Kawashima Akira, Tanimoto Fumi, Nagao Tsuyoshi, Toyoshima Takeshi, Okuyama Yuji
Medcare Ltd., Osaka, Japan.
Cardiac Rhythm Disease Management Unit, USCI Holdings Inc., Japan.
J Arrhythm. 2015 Jun;31(3):130-6. doi: 10.1016/j.joa.2014.09.005. Epub 2014 Oct 23.
Electrode positioning is important for the operation of implantable loop recorders (ILRs). This study aimed to investigate optimal electrode positions for the implantation of ILRs.
Fifteen male subjects participated in the study and R wave amplitude data were collected from 15 areas in the left anterior chest area, with 4 variations of electrode angles and body positions.
The estimated minimum R wave amplitude values were greater than 0.3 mV (manufacturer-recommended value) when electrodes were angled vertically and positioned on the midclavicular line of the third and the forth intercostal spaces or on the left sternal border of the fourth and fifth intercostal space and when angled at 45° to the right on the left sternal border of the third and the forth intercostal space.
Exploring areas around the left sternal border of the fourth intercostal space - where the R wave amplitudes are least affected by body positions - is a reliable method for choosing implantation locations for ILRs.
电极定位对于植入式循环记录仪（ILR）的操作很重要。本研究旨在探讨ILR植入的最佳电极位置。
15名男性受试者参与了该研究，从左前胸区域的15个部位收集R波振幅数据，电极角度和身体位置有4种变化。
当电极垂直放置于第三和第四肋间锁骨中线处或第四和第五肋间左胸骨旁线处，以及在第三和第四肋间左胸骨旁线处向右成45°角时，估计的最小R波振幅值大于0.3mV（制造商推荐值）。
探索第四肋间左胸骨旁线周围区域——R波振幅受身体位置影响最小的区域——是选择ILR植入位置的可靠方法。
