Ângulo de fase derivado de bioimpedância elétrica em pacientes sépticos internados em unidades de terapia intensiva

Berbigier, Marina de Carvalho; Pasinato, Valeska Fernandes; Rubin, Bibiana de Almeida; Moraes, Rafael Barberena; Perry, Ingrid Dalira Schweigert

doi:10.1590/s0103-507x2013000100006

Cited by 24 publications

(13 citation statements)

References 30 publications

(54 reference statements)

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“…However, the reactance and the phase angle are variables that are considered unprecedented in the literature for evaluation of milk composition and quality. These variables are commonly used to measure body composition and indicator of survival prognoses in some clinical situations in human beings (Berbigier et al, 2013;Ferreira et al, 2015). However, these measurements had moderate correlations with the components of raw milk.…”

Section: Resultsmentioning

confidence: 99%

Use of electrical bioimpedance analysis to evaluate the quality of bovine raw milk

Schumacher¹,

Viégas²,

Naetzold³

et al. 2019

SA J. An. Sci.

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The objective of the present study was to use electrical bioimpedance analysis (BIA) as an alternative method of evaluating the quality of bovine raw milk. Fourteen lactating purebred Dutch cows were used. For the analyses of milk quality and electrical bioimpedance, 140 ml milk per mammary quarter and a homogeneous sample of each animal were collected, totalling 70 samples. The criteria used to evaluate milk quality consisted of somatic cell count (CCS), total bacterial count (CBT), fat, protein, lactose, total solids (ST) and non-greasy solids (SNG) as required by IN No 62/2011. A monofrequential 50 kHz and 800 μA alternating current generator was used for electrical BIAs. The temperature of the raw milk was 5 °C for all samples. Primary resistance and reactance readings were obtained. From these values, the values of impedance, conductance and phase angle were obtained. Correlation analyses were performed to determine the variables used by the regression analyses. The regression analysis was performed using raw milk components as dependent variables and BIA measurements as independent variables. Lactose, ST and SNG were the components of milk that correlated best and presented moderate prediction equations in relation to BIA variables. The prediction equations using resistance showed R2 of 0.42 and 0.45 for ST and SNG, respectively. In the prediction equation for ST and SNG, the conductance resulted in R2 of 0.45, and 0.45, respectively. Regarding impedance, the R2 of 0.42 and 0.45 were obtained for the predicted equations ST and SNG, respectively. Thus, it can be concluded that BIA has the potential to estimate the composition and quality of bovine raw milk.

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Section: Resultsmentioning

confidence: 99%

Use of electrical bioimpedance analysis to evaluate the quality of bovine raw milk

Schumacher¹,

Viégas²,

Naetzold³

et al. 2019

SA J. An. Sci.

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“…It also indicates nutritional status and hydration. Its evaluation is superior to other nutritional, anthropometric and serum indicators in different populations [4,5,6,7,8].…”

Section: Introductionmentioning

confidence: 99%

Bioelectrical Impedance Vector Analysis and Phase Angle on Different Oral Zinc Supplementation in Eutrophic Children: Randomized Triple-Blind Study

et al. 2019

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The parameters derived from bioelectrical impedance, phase angle (PA) and bioelectrical impedance vector analysis (BIVA) have been associated with cell membrane integrity and body cell mass. Zinc is a micronutrient that exerts important structural functions and acts in maintaining cellular functionality. To evaluate cell integrity and body cell mass, PA and BIVA were evaluated in children orally supplemented with zinc at different concentrations. Anthropometric, bioelectrical (resistance and reactance) and serum zinc variables were collected from two randomized, triple-blind, controlled clinical trials. Sampling was composed of 71 children consisting of three groups: a control group who received a placebo and two experimental groups who received oral supplementation of 5 or 10 mg-Zn/day for three months. The three groups presented increases (p < 0.001) in the linear height and weight. In the group supplemented with 10 mg-Zn/day, there was an increase in reactance values (p = 0.036) and PA (p = 0.002), in addition to vector displacement (p < 0.001) in relation to the confidence ellipses. An increase in serum zinc concentration was found (p < 0.001) in all three groups. Whit this, the supplementation with 10 mg-Zn/day promotes changes in the integrity of the cell membrane associated with the increase in the cellular mass of healthy children.

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“…PA is being highlighted as a useful tool for evaluating patient prognosis under different clinical conditions (12, 23). PA is able to indicate the nutritional prognosis and can act as a predictor of survival in critically ill patients, as well as in patients with cirrhosis, cancer, nephropathies, and sepsis (11, 23, 37).…”

Section: Discussionmentioning

confidence: 99%

Bioelectrical impedance vector analysis and phase angle in boys with Duchenne muscular dystrophy

Vermeulen

Lopes

Grilo

et al. 2019

Food & Nutrition Research

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Background Duchenne muscular dystrophy (DMD) is a disease characterized by progressive loss of functional muscle mass followed by changes in body composition. Objective This study aimed to describe and evaluate bioimpedance parameters in boys with DMD. Design This cross-sectional, descriptive study investigated children and adolescents diagnosed with DMD. Age, weight, height, resistance, and reactance data were collected. Phase angle and bioelectrical impedance vector analysis were calculated based on resistance and reactance values. Results We analyzed 43 boys aged between 2.7 and 19.8 years. Low-phase angle values were observed during the investigation of bioimpedance parameters. Bioelectrical impedance vector analysis showed that approximately 87% of the subjects presented vectors outside the tolerance ellipses, and only one patient presented vectors located within the 50% tolerance ellipse, indicating normally hydrated and a good body cell mass. Compared with the reference population, boys with DMD had lower levels of body cell mass. Conclusion Based on the evidence, compared with the reference population, patients with DMD had lower levels of body cell mass. This evidence points to bioimpedance parameters as useful tools for the nutritional evaluation and clinical management of patients with DMD.

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Ângulo de fase derivado de bioimpedância elétrica em pacientes sépticos internados em unidades de terapia intensiva

Cited by 24 publications

References 30 publications

Use of electrical bioimpedance analysis to evaluate the quality of bovine raw milk

Use of electrical bioimpedance analysis to evaluate the quality of bovine raw milk

Bioelectrical Impedance Vector Analysis and Phase Angle on Different Oral Zinc Supplementation in Eutrophic Children: Randomized Triple-Blind Study

Bioelectrical impedance vector analysis and phase angle in boys with Duchenne muscular dystrophy

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