Usefulness of filtered unipolar electrogram morphology for evaluating transmurality of ablated lesions during pulmonary vein isolation
Background: Although alteration of the amplitude and morphology of bipolar electrograms is used widely as a guide of the ablation effect, there is little information concerning unipolar electrograms. The amplitude and morphology of filtered bipolar (BP) and filtered unipolar (UP) electrograms were c...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2016-04-01
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| Series: | Journal of Arrhythmia |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1880427615001386 |
| _version_ | 1818911812999970816 |
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| author | Rikitake Kogawa, MD Ichiro Watanabe, MD Yasuo Okumura, MD Hiroaki Mano, MD Kazumasa Sonoda, MD Koichi Nagashima, MD Naoko Sasaki, MD Kimie Ohkubo, MD Keiko Takahashi, MD Kazuki Iso, MD Sayaka Kurokawa, MD Toshiko Nakai, MD Atsushi Hirayama, MD |
| author_facet | Rikitake Kogawa, MD Ichiro Watanabe, MD Yasuo Okumura, MD Hiroaki Mano, MD Kazumasa Sonoda, MD Koichi Nagashima, MD Naoko Sasaki, MD Kimie Ohkubo, MD Keiko Takahashi, MD Kazuki Iso, MD Sayaka Kurokawa, MD Toshiko Nakai, MD Atsushi Hirayama, MD |
| author_sort | Rikitake Kogawa, MD |
| collection | DOAJ |
| description | Background: Although alteration of the amplitude and morphology of bipolar electrograms is used widely as a guide of the ablation effect, there is little information concerning unipolar electrograms. The amplitude and morphology of filtered bipolar (BP) and filtered unipolar (UP) electrograms were compared during pulmonary vein isolation in patients with atrial fibrillation.
Methods: BP (30–250 Hz) and UP (30–100 Hz) signals from the ablation catheter were recorded before and after each ablation point at the pulmonary vein antrum in 6 patients with atrial fibrillation.
Results: In the electrogram group with low-voltage amplitude in BP electrograms before ablation (<0.5 mV), the reduction in amplitude after ablation was significantly greater in the UP than in the BP electrograms, whereas the reduction was similar between the two recording methods in the electrogram group with high-voltage amplitude in BP electrograms (≥0.5 mV). Furthermore, the S wave in the UP electrograms disappeared at the sites of no pace capture after ablation, whereas no characteristic morphologic changes were observed in the BP electrograms.
Conclusion: Filtered UP electrograms may be useful in assessing the effectiveness of lesion formation. |
| first_indexed | 2024-12-19T23:04:39Z |
| format | Article |
| id | doaj.art-f118b44496e041b79a328db617bc7c33 |
| institution | Directory Open Access Journal |
| issn | 1880-4276 |
| language | English |
| last_indexed | 2024-12-19T23:04:39Z |
| publishDate | 2016-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Arrhythmia |
| spelling | doaj.art-f118b44496e041b79a328db617bc7c332022-12-21T20:02:25ZengWileyJournal of Arrhythmia1880-42762016-04-0132210811110.1016/j.joa.2015.10.001Usefulness of filtered unipolar electrogram morphology for evaluating transmurality of ablated lesions during pulmonary vein isolationRikitake Kogawa, MDIchiro Watanabe, MDYasuo Okumura, MDHiroaki Mano, MDKazumasa Sonoda, MDKoichi Nagashima, MDNaoko Sasaki, MDKimie Ohkubo, MDKeiko Takahashi, MDKazuki Iso, MDSayaka Kurokawa, MDToshiko Nakai, MDAtsushi Hirayama, MDBackground: Although alteration of the amplitude and morphology of bipolar electrograms is used widely as a guide of the ablation effect, there is little information concerning unipolar electrograms. The amplitude and morphology of filtered bipolar (BP) and filtered unipolar (UP) electrograms were compared during pulmonary vein isolation in patients with atrial fibrillation. Methods: BP (30–250 Hz) and UP (30–100 Hz) signals from the ablation catheter were recorded before and after each ablation point at the pulmonary vein antrum in 6 patients with atrial fibrillation. Results: In the electrogram group with low-voltage amplitude in BP electrograms before ablation (<0.5 mV), the reduction in amplitude after ablation was significantly greater in the UP than in the BP electrograms, whereas the reduction was similar between the two recording methods in the electrogram group with high-voltage amplitude in BP electrograms (≥0.5 mV). Furthermore, the S wave in the UP electrograms disappeared at the sites of no pace capture after ablation, whereas no characteristic morphologic changes were observed in the BP electrograms. Conclusion: Filtered UP electrograms may be useful in assessing the effectiveness of lesion formation.http://www.sciencedirect.com/science/article/pii/S1880427615001386Atrial fibrillationPulmonary vein isolationFiltered unipolar electrogramDurable pulmonary vein isolation |
| spellingShingle | Rikitake Kogawa, MD Ichiro Watanabe, MD Yasuo Okumura, MD Hiroaki Mano, MD Kazumasa Sonoda, MD Koichi Nagashima, MD Naoko Sasaki, MD Kimie Ohkubo, MD Keiko Takahashi, MD Kazuki Iso, MD Sayaka Kurokawa, MD Toshiko Nakai, MD Atsushi Hirayama, MD Usefulness of filtered unipolar electrogram morphology for evaluating transmurality of ablated lesions during pulmonary vein isolation Journal of Arrhythmia Atrial fibrillation Pulmonary vein isolation Filtered unipolar electrogram Durable pulmonary vein isolation |
| title | Usefulness of filtered unipolar electrogram morphology for evaluating transmurality of ablated lesions during pulmonary vein isolation |
| title_full | Usefulness of filtered unipolar electrogram morphology for evaluating transmurality of ablated lesions during pulmonary vein isolation |
| title_fullStr | Usefulness of filtered unipolar electrogram morphology for evaluating transmurality of ablated lesions during pulmonary vein isolation |
| title_full_unstemmed | Usefulness of filtered unipolar electrogram morphology for evaluating transmurality of ablated lesions during pulmonary vein isolation |
| title_short | Usefulness of filtered unipolar electrogram morphology for evaluating transmurality of ablated lesions during pulmonary vein isolation |
| title_sort | usefulness of filtered unipolar electrogram morphology for evaluating transmurality of ablated lesions during pulmonary vein isolation |
| topic | Atrial fibrillation Pulmonary vein isolation Filtered unipolar electrogram Durable pulmonary vein isolation |
| url | http://www.sciencedirect.com/science/article/pii/S1880427615001386 |
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