The Durability of Atrial Fibrillation Ablation Using an Oesophageal Temperature Cut-Off of 38 °C

Takehiro Kimura, Nobuhiro Nishiyama, Masachika Negishi, Ako Nishiyama, Takako Takazawa, Taishi Fujisawa, Kazuaki Nakajima, Shin Kashimura, Akira Kunitomi, Yoshinori Katsumata, Takahiko Nishiyama, Yoshiyasu Aizawa, Keiichi Fukuda, Seiji Takatsuki

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Background: A lower cut-off of the oesophageal temperature (ET) during catheter ablation of atrial fibrillation (AF) should be safer, but its durability may become in question. We evaluated an ET cut-off of 38 °C with an output of 25 W on the posterior wall. Methods: In 636 consecutive patients (age: 60 ± 10 years, male: 542, paroxysmal AF: 405, CHADS2 score: 0.7 ± 0.9), an ET probe was utilised in 303 patients (259 pulmonary vein isolations [PVIs] and 44 simultaneous isolations of the posterior wall and all PVs box isolations [BOXIs]). When the ET increased to >38 °C, the radiofrequency delivery was switched off and the ablation point was tagged as an “EsoTag” by the CARTO™ system (Biosense Webster, Irvine, CA, USA). We analysed the characteristics of the ablation lesions at the EsoTags with respect to the dormant conduction, gaps in the redo-session, and ablation outcome. Results: EsoTags were identified in 94.6% of the left PVIs and all BOXIs, and dormant conduction at the EsoTags was identified in 12.0% and 6.8%, respectively. In 10,796 ablation points, the ablation at the EsoTags that were associated with dormant conduction had a significantly shorter duration, smaller force-time integral, and smaller Δimpedance. The duration of an ET of >38 °C was significantly and positively correlated with the body mass index and negatively with the left atrial appendage flow velocity. During the redo-sessions in a 10.5 ± 6.0 months of follow-up (PVI: 14.7%, BOXI: 11.4%), reconnections at the EsoTags with dormant conduction were observed only in two patients after the PVI. The AF survival rate did not significantly differ in the presence of dormant conduction at the EsoTags (83.1% vs. 75.0%, p = 0.696). There were no patients hospitalised for gastroparesis. Conclusions: Atrial fibrillation ablation utilising an oesophageal temperature cut-off of 38 °C might be safe and durable.

Original languageEnglish
JournalHeart Lung and Circulation
DOIs
Publication statusAccepted/In press - 2018 Jan 1

Fingerprint

Pulmonary Veins
Atrial Fibrillation
Temperature
Gastroparesis
Atrial Appendage
Catheter Ablation
Electric Impedance
Body Mass Index
Survival Rate

Keywords

  • Atrial fibrillation
  • Catheter ablation
  • Dormant conduction
  • Follow-up study
  • Gastroparesis
  • Ooesophageal temperature

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine
  • Cardiology and Cardiovascular Medicine

Cite this

The Durability of Atrial Fibrillation Ablation Using an Oesophageal Temperature Cut-Off of 38 °C. / Kimura, Takehiro; Nishiyama, Nobuhiro; Negishi, Masachika; Nishiyama, Ako; Takazawa, Takako; Fujisawa, Taishi; Nakajima, Kazuaki; Kashimura, Shin; Kunitomi, Akira; Katsumata, Yoshinori; Nishiyama, Takahiko; Aizawa, Yoshiyasu; Fukuda, Keiichi; Takatsuki, Seiji.

In: Heart Lung and Circulation, 01.01.2018.

