ESTIMATION OF TOTAL BODY WATER BY BIOELECTRIC IMPEDANCE ANALYSIS IN OLDER MEN AND WOMEN

During treatment of patients with non-insulin-dependent diabetes mellitus, there may be marked body weight loss. Therefore, body composition should be monitored to check for a decrease in fat mass alone, without an excessive decrease of both fat-free mass and total body water. Accordingly, it is useful to monitor the hydration of these patients. One method that allows us to check the status of body hydration is the multifrequency bioelectric impedance analysis (MFBIA). It makes use of formulas that estimate total body water on the basis of the concept that the human body may be approximated to a cylinder of length equal to body height. In normal subjects body water estimates are sufficiently accurate, but in obese subjects the true hydration status may be overestimated. In this report, we describe the accuracy of mathematical models previously described in the literature, and correct for the overestimation of total body water in obese subjects by means of a new equation based on a new model. The coefficients for each model have been recalculated by the weighing of our sample in order to test the accuracy of estimates obtained with the equations. This new model includes both body volume and two impedances at appropriate frequencies useful for identifying two terms strictly related to extra- and intra-cellular water. The new formulas do not include body weight, but they include the body volume, a parameter more closely related to the biophysical reference model. Fifty-five overweight females, body mass index ranging from 26.8 to 50.2 kg/m2, were enrolled in the study. The proposed equations, taking advantage of two impedance values at appropriate frequencies, better predict total body water in obese women. This was particularly evident when the results obtained with the multifrequency bioelectric impedance analysis and deuterium isotopic oxide dilution method were compared. Although this last method is considered the "gold standard," it is not suitable for use in routine clinical practice. In conclusion, evaluation of total body composition by means of bioelectric impedance analysis might be included in programs for the prevention of non-insulin-dependent diabetes and for monitoring weight loss during overt pathology.Key words: body composition, bioelectrical impedance, obesity, diabetes mellitus, extracellular water, intracellular water.

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Perbedaan Hasil Pemeriksaan Bioelectric Impedance Analysis antara Status Nutrisi Baik dan Malnutrisi pada Penderita Penyakit Gastrointestinal dan Hati yang Dirawat Inap di RSCM Tahun 2013

Jurnal Penyakit Dalam Indonesia ◽

10.7454/jpdi.v1i2.43 ◽

2017 ◽

Vol 1 (2) ◽

pp. 108

Author(s):

Taufiq Taufiq ◽

Ari Fahrial Syam ◽

C Rinaldi Lesmana ◽

Suhendro Suwarto

Keyword(s):

Body Mass ◽

Phase Angle ◽

Total Body Water ◽

Cell Mass ◽

Impedance Analysis ◽

Body Cell Mass ◽

Bioelectric Impedance Analysis ◽

Body Cell ◽

Bioelectric Impedance ◽

Total Body

Pendahuluan. Bioelectric Impedance Analysis (BIA) mulai banyak digunakan dalam mengevaluasi status nutrisi. Belum ada data penelitian nutrisi di Indonesia yang menggunakan BIA. Penelitian ini dilakukan untuk mengetahui perbedaan rerata hasil pemeriksaan BIA antara status nutrisi baik dan malnutrisi pada penderita penyakit gastrointestinal dan hati yang dirawat inap. Metode. Penelitian potong lintang retrospektif terhadap penderita yang dirawat inap di ruang perawatan interna RSCM periode 1 Juni-31 Desember 2013, untuk mengetahui perbedaan rerata hasil pemeriksaan BIA penderita status nutrisi baik dan malnutrisi pada penyakit gastrointestinal dan hati yang dirawat inap.Hasil. Dari 28 penderita dengan status nutrisi baik, 71,57% laki-laki, dan 21,47% wanita. Dari 28 penderita malnutrisi, 53,60% laki-laki, dan 46,40% wanita. Rerata hasil pemeriksaan BIA antara penderita nutrisi baik dan malnutrisi adalah: lean body mass, 49,5 ± 8,59 v s39,68 ± 6,28kg, p<0,001; body cell mass, 32,19 (20,49-40,95) vs 25,23 (17,83-31,64) kg, p=0,003; total body water, 35,69±1,17 vs 28,58±0,85 kg, p<0,001; dan phase angle 6,18◦(3,73-10,11)◦ vs 3,46◦ (0,40-6,51)◦; , p<0,001. Simpulan. Pada penderita penyakit gastrointestinal dan hati yang dirawat inap dengan status nutrisi baik, memiliki nilai body mass, body cell mass,total body water dan phase angle hasil pemeriksaan BIA yang lebih tinggi dibandingkan dengan penderita malnutrisi.

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The influence of fasting and carbohydrate-enriched drink administration on body water amount and distribution: a volunteer randomized study

Perioperative Medicine ◽

10.1186/s13741-021-00198-0 ◽

2021 ◽

Vol 10 (1) ◽

Author(s):

Jakub Kukliński ◽

Karol P. Steckiewicz ◽

Bartosz Sekuła ◽

Aleksander Aszkiełowicz ◽

Radosław Owczuk

Keyword(s):

Body Composition ◽

Total Body Water ◽

Water Distribution ◽

Enhanced Recovery ◽

Randomized Study ◽

Impedance Analysis ◽

Body Water ◽

Bioelectric Impedance Analysis ◽

Link Type ◽

Total Body

Abstract Background Fasting prior to anesthesia is considered aspiration prophylaxis. However, prolonged food and drink restrictions may increase the risk of other complications. The aim of this study was to assess whether a carbohydrate-enriched drink (Nutricia™ preOp®), recommended by the enhanced recovery after surgery (ERAS) protocol, can improve body hydration in fasting healthy individuals. Methods Measurements were done with the bioelectric impedance analysis with a Fresenius body composition monitor. Body composition, total body water, water distribution, and hemodynamic parameters were measured at the beginning of the study and after 10 h and 12 h of fasting. Patients fasted for 10 h and then were divided into two groups: the control (n = 40) and the pre-op group (n = 41). The pre-op group received 400 mL of Nutricia™ preOp®, as suggested in the ERAS guidance. The two-tailed Student’s t test was used to compare two groups with normally distributed data and homogenous variances; if variances were heterogeneous, Welch’s test was used. The Mann-Whitney U test was used to compare two groups with non-normal data distribution. p < 0.05 was considered statistically significant. Results We found no significant differences between the control and pre-op groups regarding body water distribution and body composition. We did not observe significant losses in the total body water after fasting. Also, blood pressure was not affected by fasting. Conclusion We have proven that pre-op did not impact either body composition or body water. Trial registration ClinicalTrials.gov, NCT04665349. Registered on 11 December 2020—retrospectively registered.

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