Validity of water compartments estimated using bioimpedance spectroscopy in athletes differing in hydration status

2021 ◽  
Author(s):  
Rúben Francisco ◽  
Filipe Jesus ◽  
Tricy Gomes ◽  
Catarina L. Nunes ◽  
Paulo Rocha ◽  
...  
Keyword(s):  
Hydration Status ◽  
Bioimpedance Spectroscopy ◽  
Water Compartments

scholarly journals Validation of Bioimpedance Spectroscopy to Assess Acute Changes in Hydration Status

2007 ◽  
Vol 39 (6) ◽  
pp. 984-990 ◽  
Author(s):  
KAREN J. HIGGINS ◽  
PHYLLIS M. REID ◽  
SCOTT B. GOING ◽  
WANDA H. HOWELL
Keyword(s):  
Hydration Status ◽  
Bioimpedance Spectroscopy ◽  
Acute Changes

scholarly journals A critical evaluation of bioimpedance spectroscopy analysis in estimating body composition during GH treatment: comparison with bromide dilution and dual X-ray absorptiometry

2015 ◽  
Vol 172 (1) ◽  
pp. 21-28 ◽  
Author(s):  
Vita Birzniece ◽  
Chong-Hui Khaw ◽  
Anne E Nelson ◽  
Udo Meinhardt ◽  
Ken K Y Ho
Keyword(s):  
Body Composition ◽  
Critical Evaluation ◽  
Fat Free Mass ◽  
Controlled Study ◽  
Composition Analysis ◽  
Bioimpedance Spectroscopy ◽  
Spectroscopy Analysis ◽  
X Ray ◽  
Treatment Comparison ◽  
Water Compartments

ObjectiveTo compare estimates by bioimpedance spectroscopy analysis (BIS) of extracellular water (ECW), fat mass (FM), and fat-free mass (FFM) against standard techniques of bromide dilution and dual energy X-ray absorptiometry (DXA) during intervention that causes significant changes in water compartments and body composition.MethodsBody composition analysis using BIS, bromide dilution, and DXA was performed in 71 healthy recreational athletes (43 men, 28 women; aged 18–40 years; BMI 24±0.4 kg/m2) who participated in a double-blinded, randomized, placebo-controlled study of GH and testosterone treatment. The comparison of BIS with bromide dilution and DXA was analyzed using linear regression and the Bland–Altman method.ResultsAt baseline, there was a significant correlation between BIS and bromide dilution-derived estimates for ECW, and DXA for FM and FFM (P<0.001). ECW by BIS was 3.5±8.1% lower compared with bromide dilution, while FM was 22.4±26.8% lower and FFM 13.7±7.5% higher compared with DXA (P<0.01). During treatment, the change in ECW was similar between BIS and bromide dilution, whereas BIS gave a significantly greater reduction in FM (19.4±44.8%) and a greater increase in FFM (5.6±3.0%) compared with DXA (P<0.01). Significant differences in body composition estimates between the BIS and DXA were observed only in men, particularly during the treatment that caused greatest change in water compartments and body composition.ConclusionIn healthy adults, bioimpedance spectroscopy is an acceptable tool for measuring ECW; however, BIS overestimates FFM and substantially underestimates FM compared with DXA.

scholarly journals Hydration Status of Patients Dialyzed with Biocompatible Peritoneal Dialysis Fluids

2016 ◽  
Vol 36 (3) ◽  
pp. 257-261 ◽  
Author(s):  
Monika Lichodziejewska-Niemierko ◽  
Michał Chmielewski ◽  
Maria Dudziak ◽  
Alicja Ryta ◽  
Bolesław Rutkowski
Keyword(s):  
Peritoneal Dialysis ◽  
Degradation Products ◽  
Urine Volume ◽  
Residual Renal Function ◽  
Hydration Status ◽  
Bioimpedance Spectroscopy ◽  
Dialysis Fluid ◽  
Dialysis Adequacy ◽  
Stage Renal Disease ◽  
Dialysis Fluids

