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A new mapping method to estimate exit sites of ventricular arrhythmias using intracardiac echocardiography and M-mode for catheter ablation.

作者信息

Inaba Osamu, Nitta Junichi, Kuroda Syunsuke, Sekigawa Masahiro, Suzuki Masahito, Inamura Yukihiro, Satoh Akira, Isobe Mitsuaki, Hirao Kenzo

机构信息

Department of Cardiology, Saitama Red Cross Hospital, Japan.

Department of Cardiology, Tokyo Medical and Dental University, Japan.

出版信息

J Arrhythm. 2017 Oct;33(5):440-446. doi: 10.1016/j.joa.2017.05.006. Epub 2017 Jul 10.

DOI:10.1016/j.joa.2017.05.006
PMID:29021847
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5634681/
Abstract

BACKGROUND

Catheter ablation of premature ventricular complexes (PVCs) has been used as a curative therapy in many cases. Intracardiac ultrasound with a magnetic sensor probe has recently become available for catheter ablation. In this study, we assessed a new mapping method, contraction mapping, for determining the optimal ablation sites using intracardiac ultrasound and M-mode. This study sought to assess the accuracy of the new mapping method using intracardiac echocardiography.

METHODS

Eighteen patients (10 males and eight females; mean age, 63±12 years) with 104 mapping points diagnosed as idiopathic PVCs were included in this study. At the mapping points, the time interval from the onset of the QRS to the onset of the contraction (QRS-c-time) and the local activation time were measured using M-mode with an intracardiac echo probe and using the conventional method. The correlation between the QRS-c-time and local activation time were studied.

RESULTS

The QRS-c-time was significantly correlated with the local activation time (activation time=-66.8+0.882 * QRS-c-time, 2=0.728, <0.0001).

CONCLUSIONS

Contraction mapping could help determine the local activation time without the delivery of a catheter to the mapping points.

摘要
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b3c/5634681/9962da56e84e/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b3c/5634681/5a6e54c40c25/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b3c/5634681/dce76538ade9/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b3c/5634681/7746984974b5/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b3c/5634681/0a5b42f09f58/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b3c/5634681/0cb2f7d7af5b/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b3c/5634681/9962da56e84e/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b3c/5634681/5a6e54c40c25/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b3c/5634681/dce76538ade9/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b3c/5634681/7746984974b5/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b3c/5634681/0a5b42f09f58/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b3c/5634681/0cb2f7d7af5b/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b3c/5634681/9962da56e84e/gr6.jpg

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J Am Coll Cardiol. 2015 Oct 13;66(15):1714-28. doi: 10.1016/j.jacc.2015.08.038.
2
Radiofrequency ablation versus antiarrhythmic medication for treatment of ventricular premature beats from the right ventricular outflow tract: prospective randomized study.射频消融与抗心律失常药物治疗右心室流出道室性早搏的前瞻性随机研究。
Circ Arrhythm Electrophysiol. 2014 Apr;7(2):237-43. doi: 10.1161/CIRCEP.113.000805. Epub 2014 Feb 12.
3
Relative efficacy of catheter ablation vs antiarrhythmic drugs in treating premature ventricular contractions: a single-center retrospective study.
导管消融与抗心律失常药物治疗室性期前收缩的相对疗效：单中心回顾性研究。
Heart Rhythm. 2014 Feb;11(2):187-93. doi: 10.1016/j.hrthm.2013.10.033. Epub 2013 Oct 22.
4
Prediction and mechanism of frequent ventricular premature contractions related to haemodynamic deterioration.预测与血流动力学恶化相关的频发室性早搏的机制。
Eur J Heart Fail. 2012 Oct;14(10):1112-20. doi: 10.1093/eurjhf/hfs095. Epub 2012 Jun 26.
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Effects of catheter ablation of "asymptomatic" frequent ventricular premature complexes in patients with reduced (<48%) left ventricular ejection fraction.左心室射血分数降低（<48%）患者“无症状”频发室性早搏导管消融的效果。
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