Research output: Contribution to journalArticle

Kimura, T, Nishiyama, N, Negishi, M, Nishiyama, A, Takazawa, T, Fujisawa, T, Nakajima, K, Kashimura, S, Kunitomi, A, Katsumata, Y, Nishiyama, T, Aizawa, Y, Fukuda, K & Takatsuki, S 2018, 'The Durability of Atrial Fibrillation Ablation Using an Oesophageal Temperature Cut-Off of 38 °C', Heart Lung and Circulation. https://doi.org/10.1016/j.hlc.2018.05.197
Kimura, Takehiro ; Nishiyama, Nobuhiro ; Negishi, Masachika ; Nishiyama, Ako ; Takazawa, Takako ; Fujisawa, Taishi ; Nakajima, Kazuaki ; Kashimura, Shin ; Kunitomi, Akira ; Katsumata, Yoshinori ; Nishiyama, Takahiko ; Aizawa, Yoshiyasu ; Fukuda, Keiichi ; Takatsuki, Seiji. / The Durability of Atrial Fibrillation Ablation Using an Oesophageal Temperature Cut-Off of 38 °C. In: Heart Lung and Circulation. 2018.
@article{4f01dc0885c1411dbd1ee46102a5d9d6,
title = "The Durability of Atrial Fibrillation Ablation Using an Oesophageal Temperature Cut-Off of 38 °C",
abstract = "Background: A lower cut-off of the oesophageal temperature (ET) during catheter ablation of atrial fibrillation (AF) should be safer, but its durability may become in question. We evaluated an ET cut-off of 38 °C with an output of 25 W on the posterior wall. Methods: In 636 consecutive patients (age: 60 ± 10 years, male: 542, paroxysmal AF: 405, CHADS2 score: 0.7 ± 0.9), an ET probe was utilised in 303 patients (259 pulmonary vein isolations [PVIs] and 44 simultaneous isolations of the posterior wall and all PVs box isolations [BOXIs]). When the ET increased to >38 °C, the radiofrequency delivery was switched off and the ablation point was tagged as an “EsoTag” by the CARTO™ system (Biosense Webster, Irvine, CA, USA). We analysed the characteristics of the ablation lesions at the EsoTags with respect to the dormant conduction, gaps in the redo-session, and ablation outcome. Results: EsoTags were identified in 94.6{\%} of the left PVIs and all BOXIs, and dormant conduction at the EsoTags was identified in 12.0{\%} and 6.8{\%}, respectively. In 10,796 ablation points, the ablation at the EsoTags that were associated with dormant conduction had a significantly shorter duration, smaller force-time integral, and smaller Δimpedance. The duration of an ET of >38 °C was significantly and positively correlated with the body mass index and negatively with the left atrial appendage flow velocity. During the redo-sessions in a 10.5 ± 6.0 months of follow-up (PVI: 14.7{\%}, BOXI: 11.4{\%}), reconnections at the EsoTags with dormant conduction were observed only in two patients after the PVI. The AF survival rate did not significantly differ in the presence of dormant conduction at the EsoTags (83.1{\%} vs. 75.0{\%}, p = 0.696). There were no patients hospitalised for gastroparesis. Conclusions: Atrial fibrillation ablation utilising an oesophageal temperature cut-off of 38 °C might be safe and durable.",
keywords = "Atrial fibrillation, Catheter ablation, Dormant conduction, Follow-up study, Gastroparesis, Ooesophageal temperature",
author = "Takehiro Kimura and Nobuhiro Nishiyama and Masachika Negishi and Ako Nishiyama and Takako Takazawa and Taishi Fujisawa and Kazuaki Nakajima and Shin Kashimura and Akira Kunitomi and Yoshinori Katsumata and Takahiko Nishiyama and Yoshiyasu Aizawa and Keiichi Fukuda and Seiji Takatsuki",
year = "2018",
month = "1",
day = "1",
doi = "10.1016/j.hlc.2018.05.197",
language = "English",
journal = "Heart Lung and Circulation",
issn = "1443-9506",
publisher = "Wiley-Blackwell",

}

TY - JOUR

T1 - The Durability of Atrial Fibrillation Ablation Using an Oesophageal Temperature Cut-Off of 38 °C