Background Biocompatible fluids for peritoneal dialysis (PD) have been introduced to improve dialysis and patient outcome in end-stage renal disease. However, their impact on hydration status (HS), residual renal function (RRF), and dialysis adequacy has been a matter of debate. The aim of the study was to evaluate the influence of a biocompatible dialysis fluid on the HS of prevalent PD patients. Methods The study population consisted of 18 prevalent PD subjects, treated with standard dialysis fluids. At baseline, 9 patients were switched to a biocompatible solution, low in glucose degradation products (GDPs) (Balance; Fresenius Medical Care, Bad Homburg, Germany). Hydration status was assessed through clinical evaluation, laboratory parameters, echocardiography, and bioimpedance spectroscopy over a 24-month observation period. Results During the study period, urine volume decreased similarly in both groups. At the end of the evaluation, there were also no differences in clinical (body weight, edema, blood pressure), laboratory (N-terminal pro-brain natriuretic peptide, NTproBNP), or echocardiography determinants of HS. However, dialysis ultra-filtration decreased in the low-GDP group and, at the end of the study, equaled 929 ± 404 mL, compared with 1,317 ± 363 mL in the standard-fluid subjects ( p = 0.06). Hydration status assessed by bioimpedance spectroscopy was +3.64 ± 2.08 L in the low-GDP patients and +1.47 ± 1.61 L in the controls ( p = 0.03). Conclusions The use of a low-GDP biocompatible dialysis fluid was associated with a tendency to overhydration, probably due to diminished ultrafiltration in prevalent PD patients.

scholarly journals The equivalence of hydration status measured by the Fresenius BCM and the Cella Bioimpedance Spectroscopy devices on hemodialysis patients

2021 ◽  
Author(s):  
Jim Matthie ◽  
Borut Baricevic ◽  
Vlasta Malnaric Marentic ◽  
Boris Krajacic
Keyword(s):  
Statistical Power ◽  
Fluid Management ◽  
Hydration Status ◽  
P Value ◽  
Bioimpedance Spectroscopy ◽  
Promising Technique ◽  
Limits Of Agreement ◽  
Body Composition Monitor ◽  
The Mean ◽  
The Difference

AbstractBackgroundFluid management is a serious challenge for patients undergoing hemodialysis therapy (HD). Bioimpedance spectroscopy (BIS) is a promising technique to help with clinical hydration (HYD) assessment. The Fresenius Medical Care (FMC) Body Composition Monitor (BCM) is the standard but is large and expensive. Cella Medical has introduced a small wireless BIS device. This study compared the HYD status predicted by the two devices.MethodsFollowing the FMC BCM device manual guidelines, measurements of BIS were made wrist-ankle using typical ECG electrodes on the non-fistula side of HD patients pre dialysis while in their normal supine position. As usual, patients were measured before their normal time of therapy with the BCM. The Cella measurements were then performed within two minutes.ResultsForty-two HD patients (M=64%, age=64±30 yrs.), were measured. One patient data was removed. The mean BCM HYD status was 1.86 l, SD 1.46 l, and SEM 0.22 l. Cella was 1.806 l, SD 1.36 l, and the SEM 0.21 l. The 95% difference confidence interval (CI) was -0.66 to 0.55 l. The Pearson’s correlation (r) was r^2 = 0.85 (p<0.00001). There was no proportional bias: the offset was -0.056 l, and K=1.010. The limits of agreement (LOA) analysis showed a mean difference of 0.56 l, and limits d ±2SD = (−1.192 l, 1.081 l), indicating 95% of the difference will lie within these limits. To evaluate equivalence, we performed two one-sided t-tests (TOST). When the bounds were reduced to the limit =0.47 l and -0.59 l, we obtained a 0.046 p-value (alpha =0.05), at 80% statistical power. For 26% of the subjects, the difference was <0.1 l, for 43% <0.25 l, for 71% <0.5 l, for 83% <0.75 l, for 90% <1.0 l, and for 9.5% (4 patients) more than 1 l. Only two cases (4.8%) were just over the ±2SD limit.ConclusionThis study suggests the BCM and Cella devices can be used interchangeably.

