健康受试者体表电位的内部和人际变化

IF 2.5 Q2 CARDIAC & CARDIOVASCULAR SYSTEMS
Iris van der Schaaf MD , Manon Kloosterman MSc , Deepthi Priya Chandrasekaran MSc , Peter Loh MD, PhD , Johan de Bie PhD , Peter M. van Dam PhD
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引用次数: 0

摘要

体表电位映射(BSPM)可以提供心脏电活动的详细评估,并且可能在多种心脏疾病中具有潜在的附加益处。BSPM的正常内部和人际变异尚未得到明确描述,可能用于区分正常变异和心脏病的发展。目的探讨正常呼吸、体位变化、反复电极放置和心率差异对健康人群BSPM信号的影响。方法健康人分别在静卧位、45°仰卧位、运动加速心率下进行67导联BSPM,并于1周后在静卧位进行随访测量,以确定重复电极放置的效果。比较基线仰卧位和上述条件下所有导联的R、S和t波振幅。结果男性5例(50%);中位年龄28岁(四分位数间距[IQR] 26-30岁)}。在所有条件下,r波振幅变化最大,其中重复电极放置(最大减少-0.63 mV [IQR - 0.69至- 0.22 mV])和正常呼吸(最大增加0.32 mV [IQR - 0.08-0.55 mV])引起的变化最大,而倾斜位置引起的变化最小(最大减少- 0.23 mV [IQR - 0.28至- 0.15 mV])。靠近标准心前位置的电极受影响最大。运动增加的心率降低了左电极的r波振幅,增加了中上电极的s波振幅。运动后t波振幅普遍增大。结论BSPM信号具有正常的个体差异。重复电极放置和正常呼吸引起最大的振幅变化。这些发现可能有助于区分BSPM的正常变化和病理变化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Intra- and interpersonal variation in body surface potentials of healthy subjects

Intra- and interpersonal variation in body surface potentials of healthy subjects

Background

Body surface potential mapping (BSPM) can provide a detailed assessment of cardiac electrical activity and might be of potential added benefit in multiple cardiac diseases. Normal intra- and interpersonal variation in BSPM is not clearly described and could be of use in the distinction between normal variation and cardiac disease development.

Objective

The purpose of this study was to describe the effects of normal respiration, changes in body position, repeated electrode placement, and heart rate differences on BSPM signals in a healthy population.

Methods

Sixty-seven–lead BSPM was performed in healthy individuals during the resting supine position, a reclined position of 45°, an exercise-increased heart rate, and a follow-up measurement in the resting supine position after 1 week to determine the effect of repeated electrode placement. R-, S- and T-wave amplitudes in all leads were compared between the baseline supine position and the aforementioned conditions.

Results

Ten subjects were included {5 (50%) male; median age 28 years (interquartile range [IQR] 26–30 years)}. The R-wave showed the greatest amplitude variation across all conditions, with the largest changes caused by repeated electrode placement (maximum decrease –0.63 mV [IQR −0.69 to −0.22 mV]) and normal respiration (maximum increase 0.32 mV [IQR 0.08–0.55 mV]) and the smallest changes due to reclined position (maximum decrease −0.23 mV [IQR −0.28 to −0.15 mV]). Electrodes near standard precordial positions were most affected. The exercise-increased heart rate reduced the R-wave amplitude in left-sided electrodes and increased the S-wave amplitude in middle superior electrodes. T-wave amplitude generally increased after exercise.

Conclusion

Normal intrapersonal variation in BSPM signals was analyzed. Repeated electrode placement and normal respiration caused the largest amplitude changes. These findings may help differentiate normal variation from pathological changes in BSPM.
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来源期刊
Heart Rhythm O2
Heart Rhythm O2 Cardiology and Cardiovascular Medicine
CiteScore
3.30
自引率
0.00%
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审稿时长
52 days
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