Minimal energy requirement for external cardioversion and catheter ablation for long-standing persistent atrial fibrillation

In Soo Kim, Tae Hoon Kim, Pil Sung Yang, Jae Sun Uhm, Boyoung Joung, Moon Hyoung Lee, huinam pak

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Background The minimal energy requirement (Emin) for electrical cardioversion (ECV) reflects the atrial substrate in patients with long-standing persistent atrial fibrillation (L-PeAF), but the relationship between EminECV and radiofrequency catheter ablation (RFCA) has not yet been studied. We hypothesize that EminECV before ablation (EminECVpre) predicts clinical outcome of RFCA, and that catheter ablation reduces EminECVpost. Methods We included 172 patients with L-PeAF who underwent RFCA (79.7% males, 57.5 ± 10.0 years) due to AF recurrence after ECV with an anti-arrhythmic drug (AAD). ECV began with 70 J (patch electrode on anterior–posterior position) and was serially increased to 100, 150, 200, and 250 J until sinus rhythm was achieved, at an average 5.0 ± 5.6 months before RFCA. After RFCA, ECV was repeated (ECVpost) in 42 patients with recurrent AF that was not controlled by AAD. Results (1) During 34.8 ± 20.0 months of follow-up after RFCA, 103 patients (59.9%) showed clinical recurrence of AF after RFCA. EminECVpre was significantly higher in patients with recurrent AF (129.0 ± 58.6 J) than those who remained in sinus rhythm (94.2 ± 39.4 J, p < 0.001). (2) EminECVpre ≥150 J (HR = 3.31, 95% CI 2.18–5.03, p < 0.001) and left atrial volume index (HR = 1.02, 95% CI 1.00–1.04, p = 0.021) were significantly associated with post-RFCA recurrence. (3) Shorter post-RFCA recurrence timing was also independently related to EminECVpre (β = −0.147, 95% CI −0.20 to −0.09, p < 0.001). (4) Among 103 patients with recurrent AF after RFCA, 42 AAD-resistant AF patients underwent ECVpost. EminECVpost (100.9 ± 50.8 J) was significantly lower than EminECVpre (130.0 ± 66.1 J, p = 0.006). Conclusions Higher EminECVpre was independently associated with clinical recurrence and earlier recurrence timing of AF after catheter ablation among patients with AAD-resistant L-PeAF. Catheter ablation for L-PeAF significantly reduces EminECV.

Original languageEnglish
Pages (from-to)162-168
Number of pages7
JournalJournal of Cardiology
Volume69
Issue number1
DOIs
Publication statusPublished - 2017 Jan 1

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Electric Countershock
Catheter Ablation
Atrial Fibrillation
Anti-Arrhythmia Agents
Recurrence
Pharmaceutical Preparations
Electrodes

All Science Journal Classification (ASJC) codes

  • Cardiology and Cardiovascular Medicine

Cite this

Kim, In Soo ; Kim, Tae Hoon ; Yang, Pil Sung ; Uhm, Jae Sun ; Joung, Boyoung ; Lee, Moon Hyoung ; pak, huinam. / Minimal energy requirement for external cardioversion and catheter ablation for long-standing persistent atrial fibrillation. In: Journal of Cardiology. 2017 ; Vol. 69, No. 1. pp. 162-168.
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title = "Minimal energy requirement for external cardioversion and catheter ablation for long-standing persistent atrial fibrillation",
abstract = "Background The minimal energy requirement (Emin) for electrical cardioversion (ECV) reflects the atrial substrate in patients with long-standing persistent atrial fibrillation (L-PeAF), but the relationship between EminECV and radiofrequency catheter ablation (RFCA) has not yet been studied. We hypothesize that EminECV before ablation (EminECVpre) predicts clinical outcome of RFCA, and that catheter ablation reduces EminECVpost. Methods We included 172 patients with L-PeAF who underwent RFCA (79.7{\%} males, 57.5 ± 10.0 years) due to AF recurrence after ECV with an anti-arrhythmic drug (AAD). ECV began with 70 J (patch electrode on anterior–posterior position) and was serially increased to 100, 150, 200, and 250 J until sinus rhythm was achieved, at an average 5.0 ± 5.6 months before RFCA. After RFCA, ECV was repeated (ECVpost) in 42 patients with recurrent AF that was not controlled by AAD. Results (1) During 34.8 ± 20.0 months of follow-up after RFCA, 103 patients (59.9{\%}) showed clinical recurrence of AF after RFCA. EminECVpre was significantly higher in patients with recurrent AF (129.0 ± 58.6 J) than those who remained in sinus rhythm (94.2 ± 39.4 J, p < 0.001). (2) EminECVpre ≥150 J (HR = 3.31, 95{\%} CI 2.18–5.03, p < 0.001) and left atrial volume index (HR = 1.02, 95{\%} CI 1.00–1.04, p = 0.021) were significantly associated with post-RFCA recurrence. (3) Shorter post-RFCA recurrence timing was also independently related to EminECVpre (β = −0.147, 95{\%} CI −0.20 to −0.09, p < 0.001). (4) Among 103 patients with recurrent AF after RFCA, 42 AAD-resistant AF patients underwent ECVpost. EminECVpost (100.9 ± 50.8 J) was significantly lower than EminECVpre (130.0 ± 66.1 J, p = 0.006). Conclusions Higher EminECVpre was independently associated with clinical recurrence and earlier recurrence timing of AF after catheter ablation among patients with AAD-resistant L-PeAF. Catheter ablation for L-PeAF significantly reduces EminECV.",
author = "Kim, {In Soo} and Kim, {Tae Hoon} and Yang, {Pil Sung} and Uhm, {Jae Sun} and Boyoung Joung and Lee, {Moon Hyoung} and huinam pak",
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language = "English",
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pages = "162--168",
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Minimal energy requirement for external cardioversion and catheter ablation for long-standing persistent atrial fibrillation. / Kim, In Soo; Kim, Tae Hoon; Yang, Pil Sung; Uhm, Jae Sun; Joung, Boyoung; Lee, Moon Hyoung; pak, huinam.

