Fresenius Medical Care The BCM – Body Composition Monitor allows the detection of overhydration by determining the quantitative amount of excess fluid in. Fresenius Medical Care SUPPORT. For further information on the BCM – Body Composition Monitor, please see the following downloads: General Information. Download scientific diagram | The Fresenius’ Body Composition Monitor (BCM) is an example of multi-frequency Bio-impedance analysis technology. Picture.

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Body Composition Monitor

The data from healthy controls show that there is no difference in BCM-measured OH between all the whole-body paths other than the foot-to-foot measurement, which had a difference of 0. One of the freseniis of preferential removal of fluid from the legs than arms could be that the legs are the last segment that fluid is recruited from.

Healthy controls had height measured using a stadiometer and weight measured using calibrated scales. Practicalities and staffing levels can sometimes make it difficult to carry out all necessary BCM measurements at the same time as putting patients on dialysis, while post-dialysis measurements also allow immediate action to be taken when intradialytic symptoms prompt a review of target weights.

Current opinion in clinical nutrition and metabolic care. Patient characteristics can be seen in table 1. Ethical approval was granted by a local ethics committee and all participants provided informed consent.

Journal of renal care.

Details of model checking can be seen in Appendix 2. There are reasonably large limits of agreement which should be taken into account when making feesenius measurements, but these measurements were taken immediately after dialysis and it is reasonable to assume that they would be reduced if there was a time delay introduced between dialysis end and BCM measurement, as recommended by the manufacturer.


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The BCM validation literature also suggests that a bias is introduced into measurements of LTM and ATM when measurements are made immediately after dialysis but within 30 minutes this becomes non-significant. The effect of utilising alternative measurement paths was assessed using mixed effects models and the effect of measuring post-dialysis was assessed by comparing changes in BCM-measured overhydration OH with weight changes frdsenius dialysis.

Body composition monitor (BCM)

Probing the dry weight by bioimpedance: Does the presence of an arteriovenous fistula alter changes in body water following hemodialysis as determined by multifrequency bioelectrical impedance assessment? This provided equivalent data to the standard BCM device, which was validated by processing standard BCM impedance data with the custom analysis programme and comparing the results with those from the standard BCM see appendix 1.

To examine each model, plots of standardised residuals against fitted values were used to check the assumption of homoscedasticity and a Q-Q plot of the residuals was used to assess normality.

Measurements should also be made from hand-to-foot — as this is the only validated measurement path — and should avoid peripheral access sites, due to the presence of dresenius changes. Use of post-dialysis measurements There was good agreement between change in BCM-measured OH on the reference measurement path [pre-dialysis OH] — [post-dialysis OH] with change in weight fig.

This would suggest that relatively more fluid is recruited from the legs than the upper body which is largely in agreement with previous work.

Preserving central blood volume: The fresenlus device does not display Cole-plots or body composition data to allow real-time assessment of artefacts or consistency, so repeat measurements were not made.

The paths included in the model were limited to the 6 rresenius paths: Significance levels were set at 0. Normal values for segmental bioimpedance spectroscopy in pediatric patients. Pilot work comparing BCM measurements from hand-to-hand and from hand-to-foot showed standard deviations of the mean difference in OH of around 1. Bioimpedance-guided fluid management in hemodialysis patients. BCM-measured OH is greater when measuring across a site of vascular access, but the increase arguably is not clinically significant when the uncertainty in other methods of target weight assessment is considered.


Furthermore, the consistency of LTM and ATM from the start to end of dialysis was assessed based on the effect of measurement time in each of the mixed-effects models. The mortality risk of overhydration in haemodialysis patients.

Body Composition Monitor

Validated alternative pathways would allow measurements to be made on patients who would have otherwise have been managed without BCM or managed based on poor quality data. A whole-body model to distinguish excess fluid from the hydration of major body tissues. To present the data, results for a 60 year old female measured on the standard path acted as a reference standard path was taken as hand-to-foot on the dominant side of the body for controls and on and the contralateral side of the body to the most recently used vascular access VA for dialysis patients.

Accuracy of an eight-point tactile-electrode impedance method in the assessment of total body water. For these models, measurement time was included as a predictor variable to investigate the validity of post-dialysis measurements of LTM and ATM. Measurements of resistance, reactance and phase angle were made at the same 50 frequencies as in the standard BCM, for seventeen combinations of voltage and current see fig.

Bioelectrical impedance analysis–part I: Recruiting 48 subjects into each cohort would allow differences of 0.