Correlation between the electrocardiogram amplitude detected by an implantable cardiac monitor and the implantation depth

IF 1.1 4区医学 Q4 CARDIAC & CARDIOVASCULAR SYSTEMS Annals of Noninvasive Electrocardiology Pub Date : 2023-12-13 DOI:10.1111/anec.13102

Yohei Kawatani MD, PhD, LLB, Takaki Hori MD, PhD

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Abstract

Introduction

Implantable cardiac monitors (ICMs) primarily use R-R intervals in subcutaneous electrocardiograms (ECGs) to detect arrhythmias. Therefore, reliable detection of R-wave amplitude by an ICM is vital. Since ICMs detect subcutaneous ECGs, the impact of the implantation depth should be assessed.

Methods and Results

This study investigated the influence of ICM depth on R-wave (ICM-R) amplitude on an ECG generated by an ICM (JOT Dx; Abbott). Overall, 58 patients who underwent ICM implantation at Kamagaya General Hospital from May 2022 to April 2023 were retrospectively reviewed. The depth-position was measured using ultrasound imaging after implantation. The depth of the ICM did not show any correlation with ICM-R amplitude (r = −.0141, p = .294). However, the distance between the ICM and the heart surface showed a significant correlation with ICM-R amplitude (r = −.581, p < .001). Body weight (r = −.0283, p = .033) and body mass index (r = −.0342, p = .009) were associated with ICM-R amplitude. S wave in the V₁-lead was also associated with ICM-R amplitude (r = .481, p < .001). After multivariate analysis, the distance between the ICM and heart surface and the S wave in V₁ were independent determinants for the ICM-R amplitude.

Conclusion

The ICM-R amplitude may be higher with the ICM implanted deeper.

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植入式心脏监测仪检测到的心电图振幅与植入深度之间的相关性

植入式心脏监护仪(ICMs)主要使用皮下心电图(ECGs)的R-R间隔来检测心律失常。因此，通过ICM可靠地检测r波振幅是至关重要的。由于ICMs检测皮下心电图，应评估植入深度的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Annals of Noninvasive Electrocardiology 医学-心血管系统

CiteScore

3.40

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： The ANNALS OF NONINVASIVE ELECTROCARDIOLOGY (A.N.E) is an online only journal that incorporates ongoing advances in the clinical application and technology of traditional and new ECG-based techniques in the diagnosis and treatment of cardiac patients. ANE is the first journal in an evolving subspecialty that incorporates ongoing advances in the clinical application and technology of traditional and new ECG-based techniques in the diagnosis and treatment of cardiac patients. The publication includes topics related to 12-lead, exercise and high-resolution electrocardiography, arrhythmias, ischemia, repolarization phenomena, heart rate variability, circadian rhythms, bioengineering technology, signal-averaged ECGs, T-wave alternans and automatic external defibrillation. ANE publishes peer-reviewed articles of interest to clinicians and researchers in the field of noninvasive electrocardiology. Original research, clinical studies, state-of-the-art reviews, case reports, technical notes, and letters to the editors will be published to meet future demands in this field.