Comparison between bioelectrical impedance spectroscopy measurements and water volume displacement of ankle oedema variations during the course of a day

This study validated bioelectrical impedance spectroscopy (BIS) with Cole-Cole modeled measurements of calf and arm segmental water volume and volume changes during 72 h of simulated microgravity and caloric restriction by using magnetic resonance imaging (MRI) muscle volume as a criterion method. MRI and BIS measurements of calf and upper arm segments were made in 18 healthy men and women [age, 29 ± 8 (SD) yr; height, 171 ± 11 cm; mass, 71 ± 16 kg] before and after the intervention. Muscle volume of arm and leg segments by MRI was on average 15 ± 10 and 14 ± 8% lower, respectively, than the estimated total water volume by BIS ( P < 0.01), but their correlations were excellent ( r = 0.96 and r = 0.93, respectively). MRI- vs. BIS-predicted volume changes were a decrease of 49 ± 68 vs. 41 ± 62 ml in the calf and a decrease of 18 ± 23 vs. 11 ± 24 ml in the arm, respectively ( P > 0.05 for both). BIS detected the extracellular water shifts in the calf resulting from the head-down tilt treatment, but the underfeeding protocol was not of sufficient duration or intensity to produce limb intracellular water changes detectable by BIS. BIS was highly correlated with segmental muscle volume and tracked changes associated with head-down tilt. Further research, however, is needed to determine whether BIS can accurately access separate changes in intracellular and extracellular volume.

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Influence of Posture and Frequency Modes in Total Body Water Estimation Using Bioelectrical Impedance Spectroscopy in Boys and Adult Males

Nutrients ◽

10.3390/nu6051886 ◽

2014 ◽

Vol 6 (5) ◽

pp. 1886-1898 ◽

Cited By ~ 4

Author(s):

Masaharu Kagawa ◽

Connie Wishart ◽

Andrew Hills

Keyword(s):

Impedance Spectroscopy ◽

Total Body Water ◽

Bioelectrical Impedance ◽

Body Water ◽

Adult Males ◽

Total Body

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Bioelectrical Impedance Analysis of Water Reduction in Lower-Limb Lymphedema by Lymphaticovenular Anastomosis

Journal of Reconstructive Microsurgery ◽

10.1055/s-0038-1675368 ◽

2018 ◽

Vol 35 (04) ◽

pp. 306-314 ◽

Cited By ~ 3

Author(s):

Yoshichika Yasunaga ◽

Daisuke Yanagisawa ◽

Erika Ohata ◽

Kiyoshi Matsuo ◽

Shunsuke Yuzuriha

Keyword(s):

Lower Limb ◽

Bioelectrical Impedance Analysis ◽

Linear Regression Analysis ◽

Reduction Rate ◽

Bioelectrical Impedance ◽

Impedance Analysis ◽

Body Water ◽

Volume Reduction ◽

Water Volume ◽

The Mean

Background Although lymphedema is fundamentally abnormal accumulation of excess water in the extracellular space, previous studies have evaluated the efficacy of physiological bypass surgery (lymphaticovenular anastomosis [LVA]) for lymphedema without measuring water volume. This study clarified the water reductive effect of LVA using bioelectrical impedance analysis (BIA). Methods The efficacy of LVA for unilateral lower-limb lymphedema was evaluated using BIA in a retrospective cohort. The water volume of affected and unaffected legs was measured using multifrequency BIA before and after LVA. Preoperative measurements were undertaken after compression therapy for at least 3 months. The follow-up period after LVA was a minimum of 6 months. Results Thirty consecutive patients with unilateral lower-limb lymphedema were enrolled. The mean water volume reduction of the affected leg by LVA (ΔLBW) was 0.86 L (standard deviation [SD]: 0.86, median: 0.65) with a mean number of 3.3 anastomoses (SD: 1.7). The mean reduction rate of edema was 45.1% (SD: 36.3). Multiple linear regression analysis revealed water volume difference between the affected and unaffected legs before LVA (excess LBW) as the strongest predictor of ΔLBW (R 2 = 0.759, p < 0.01; β = 0.500, p < 0.01). Conclusion The LVA reduces the volume of accumulated body water in lower-limb lymphedema. As excess LBW most strongly predicted the amount of water volume reduction by LVA, body water volume measurement by BIA before LVA might identify patients with low excess LBW not expected to benefit from LVA, regardless of apparent differences in limb circumference.

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