P1066OBJECTIVIZATION OF “DRY WEIGHT” CLINICAL ASSESSMENT IN HEMODIALYSIS PATIENTS BY MULTI-FREQUENCY BIOIMPEDANCE SPECTROSCOPY WITH VECTOR ANALYSIS

2020 ◽  
Vol 35 (Supplement_3) ◽  
Author(s):  
Konstantin Vishnevskii ◽  
Ekaterina Dudash ◽  
Olga Domashenko ◽  
Olga Volkova ◽  
Elena Turbasova ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Clinical Assessment ◽  
Dry Weight ◽  
Vector Analysis ◽  
Initial Assessment ◽  
Hydration Status ◽  
Control Group ◽  
Bioimpedance Spectroscopy ◽  
Clinical Indicators ◽  
Multifrequency Bioimpedance

Abstract Background and Aims Hydration status is an important prognostic factor in patients receiving hemodialysis (HD). An accurate hydration status assessment and determination of the euvolemia (“dry weight”, DW) target value is a difficult task and need to be objectified by instrumental methods. One of these methods is the vector analysis of multi-frequency bio-impedance spectroscopy (MBIS). The aim of the study was to assess the effect of DW correction according to the results of a vector analysis of MBIS on the blood pressure dynamics and the frequency of intra-dialysis complications. Method Total 104 patients were included in the study. The mean age was 63±11 years, mean duration of renal replacement therapy was 91±68 months. Patients were randomly (block randomization) divided into the study (SG, N=52) or control (CG, N=52) groups. In the SG, the correction of DW performed according to the results of the MBIS vector analysis using the Bodystat MultiScan 5000 analyzer (Bodystat Ltd) with specially developed correction algorithm (figure). In the CG the correction of DW was carried out only according to clinical indicators. Within 3 months before and 3 months after the initial assessment of DW the blood pressure during HD and the number of intradialytic complications were recorded in all patients. Results In the SG, DW was increased in 13 patients by an average of 1.0±0.9 kg, decreased in 26 patients (-1.1±0.7 kg) and did not change in 13 patients. In the CG, DW increased on average by 1.3±0.9 kg in 19 patients, in 27 decreased (-1.2±0.8 kg) and in 2 did not change. In patients who had a history of increased blood pressure during dialysis, in SG the frequency of hypertension episodes decreased from 3.8 to 1.1 episodes per month (p=0.02), in contrast to CG (from 2.4 up to 2.3 episodes per month, p=0.87). Also, among patients initially prone to hypertension in SG, in contrast to CG, a decrease in systolic blood pressure was observed both before the HD (from 163±16 to 143±10 mm Hg, p=0.004) and after the HD (from 151±23 to 130±15 mmHg, p=0.02). No changes in the frequency of episodes of hypotension and diastolic blood pressure during HD were observed either in the study or in the control group Conclusion Objectification of the dry weight clinical assessment of in HD patients using multifrequency bioimpedance spectroscopy with vector analysis can help to reduce the complications rate and arterial hypertension severity.

scholarly journals Validity of Bioimpedance Spectroscopy in the Assessment of Total Body Water and Body Composition in Wrestlers and Untrained Subjects

2020 ◽  
Vol 17 (24) ◽  
pp. 9433
Author(s):  
Keisuke Shiose ◽  
Emi Kondo ◽  
Rie Takae ◽  
Hiroyuki Sagayama ◽  
Keiko Motonaga ◽  
...  
Keyword(s):  
Body Composition ◽  
Total Body Water ◽  
Compartment Model ◽  
Body Water ◽  
Fat Free Mass ◽  
Hydration Status ◽  
Dilution Method ◽  
Bioimpedance Spectroscopy ◽  
Japanese Male ◽  
Total Body

