Bioimpedance spectrometry in the determination of body water compartments: Accuracy and clinical significance

Thomas, B.J.; Ward, Leigh C.; Cornish, Bruce

doi:10.1016/s0969-8043(97)00052-3

Cited by 90 publications

(71 citation statements)

References 23 publications

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“…Bioelectrical impedance analysis (BIA) is inexpensive, easy to use, portable, and requires no radiation exposure [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. Thus, BIA may be useful as a portable alternative to DXA [25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Developing and Validating an Age-Independent Equation of Multi-Frequency Bioelectrical Impedance Analysis for Estimation of Appendicular Skeletal Muscle Mass and Establishing Sarcopenia Cutoff

Yamada¹,

Nishizawa²,

Uchiyama³

et al. 2017

Preprint

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Background: Appendicular skeletal muscle (or lean) mass (ALM) estimated by dualenergy X-ray absorptiometry (DXA) is considered to be a preferred method for sarcopenia studies. However, DXA is expensive, has limited portability, and requires radiation exposure. Bioelectrical impedance analysis (BIA) is inexpensive, easy to use, and portable; thus BIA might be useful in sarcopenia investigations. However, a large variety of models have been commercially supplied by different companies, and for most consumer products, the equations estimating ALM are not disclosed. It is therefore difficult to use these equations for research purposes. In particular, the BIA equation is often age-dependent, which leads to fundamental difficulty in examining age-related ALM loss. The aims of the current study were: 1) to develop and validate an equation to estimate ALM using multi-frequency BIA (MF-BIA) using theoretical models, and 2) to establish sarcopenia cutoff values using the equation for the Japanese population. The mean values minus 2 standard deviations of the skeletal muscle mass index (ALM/Ht 2 ) in these participants were 6.8 and 5.7 kg/m 2 in men and women, respectively. Conclusion: the current study established and validated a theoretical and age-independent equation using MF-BIA to estimate ALM and provided reasonable sarcopenia cutoff values.

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Section: Introductionmentioning

confidence: 99%

Developing and Validating an Age-Independent Equation of Multi-Frequency Bioelectrical Impedance Analysis for Estimation of Appendicular Skeletal Muscle Mass and Establishing Sarcopenia Cutoff

Yamada¹,

Nishizawa²,

Uchiyama³

et al. 2017

Preprint

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“…One of the reasons for inaccuracy of whole body wrist-toankle BIS (WBIS) method may be its view of the body as one cylinder, ignoring differences in geometric shape and size of the various body segments (27,33). A segmental BIS (SBIS) approach has been developed that measures bioimpedance in arm, trunk, and leg segments separately and then estimates total body fluid volumes as a sum of segmental values (2,22).…”

mentioning

confidence: 99%

Segment-specific resistivity improves body fluid volume estimates from bioimpedance spectroscopy in hemodialysis patients

Zhu¹,

Kuhlmann²,

Kaysen³

et al. 2006

Journal of Applied Physiology

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“…Although not difficult to perform and free from radiation risk because the isotopes are stable, the latter studies are time-consuming and costly. BIA has become an accepted method, but there are some important caveats to performing studies in this manner, and some significant variations in the results are inherent when compared with the heavy water (4).…”

mentioning

confidence: 99%

Estimating Total Body Water in Children on the Basis of Height and Weight

Morgenstern¹,

Mahoney²,

Warady³

2002

Journal of the American Society of Nephrology

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Abstract. An estimate of total body water (TBW) has important implications in clinical practice. For patients on peritoneal dialysis (PD), the estimate is critical when determining the delivered dialysis dose. The formulas of Mellits and Cheek have been recommended to estimate TBW in children on PD. These formulas were derived from healthy children, and very few infants were included. To assess the accuracy of these formulas, the original data were obtained and additional data from a broad literature review were compiled. The majority of the new data points were in the infant age range. Data were fitted using least-squares methodology and backward elimination to obtain a parsimonious model. Best fits were obtained using age, gender, and weight or a height ϫ weight term. When compared with the previous Mellits and Cheek formulas, the new formula fits better for infants (comparison of prediction errors, P Ͻ 0.0004). These newer formulas do not perform significantly better for the older two groups. Actual TBW measurement in children on PD must still be determined to verify the use of these formulas and to accurately assess dialysis delivery and adequacy.Knowledge of total body water (TBW) has implications for many areas of clinical practice, such as parenteral fluid therapy (1), pharmacokinetic evaluations, and calculation of the delivered dose of dialysis (2). There are a number of methods used to determine TBW directly (3-6); these include the measurement of distribution of "heavy" water (either D 2 O or H 2 0 [18]), bioimpedance analysis (BIA), and estimates from anthropometrically determined fat mass. The accepted criterion standard measurement of TBW is the use of heavy water. Although not difficult to perform and free from radiation risk because the isotopes are stable, the latter studies are time-consuming and costly. BIA has become an accepted method, but there are some important caveats to performing studies in this manner, and some significant variations in the results are inherent when compared with the heavy water (4).The need to accurately estimate TBW in patients on dialysis has taken on great significance during the past few years (7,8). An estimate of TBW is critical for the calculation of Kt/V urea, a measure of delivered dialysis dose that has become the accepted standard. The V component of this term represents the volume of distribution of urea, widely accepted to equal TBW. For patients on hemodialysis (HD), the V component is calculated as a part of the modeling program used to generate the term Kt/V. In contrast, for patients on PD, it is necessary to estimate V. Among children who require dialysis, many of whom receive PD, an accurate estimate of V is, in turn, clearly desirable. The National Kidney Foundation has established a series of quality of care guidelines through the Dialysis Outcomes Quality Initiative (K/DOQI). The K/DOQI guidelines for peritoneal dialysis adequacy recommend that V (TBW) in children should be estimated using the anthropometric formulas of Mellits and Cheek, becaus...

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Bioimpedance spectrometry in the determination of body water compartments: Accuracy and clinical significance

Cited by 90 publications

References 23 publications

Developing and Validating an Age-Independent Equation of Multi-Frequency Bioelectrical Impedance Analysis for Estimation of Appendicular Skeletal Muscle Mass and Establishing Sarcopenia Cutoff

Developing and Validating an Age-Independent Equation of Multi-Frequency Bioelectrical Impedance Analysis for Estimation of Appendicular Skeletal Muscle Mass and Establishing Sarcopenia Cutoff

Segment-specific resistivity improves body fluid volume estimates from bioimpedance spectroscopy in hemodialysis patients

Estimating Total Body Water in Children on the Basis of Height and Weight

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