Micra AV无铅起搏器的位置依赖性和隐蔽性房室非同步化。

IF 1.7 4区医学 Q3 CARDIAC & CARDIOVASCULAR SYSTEMS

Pace-Pacing and Clinical Electrophysiology Pub Date : 2025-05-20 DOI:10.1111/pace.15206

Yuta Sudo

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引用次数: 0

摘要

Micra AV无导联起搏器旨在维持不同体位的房室（AV）同步。本报告描述了一例81岁男性的位置依赖性房室不同步，尽管有正常的常规评估，但有夜间心悸。心率直方图分析显示异常分布模式，手动心房机械（MAM）检测显示左侧位A3信号幅度增加，导致过感。调整A3阈值和窗口结束设置可解决症状并使比率直方图正常化。本病例强调了位置依赖性信号变化和率直方图分析在Micra AV患者中的重要性。

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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Position-Dependent and Hidden Atrioventricular Dyssynchrony in Micra AV Leadless Pacemaker.

Micra AV leadless pacemakers aim to maintain atrioventricular (AV) synchrony across various body positions. This report describes a case of position-dependent AV dyssynchrony in an 81-year-old man with nocturnal palpitations despite having normal routine evaluations. Rate histogram analysis revealed an unusual distribution pattern, and manual atrial mechanical (MAM) testing demonstrated an increased A3 signal amplitude in the left lateral position, which resulted in oversensing. Adjusting the A3 threshold and window end settings resolved the symptoms and normalized the rate histogram. This case highlights the importance of position-dependent signal variations and rate histogram analyses in patients with a Micra AV.

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来源期刊

Pace-Pacing and Clinical Electrophysiology 医学-工程：生物医学

CiteScore

2.70

自引率

5.60%

发文量

209

审稿时长

2-4 weeks

期刊介绍： Pacing and Clinical Electrophysiology (PACE) is the foremost peer-reviewed journal in the field of pacing and implantable cardioversion defibrillation, publishing over 50% of all English language articles in its field, featuring original, review, and didactic papers, and case reports related to daily practice. Articles also include editorials, book reviews, Musings on humane topics relevant to medical practice, electrophysiology (EP) rounds, device rounds, and information concerning the quality of devices used in the practice of the specialty.