Bioimpedance spectroscopy (BIS) is an easy tool to assess hydration status and body composition. However, its validity in athletes remains controversial. We investigated the validity of BIS on total body water (TBW) and body composition estimation in Japanese wrestlers and untrained subjects. TBW of 49 young Japanese male subjects (31 untrained, 18 wrestlers) were assessed using the deuterium dilution method (DDM) and BIS. De Lorenzo’s and Moissl’s equations were employed in BIS for TBW estimation. To evaluate body composition, Siri’s 3-compartment model and published TBW/fat-free mass (FFM) ratio were applied in DDM and BIS, respectively. In untrained subjects, DDM and BIS with de Lorenzo’s equation showed consistent TBW estimates, whereas BIS with Moissl’s equation overestimated TBW (p < 0.001 vs. DDM). DDM and BIS with de Lorenzo’s equation estimated FFM and percent of fat mass consistently, whereas BIS with Moissl’s equation over-estimated and under-estimated them (p < 0.001 vs. DDM). In wrestlers, BIS with de Lorenzo’s and Moissl’s equations assessed TBW similarly with DDM. However, the Bland–Altman analysis revealed a proportional bias for TBW in BIS with de Lorenzo’s equation (r = 0.735, p < 0.001). Body composition assessed with BIS using both equations and DDM were not different. In conclusion, BIS with de Lorenzo’s equation accurately estimates the TBW and body composition in untrained subjects, whereas BIS with Moissl’s equation is more valid in wrestlers. Our results demonstrated the usefulness of BIS for assessing TBW and body composition in Japanese male wrestlers.

Tracking hydration status changes by bioimpedance spectroscopy in children on peritoneal dialysis

2020 ◽  
pp. 089686082094581
Author(s):  
Vasiliki Karava ◽  
Stella Stabouli ◽  
John Dotis ◽  
Vassilios Liakopoulos ◽  
Fotios Papachristou ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Peritoneal Dialysis ◽  
Hydration Status ◽  
Bioimpedance Spectroscopy ◽  
Z Score ◽  
Weight Changes ◽  
Status Change ◽  
Prospective Longitudinal Study ◽  
Automated Office Blood Pressure ◽  
Prospective Longitudinal

Background: This 6-month prospective longitudinal study investigates the association between hydration status changes using bioimpedance spectroscopy (BIS) and systolic blood pressure (SBP), pulse pressure (PP), and serum albumin (sAlb) changes in children on peritoneal dialysis (PD). Methods: Thirteen patients (median age: 12.58 years) were enrolled. Normal hydration, moderate hydration, severe overhydration, and dehydration were defined as −7% ≤ relative overhydration (Re-OH) < +7%, +7% ≤ Re-OH < +15%, Re-OH ≥ +15%, and Re-OH < −7%, respectively. Automated office blood pressure z-score, sAlb, and weight z-score were recorded. Results: Fifty-two Re-OH measurements were recorded: three in five, four in five, five in two, and seven in one patient, respectively. SBP was higher and sAlb lower in cases with severe overhydration (9 readings) ( p < 0.001, p < 0.001), but distribution of these parameters did not differ between normal hydration/dehydration (28 readings) and moderate overhydration (15 readings) cases. In patients with hydration status change, SBP and PP were higher while sAlb lower in cases with higher hydration status level ( p = 0.026, p = 0.05, and p = 0.109, respectively). In all patients, visit-to-visit SBP, PP, and sAlb changes were correlated to Re-OH changes ( rs = 0.693, p < 0.001; rs = 0.643, p < 0.001; rs = −0.444, p = 0.008, respectively) but not to weight changes ( rs = 0.052, p = 0.754; rs = 0.034, p = 0.838; rs = −0.156, p = 0.378, respectively). Visit-to-visit Re-OH changes, which were >+4% or <−4%, were linearly correlated to SBP ( r = 0.858, p < 0.001), PP ( r = 0.757, p < 0.001), and sAlb ( r = −0.699, p = 0.002) changes. Conclusion: In children on PD, longitudinal Re-OH changes are superior to weight changes in assessing volume-dependent variations of SBP, PP, and sAlb. Routine BIS application, rather than single BIS measurements, seems useful in the intra-patient monitoring of hydration status.

Sign in / Sign up

Export Citation Format

Share Document