In: Journal of Cardiology, Vol. 69, No. 1, 01.01.2017, p. 162-168.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Minimal energy requirement for external cardioversion and catheter ablation for long-standing persistent atrial fibrillation

AU - Kim, In Soo

AU - Kim, Tae Hoon

AU - Yang, Pil Sung

AU - Uhm, Jae Sun

AU - Joung, Boyoung

AU - Lee, Moon Hyoung

AU - pak, huinam

PY - 2017/1/1

Y1 - 2017/1/1

N2 - Background The minimal energy requirement (Emin) for electrical cardioversion (ECV) reflects the atrial substrate in patients with long-standing persistent atrial fibrillation (L-PeAF), but the relationship between EminECV and radiofrequency catheter ablation (RFCA) has not yet been studied. We hypothesize that EminECV before ablation (EminECVpre) predicts clinical outcome of RFCA, and that catheter ablation reduces EminECVpost. Methods We included 172 patients with L-PeAF who underwent RFCA (79.7% males, 57.5 ± 10.0 years) due to AF recurrence after ECV with an anti-arrhythmic drug (AAD). ECV began with 70 J (patch electrode on anterior–posterior position) and was serially increased to 100, 150, 200, and 250 J until sinus rhythm was achieved, at an average 5.0 ± 5.6 months before RFCA. After RFCA, ECV was repeated (ECVpost) in 42 patients with recurrent AF that was not controlled by AAD. Results (1) During 34.8 ± 20.0 months of follow-up after RFCA, 103 patients (59.9%) showed clinical recurrence of AF after RFCA. EminECVpre was significantly higher in patients with recurrent AF (129.0 ± 58.6 J) than those who remained in sinus rhythm (94.2 ± 39.4 J, p < 0.001). (2) EminECVpre ≥150 J (HR = 3.31, 95% CI 2.18–5.03, p < 0.001) and left atrial volume index (HR = 1.02, 95% CI 1.00–1.04, p = 0.021) were significantly associated with post-RFCA recurrence. (3) Shorter post-RFCA recurrence timing was also independently related to EminECVpre (β = −0.147, 95% CI −0.20 to −0.09, p < 0.001). (4) Among 103 patients with recurrent AF after RFCA, 42 AAD-resistant AF patients underwent ECVpost. EminECVpost (100.9 ± 50.8 J) was significantly lower than EminECVpre (130.0 ± 66.1 J, p = 0.006). Conclusions Higher EminECVpre was independently associated with clinical recurrence and earlier recurrence timing of AF after catheter ablation among patients with AAD-resistant L-PeAF. Catheter ablation for L-PeAF significantly reduces EminECV.

AB - Background The minimal energy requirement (Emin) for electrical cardioversion (ECV) reflects the atrial substrate in patients with long-standing persistent atrial fibrillation (L-PeAF), but the relationship between EminECV and radiofrequency catheter ablation (RFCA) has not yet been studied. We hypothesize that EminECV before ablation (EminECVpre) predicts clinical outcome of RFCA, and that catheter ablation reduces EminECVpost. Methods We included 172 patients with L-PeAF who underwent RFCA (79.7% males, 57.5 ± 10.0 years) due to AF recurrence after ECV with an anti-arrhythmic drug (AAD). ECV began with 70 J (patch electrode on anterior–posterior position) and was serially increased to 100, 150, 200, and 250 J until sinus rhythm was achieved, at an average 5.0 ± 5.6 months before RFCA. After RFCA, ECV was repeated (ECVpost) in 42 patients with recurrent AF that was not controlled by AAD. Results (1) During 34.8 ± 20.0 months of follow-up after RFCA, 103 patients (59.9%) showed clinical recurrence of AF after RFCA. EminECVpre was significantly higher in patients with recurrent AF (129.0 ± 58.6 J) than those who remained in sinus rhythm (94.2 ± 39.4 J, p < 0.001). (2) EminECVpre ≥150 J (HR = 3.31, 95% CI 2.18–5.03, p < 0.001) and left atrial volume index (HR = 1.02, 95% CI 1.00–1.04, p = 0.021) were significantly associated with post-RFCA recurrence. (3) Shorter post-RFCA recurrence timing was also independently related to EminECVpre (β = −0.147, 95% CI −0.20 to −0.09, p < 0.001). (4) Among 103 patients with recurrent AF after RFCA, 42 AAD-resistant AF patients underwent ECVpost. EminECVpost (100.9 ± 50.8 J) was significantly lower than EminECVpre (130.0 ± 66.1 J, p = 0.006). Conclusions Higher EminECVpre was independently associated with clinical recurrence and earlier recurrence timing of AF after catheter ablation among patients with AAD-resistant L-PeAF. Catheter ablation for L-PeAF significantly reduces EminECV.

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