping and ablation by means of a basket catheter with small electrode spacing for ultrahigh-density mapping and a modified signal-filtering toolset to record the potentials of the AV nodal structures | ||
| 520 | |a RESULTS: Forty-five consecutive cases of successful ablation of typical slow-fast AVNRT were included. The mean SR cycle length (CL) was 784.1 ± 6 ms and the mean tachycardia CL was 361.2 ± 54 ms. The AV node potential had a significantly shorter duration and higher amplitude in sinus rhythm than during tachycardia (60 ± 40 ms vs. 160 ± 40 ms, p < .001 and 0.3 ± 0.2 mV vs. 0.09 ± 0.12 mV, p < .001, respectively). The nodal potential duration extension was 169.4 ± 31 ms, resulting in a time-window coverage of 47.6 ± 9%. The recording of AV nodal structure potentials enabled us to obtain 100% coverage of the tachycardia CL during slow-fast AVNRT | ||
| 520 | |a CONCLUSION: Detailed recording of the potentials of nodal structures is possible by means of multipolar catheters for ultrahigh-density mapping, allowing 100% of the AVNRT CL to be covered. These results also have clinical implications for the ablation of right-septal and para-septal arrhythmias | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a AVNRT | |
| 650 | 4 | |a Koch's triangle | |
| 650 | 4 | |a high-density mapping system | |
| 650 | 4 | |a rhythmia | |
| 650 | 4 | |a slow pathway | |
| 700 | 1 | |a Botto, Giovanni Luca |e verfasserin |4 aut | |
| 700 | 1 | |a Loricchio, Maria Luisa |e verfasserin |4 aut | |
| 700 | 1 | |a D'Ammando, Matteo |e verfasserin |4 aut | |
| 700 | 1 | |a Lavalle, Carlo |e verfasserin |4 aut | |
| 700 | 1 | |a Del Giorno, Giuseppe |e verfasserin |4 aut | |
| 700 | 1 | |a Matteucci, Andrea |e verfasserin |4 aut | |
| 700 | 1 | |a Mariani, Marco Valerio |e verfasserin |4 aut | |
| 700 | 1 | |a Nicolis, Daniele |e verfasserin |4 aut | |
| 700 | 1 | |a Segreti, Luca |e verfasserin |4 aut | |
| 700 | 1 | |a Papa, Andrea Antonio |e verfasserin |4 aut | |
| 700 | 1 | |a Casale, Maria Carla |e verfasserin |4 aut | |
| 700 | 1 | |a Galeazzi, Marco |e verfasserin |4 aut | |
| 700 | 1 | |a Russo, Maurizio |e verfasserin |4 aut | |
| 700 | 1 | |a Di Belardino, Natale |e verfasserin |4 aut | |
| 700 | 1 | |a Pelargonio, Gemma |e verfasserin |4 aut | |
| 700 | 1 | |a Centurion Aznaran, Carlos |e verfasserin |4 aut | |
| 700 | 1 | |a Malacrida, Maurizio |e verfasserin |4 aut | |
| 700 | 1 | |a Maddaluno, Francesco |e verfasserin |4 aut | |
| 700 | 1 | |a Treglia, Simona |e verfasserin |4 aut | |
| 700 | 1 | |a Piccolo, Francesco |e verfasserin |4 aut | |
| 700 | 1 | |a Colivicchi, Furio |e verfasserin |4 aut | |
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