AU - Kimura, Takehiro

AU - Nishiyama, Nobuhiro

AU - Negishi, Masachika

AU - Nishiyama, Ako

AU - Takazawa, Takako

AU - Fujisawa, Taishi

AU - Nakajima, Kazuaki

AU - Kashimura, Shin

AU - Kunitomi, Akira

AU - Katsumata, Yoshinori

AU - Nishiyama, Takahiko

AU - Aizawa, Yoshiyasu

AU - Fukuda, Keiichi

AU - Takatsuki, Seiji

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Background: A lower cut-off of the oesophageal temperature (ET) during catheter ablation of atrial fibrillation (AF) should be safer, but its durability may become in question. We evaluated an ET cut-off of 38 °C with an output of 25 W on the posterior wall. Methods: In 636 consecutive patients (age: 60 ± 10 years, male: 542, paroxysmal AF: 405, CHADS2 score: 0.7 ± 0.9), an ET probe was utilised in 303 patients (259 pulmonary vein isolations [PVIs] and 44 simultaneous isolations of the posterior wall and all PVs box isolations [BOXIs]). When the ET increased to >38 °C, the radiofrequency delivery was switched off and the ablation point was tagged as an “EsoTag” by the CARTO™ system (Biosense Webster, Irvine, CA, USA). We analysed the characteristics of the ablation lesions at the EsoTags with respect to the dormant conduction, gaps in the redo-session, and ablation outcome. Results: EsoTags were identified in 94.6% of the left PVIs and all BOXIs, and dormant conduction at the EsoTags was identified in 12.0% and 6.8%, respectively. In 10,796 ablation points, the ablation at the EsoTags that were associated with dormant conduction had a significantly shorter duration, smaller force-time integral, and smaller Δimpedance. The duration of an ET of >38 °C was significantly and positively correlated with the body mass index and negatively with the left atrial appendage flow velocity. During the redo-sessions in a 10.5 ± 6.0 months of follow-up (PVI: 14.7%, BOXI: 11.4%), reconnections at the EsoTags with dormant conduction were observed only in two patients after the PVI. The AF survival rate did not significantly differ in the presence of dormant conduction at the EsoTags (83.1% vs. 75.0%, p = 0.696). There were no patients hospitalised for gastroparesis. Conclusions: Atrial fibrillation ablation utilising an oesophageal temperature cut-off of 38 °C might be safe and durable.

AB - Background: A lower cut-off of the oesophageal temperature (ET) during catheter ablation of atrial fibrillation (AF) should be safer, but its durability may become in question. We evaluated an ET cut-off of 38 °C with an output of 25 W on the posterior wall. Methods: In 636 consecutive patients (age: 60 ± 10 years, male: 542, paroxysmal AF: 405, CHADS2 score: 0.7 ± 0.9), an ET probe was utilised in 303 patients (259 pulmonary vein isolations [PVIs] and 44 simultaneous isolations of the posterior wall and all PVs box isolations [BOXIs]). When the ET increased to >38 °C, the radiofrequency delivery was switched off and the ablation point was tagged as an “EsoTag” by the CARTO™ system (Biosense Webster, Irvine, CA, USA). We analysed the characteristics of the ablation lesions at the EsoTags with respect to the dormant conduction, gaps in the redo-session, and ablation outcome. Results: EsoTags were identified in 94.6% of the left PVIs and all BOXIs, and dormant conduction at the EsoTags was identified in 12.0% and 6.8%, respectively. In 10,796 ablation points, the ablation at the EsoTags that were associated with dormant conduction had a significantly shorter duration, smaller force-time integral, and smaller Δimpedance. The duration of an ET of >38 °C was significantly and positively correlated with the body mass index and negatively with the left atrial appendage flow velocity. During the redo-sessions in a 10.5 ± 6.0 months of follow-up (PVI: 14.7%, BOXI: 11.4%), reconnections at the EsoTags with dormant conduction were observed only in two patients after the PVI. The AF survival rate did not significantly differ in the presence of dormant conduction at the EsoTags (83.1% vs. 75.0%, p = 0.696). There were no patients hospitalised for gastroparesis. Conclusions: Atrial fibrillation ablation utilising an oesophageal temperature cut-off of 38 °C might be safe and durable.

KW - Atrial fibrillation

KW - Catheter ablation

KW - Dormant conduction

KW - Follow-up study

KW - Gastroparesis

KW - Ooesophageal temperature

UR - http://www.scopus.com/inward/record.url?scp=85049074032&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85049074032&partnerID=8YFLogxK

U2 - 10.1016/j.hlc.2018.05.197

DO - 10.1016/j.hlc.2018.05.197

M3 - Article

C2 - 31178023

AN - SCOPUS:85049074032

JO - Heart Lung and Circulation

JF - Heart Lung and Circulation

SN - 1443-9506

ER -