The effect of subcutaneous fat on electrical impedance myography when using a handheld electrode array: the case for measuring reactance.
The effect of subcutaneous fat on electrical impedance myography when using a handheld electrode array: the case for measuring reactance.
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DOI：
10.1016/j.clinph.2012.07.013
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发表时间：
2013-02
期刊：
影响因子：
--
通讯作者：
Rutkove SB
中科院分区：
文献类型：
--
作者：
Sung M;Spieker AJ;Narayanaswami P;Rutkove SB
电阻抗肌描记术（EIM）的最新发展导致使用手持式电极阵列（HEA）进行数据采集。尽管由于若干原因是优选的，但是该方法往往比阻抗测量电极间隔较宽的原始方法更受皮下脂肪（SF）的影响。在本研究中，我们试图确定使用HEA时受皮下脂肪（SF）影响最小的EIM参数。18例正常人进行50 kHz EIM和优势侧内侧腓肠肌超声检查。计算三个主要EIM变量（电抗、电阻和相位）和SF厚度的决定系数（R2值）。对于电阻和相位，观察到与SF厚度的强相关性（分别为R2 = 0.64和R2 = 0.70，两者均为p < 0.001）。相比之下，对于电抗，这种关系不显着，R2 = 0.07，p = 0.30。与电阻和相位不同，电阻和相位都受到SF厚度的高度影响，电抗没有显示出显著的关系。未来的临床研究，采用HEA的执行EIM应该评估的电抗的变化超过那些在电阻和相位。
Recent developments in electrical impedance myography (EIM) have led to the use of handheld electrode arrays (HEA) for data acquisition. Although preferable for several reasons, this approach tends to be more affected by subcutaneous fat (SF) than the original approach in which the impedance-measuring electrodes are widely spaced. In this study, we seek to identify the EIM parameter least impacted by subcutaneous fat (SF) when using an HEA. 18 normal subjects underwent 50 kHz EIM and ultrasound of the medial gastrocnemius muscles on the dominant side. Coefficients of determination (R2 values) were calculated for each of the three major EIM variables (reactance, resistance, and phase) and SF thickness. For both resistance and phase, a strong relationship to SF thickness was observed (R2 = 0.64 and R2 = 0.70, respectively, p < 0.001 for both). In contrast, for reactance, the relationship was non-significant, with R2 = 0.07, p = 0.30. Unlike resistance and phase, both of which are highly impacted by SF thickness, the reactance shows no significant relationship. Future clinical studies employing HEA’s to perform EIM should evaluate alterations in reactance over those in resistance and phase.
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50-kHz电阻抗的参考值。
影响因子：
3.4
作者：
Rutkove, Seward B.;Fogerson, Patricia M.;Garmirian, Lindsay P.;Tarulli, Andrew W.
通讯作者：
Tarulli, Andrew W.
影响因子：
3.4
作者：
Rutkove, Seward B.;Shefner, Jeremy M.;Darras, Basil T.
通讯作者：
Darras, Basil T.
影响因子：
3.4
作者：
Rutkove, Seward B.
通讯作者：
Rutkove, Seward B.
影响因子：
3.5
作者：
Shiffman, CA;Aaron, R;Coomler, K
通讯作者：
Coomler, K
DOI：
10.1111/j.1749-6632.1999.tb09451.x
发表时间：
1999-01-01
期刊：
ELECTRICAL BIOIMPEDANCE METHODS: APPLICATIONS TO MEDICINE AND BIOTECHNOLOGY
影响因子：
--
作者：
Lukaski, HC
通讯作者：
Lukaski, HC