Bioimpedance Analysis (BIA) in Hemodialysis: Technical Aspects

Talluri, Antonio; Maggia, G.

doi:10.1177/039139889501801101

Cited by 24 publications

(15 citation statements)

References 5 publications

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“…The relation between Xc and PA seems to be useful for evaluating the nutritional status in terms of ECM/BCM, without being affected by anthropometric characteristics of the subject [7,[25][26][27][28]. Xc is the dielectric component due to the additional opposition to the current flow from the presence of capacitance, produced by the effect of cell membranes, tissue interfaces and nonionic tissues; thus Xc appears related to body cell mass.…”

Section: Discussionmentioning

confidence: 99%

“…BV is well correlated with extracellular mass/ body cell mass rates (ECM/BCM) and could be representative of nutritional status [7,[25][26][27][28].…”

Section: Bioelectrical Impedance Analysismentioning

confidence: 99%

“…This method might be helpful in clinical practice. In fact, bivariate analysis of Xc and PA (bioelectrical nomogram, 'Biagram') gives reliable information about the nutritional status [7,[25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

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The Biagram Vector: A Graphical Relation between Reactance and Phase Angle Measured by Bioelectrical Analysis in Infants

et al. 2004

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Background: Biagram vector is derived by plotting direct measurements of reactance and phase angle from the analyzer, which are not dependent on anthropometric characteristics of the subject and it can be considered an emerging method for evaluating the nutritional status in clinical practice. Aim: To calculate and plot the Biagram vector in a sample of healthy infants in their first year of life. Methods: 174 healthy infants (99 male, 75 female) aged under 1 year, born at full term and adequate for gestational age, were enrolled in a cross-sectional study. The sample was divided into three age groups: 0–3.99 months (group A), 4–7.99 months (group B), and 8–11.99 months (group C). Bioelectric impedance analysis (BIA) was performed by a tetrapolar single frequence phase-sensitive impedance analyzer (STA/BIA; Akern Srl, Firenze, Italy). Results: Biagram vector showed an increasing trend (p < 0.05) in the first year of life (group A: 27.9 ± 12.6; group B: 32.1 ± 9.7; group C: 37.2 ± 9.5). Females showed Biagram vector values significantly higher than males in group A (34.7 ± 15.0 vs. 24.0 ± 9.1; p < 0.05). 95% confidence ellipses of Biagram vector for each age group were calculated and plotted and a comparison of our results with published data calculated in older children was conducted. Conclusion: The bivariate analysis of BIA measurements, plotted as a vector in relation to the age, showed an increasing trend with a higher gain rate under 1 year with respect to the following age periods. These data could reflect the variation of body composition in the first years of life and could be of interest to assess the nutritional status for clinical practice.

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Section: Discussionmentioning

confidence: 99%

“…BV is well correlated with extracellular mass/ body cell mass rates (ECM/BCM) and could be representative of nutritional status [7,[25][26][27][28].…”

Section: Bioelectrical Impedance Analysismentioning

confidence: 99%

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The Biagram Vector: A Graphical Relation between Reactance and Phase Angle Measured by Bioelectrical Analysis in Infants

et al. 2004

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“…Florence, Italy) [10][11][12] was used to measure the variation of resistance between t 0 and t 1 (%), which expresses conductor opposition to the fl ow of alternate currents, and is inversely proportional to total body fl uids, and the variation in capacitive reactance between t 0 and t 1 (%), which expresses condenser opposition to the fl ow of alternating current, and is directly proportional to cellular mass.…”

Section: Methodsmentioning

confidence: 99%

Intraoperative Positive Fluid Balance Improves Tissue Diffusion of Ceftizoxime

Filippo

Cammelli²,

Novelli³

et al. 2005

Chemotherapy

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Aim of Study: To demonstrate that administration of fluids and the consequent improvement of fluid balance during a surgical procedure can modify the tissue diffusion of ceftizoxime. Methods: Twenty-eight patients (30–79 years) undergoing major abdominal surgery of the colon were administered ceftizoxime 30 mg/kg i.v. at induction of anesthesia. A sample of arterial blood was taken before administration of the drug (t₀) and then again at the time of vascular occlusion of the colon segment to be removed (t₁). A sample of the segment of removed colon was taken. The patients were divided into two groups on the basis of the fluid balance between t₀ and t₁: group A (n = 17) with a fluid balance <1,000 ml and group B (n = 11) with a fluid balance >1,000 ml. The parameters evaluated in each group were: weight, height and age of the patients, serum and tissue antibiotic concentration, percent ratio of serum and tissue concentration, time elapsed between t₀ and t₁, volume of administered fluids between t₀ and t₁, diuresis and hourly diuresis between t₀ and t₁ and body fluid distribution, obtained using a bioelectrical impedance analyzer. The mean results obtained in the two groups were then compared using Student’s t test. Results: The balance of fluids calculated up to t₁ was 675 ± 308 ml for group A and 1,411 ± 405 ml for group B (p < 0.01). The means of the recorded values that showed statistically significant differences were: mean percent concentration ratio (43.6 ± 8.4 vs. 84 ± 16%; p < 0.05), concentration in the colonic segment (16.3 ± 7.9 vs. 37.2 ± 25.9 mg/ml; p < 0.05), urinary volume gathered up to t₁ (538 ± 557 vs. 169 ± 104 ml; p < 0.05), hourly urinary volume up to t₁ (311.1 ± 296 vs. 97.6 ± 77.9 ml/h; p < 0.05), percent variation of resistance (95.1 ± 5.1 vs. 89.7 ± 8.6; p < 0.05). The other means did not show any significant statistical differences. Conclusions: A higher tissue water level seems to facilitate the penetration of the antibiotic into the tissue according to the pharmacokinetic characteristics of ceftizoxime: high amount of free drug (not bound to plasma proteins) and high hydrosolubility.

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“…Essa condição por sua vez, conduz a alterações da integridade das membranas celulares e, consequentemente, da distribuição dos fluidos corporais. Sendo assim, aumento da água extracelular (AEC), redução da concentração intracelular de potássio e aumento correspondente da concentração de sódio são considerados indicadores de desnutrição [24][25][26][27] .…”

Section: Medidas De Pregas Cutâneas E Bioimpedância Elétricaunclassified

Análise do desempenho da bioimpedância elétrica e somatória de pregas cutâneas na avaliação da composição corporal em pacientes renais dialíticos

Rodrigues¹

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Bioimpedance Analysis (BIA) in Hemodialysis: Technical Aspects

Cited by 24 publications

References 5 publications

The Biagram Vector: A Graphical Relation between Reactance and Phase Angle Measured by Bioelectrical Analysis in Infants

The Biagram Vector: A Graphical Relation between Reactance and Phase Angle Measured by Bioelectrical Analysis in Infants

Intraoperative Positive Fluid Balance Improves Tissue Diffusion of Ceftizoxime

Análise do desempenho da bioimpedância elétrica e somatória de pregas cutâneas na avaliação da composição corporal em pacientes renais dialíticos

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