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Three dimensional ultra-high-density electro-anatomical cardiac mapping in horses: methodology.

马的三维超高密度电解剖心脏标测: 方法学。

  • 影响因子:1.86
  • DOI:10.1111/evj.13229
  • 作者列表:"Van Steenkiste G","De Clercq D","Boussy T","Vera L","Schauvliege S","Decloedt A","van Loon G
  • 发表时间:2020-09-01
Abstract

BACKGROUND:Ultra-high-density cardiac mapping allows very accurate characterisation of atrial and ventricular electrophysiology and activation timing. OBJECTIVE:To describe the technique and evaluate the feasibility of magnetic electro-anatomical mapping of the equine heart. STUDY DESIGN:In vivo experimental method development. METHODS:A mapping system using an 8.5F bidirectional deflectable catheter with a deployable mini-basket (3-22 mm) containing 64 electrodes divided over eight splines was evaluated. Based upon predefined beat acceptance criteria, the system automatically acquires endocardial electrograms and catheter location information. Electro-anatomical maps were acquired from four horses in sinus rhythm under general anaesthesia. RESULTS:All endocardial areas within each chamber could be reached. Access to the left atrium required the use of a deflectable sheath. With the exception of the left atrial map of horse 1, all four chambers in all four horses could be mapped. Optimisation of the beat acceptance criteria led to a reduction in manual correction of the automatically accepted beats from 13.1% in the first horse to 0.4% of the beats in the last horse. MAIN LIMITATIONS:Only a limited number of horses were included in the study. CONCLUSION:Ultra-high-density 3D electro-anatomical mapping is feasible in adult horses and is a promising tool for electrophysiological research and characterisation of complex arrhythmias.

摘要

背景: 超高密度心脏标测可以非常准确地表征心房和心室电生理学和激活时间。 目的: 探讨马心脏磁电解剖标测技术的可行性。 研究设计: 体内实验方法开发。 方法: 评估使用8.5F双向可偏转导管的标测系统,该导管具有可展开的微型篮 (3-22毫米),包含在8条样条上分开的64个电极。基于预定义的搏动接受标准,系统自动获取心内膜电描记图和导管位置信息。在全身麻醉下从窦性心律中的四匹马获取电解剖图。 结果: 每个腔室内的所有心内膜区域均可到达。进入左心房需要使用可偏转的鞘。除了马1的左心房图之外,所有四匹马中的所有四个腔室都可以被映射。节拍接受标准的优化导致自动接受节拍的手动校正从第一匹马的13.1% 减少到最后一匹马的0.4%。 主要限制: 研究中仅包括有限数量的马。 结论: 超高密度三维电解剖图在成年马中是可行的,并且是用于复杂心律失常的电生理研究和表征的有前途的工具。

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影响因子:1.41
发表时间:2020-03-01
DOI:10.1177/1078155219848810
作者列表:["Kim S","Namba J","Goodman AM","Nguyen T","Saunders IM"]

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影响因子:1.64
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翻译标题与摘要 下载文献
心律失常方向

心律失常(arrhythmia)是由于窦房结激动异常或激动产生于窦房结以外,激动的传导缓慢、阻滞或经异常通道传导,即心脏活动的起源和(或)传导障碍导致心脏搏动的频率和(或)节律异常。心律失常是心血管疾病中重要的一组疾病,可单独发病,亦可与其他心血管病伴发。其预后与心律失常的病因、诱因、演变趋势、是否导致严重血流动力障碍有关,可突然发作而致猝死,亦可持续累及心脏而致其衰竭。

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