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https://www.readbyqxmd.com/read/29348925/volume-estimates-in-chronic-hemodialysis-patients-by-the-watson-equation-and-bioimpedance-spectroscopy-and-the-impact-on-the-kt-vurea-calculation
#1
Nazanin Noori, Ron Wald, Arti Sharma Parpia, Marc B Goldstein
Background: Accurate assessment of total body water (TBW) is essential for the evaluation of dialysis adequacy (Kt/Vurea). The Watson formula, which is recommended for the calculation of TBW, was derived in healthy volunteers thereby leading to potentially inaccurate TBW estimates in maintenance hemodialysis recipients. Bioimpedance spectroscopy (BIS) may be a robust alternative for the measurement of TBW in hemodialysis recipients. Objectives: The primary objective of this study was to evaluate the accuracy of Watson formula-derived TBW estimates as compared with TBW measured with BIS...
2018: Canadian Journal of Kidney Health and Disease
https://www.readbyqxmd.com/read/29348622/a-novel-method-of-utilizing-skinfolds-and-bioimpedance-for-determining-body-fat-percentage-via-a-field-based-three-compartment-model
#2
Michael R Esco, Brett S Nickerson, Michael V Fedewa, Jordan R Moon, Ronald L Snarr
BACKGROUND/OBJECTIVES: The purpose was to determine if skinfolds (SF) and bioelectrical impedance analysis (BIA) could provide accurate estimates of body volume (BV) and total body water (TBW), respectively, for use in a 3-compartment (3-C) model to estimate percent body fat (BF%) when compared to laboratory derived measures. SUBJECTS/METHODS: A sample of sixty-four men (age = 22.9 ± 5.4 years) and 59 women (age = 21.6 ± 4.3 years) participated in the study...
January 18, 2018: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29314721/peritoneal-protein-losses-depend-on-more-than-just-peritoneal-dialysis-modality-and-peritoneal-membrane-transporter-status
#3
Suree Yoowannakul, Lauren S Harris, Andrew Davenport
Peritoneal protein clearance (PPCl) depends upon vascular supply and size selective permeability. Some previous reports suggested PPCl can distinguish fast peritoneal membrane transport due to local or systemic inflammation. However, as studies have been discordant, we wished to determine factors associated with an increased PPCl. Consecutive patients starting peritoneal dialysis (PD) who were peritonitis-free were studied. Data included a baseline peritoneal equilibration test (PET), measurement of dialysis adequacy, 24-h dialysate PPCl and body composition measured by multifrequency bioimpedance...
January 4, 2018: Therapeutic Apheresis and Dialysis
https://www.readbyqxmd.com/read/29243507/hydration-measured-by-doubly-labeled-water-in-als-and-its-effects-on-survival
#4
Connor N Scagnelli, Diantha B Howard, Mark B Bromberg, Edward J Kasarskis, Dwight E Matthews, Hiroshi M Mitsumoto, Zachary Simmons, Rup Tandan
We present a study of hydration in ALS patients and its effects on survival. This was a multicenter study over 48 weeks in 80 ALS patients who underwent 250 individual measurements using doubly labeled water (DLW). Total body water (TBW) and water turnover (a surrogate for water intake) were 3.4% and 8.6% lower, respectively, in patients compared to age- and gender-matched healthy controls, and both significantly decreased over study duration. In 20% of patients, water turnover measured over 10 d was 2 standard deviations below the mean value in healthy controls...
December 15, 2017: Amyotrophic Lateral Sclerosis and Frontotemporal Degeneration
https://www.readbyqxmd.com/read/29241303/body-fluid-status-assessment-by-bio-impedance-analysis-in-patients-presenting-to-the-emergency-department-with-dyspnea
#5
Chan Soon Park, Sang-Eun Lee, Hyun-Jai Cho, Yong-Jin Kim, Hyun-Jae Kang, Byung-Hee Oh, Hae-Young Lee
Background/Aims: Fluid retention occurs in patients with heart failure, accounting for dyspnea. We investigated the diagnostic implication of body fluid status, assessed by bio-impedance analysis (BIA), in acute heart failure (AHF) among patients who presented with dyspnea. Methods: A total of 100 patients who presented with dyspnea and suspected with AHF were analyzed in this study. We enrolled 50 AHF and 50 non-AHF patients discriminated through echocardiographic analysis and Framingham criteria and were matched by age and sex...
December 18, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/29222898/exercise-induced-dehydration-status-and-skinfold-compressibility-in-athletes-an-intervention-study
#6
Daniela Araújo, Vitor Hugo Teixeira, Pedro Carvalho, Teresa F Amaral
BACKGROUND AND OBJECTIVES: Skinfold thickness assessment is a widely recognized technique for the estimation of body adiposity and fat free mass. This method assumes that skinfolds' compressibility is constant but there are some factors that could influence its compressibility. This study aims to evaluate whether the skinfolds' compressibility is influenced by hydration status. METHODS AND STUDY DESIGN: An intervention study was conducted in a sample of 22 adult male amateur soccer players, who took part in a 90min simulated soccer match...
2018: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29170929/the-validity-of-bioelectrical-impedance-analysis-to-measure-body-composition-in-phenylketonuria
#7
Maureen Evans, Kay Nguo, Avihu Boneh, Helen Truby
AIM: To compare the measurement of total body water (TBW) and fat-free mass (FFM) using the criterion method of deuterium dilution space ((2)H2O) with bioelectrical impedance analysis (BIA) using a portable QuadScan 4000, Bodystat(®) in children and adolescents with phenylketonuria (PKU). METHODS: Sixteen patients with PKU, median age is 12.5 (range 5-20.6) years, were recruited into this cross-sectional study. TBW was measured by both deuterium dilution and BIA on the same occasion as per a standard protocol...
November 24, 2017: JIMD Reports
https://www.readbyqxmd.com/read/29170709/effects-of-heat-exposure-on-body-water-assessed-using-single-frequency-bioelectrical-impedance-analysis-and-bioimpedance-spectroscopy
#8
Brett S Nickerson, Michael R Esco, Phillip A Bishop, Brian M Kliszczewicz, Henry N Williford, Kyung-Shin Park, Bailey A Welborn, Ronald L Snarr, Danilo V Tolusso
The purpose of this study was to determine if heat exposure alters the measures of total body water (TBW), extracellular water (ECW), and intracellular water (ICW) in both single-frequency bioelectrical impedance analysis (BIA) and bioimpedance spectroscopy (BIS). Additionally, we sought to determine if any differences exist between the BIA and BIS techniques before and after brief exposure to heat. Body water was evaluated for twenty men (age=24±4 years) in a thermoneutral environment (22°C) before (PRE) and immediately after (POST) 15 min of passive heating (35°C) in an environmental chamber...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/29158619/the-effect-of-mineral-based-alkaline-water-on-hydration-status-and-the-metabolic-response-to-short-term-anaerobic-exercise
#9
Jakub Chycki, Tomasz Zając, Adam Maszczyk, Anna Kurylas
Previously it was demonstrated that mineralization and alkalization properties of mineral water are important factors influencing acid-base balance and hydration in athletes. The purpose of this study was to investigate the effects of drinking different types of water on urine pH, specific urine gravity, and post-exercise lactate utilization in response to strenuous exercise. Thirty-six male soccer players were divided into three intervention groups, consuming around 4.0 l/day of different types of water for 7 days: HM (n=12; highly mineralized water), LM (n=12; low mineralized water), and CON (n=12; table water)...
September 2017: Biology of Sport
https://www.readbyqxmd.com/read/29158062/effect-of-change-in-fluid-status-evaluated-by-bioimpedance-techniques-on-body-composition-in-hemodialysis-patients
#10
Samer R Abbas, Stephan Thijssen, Erik L Penne, Jochen G Raimann, Li Liu, Murat H Sipahioglu, Eric Seibert, Yuedong Wang, Yuqi Chen, Qingqing Xiao, Nathan W Levin, Peter Kotanko, Fansan Zhu
OBJECTIVE: This prospective study uses calf bioimpedance spectroscopy (cBIS) to guide the attainment of dry weight (DWcBIS) in chronic hemodialysis (HD) patients. The primary aim of this study was to evaluate whether body composition is altered when fluid status is reduced to DWcBIS. METHODS: Target post-HD weight was gradually reduced from baseline (BL) until DWcBIS was achieved. DWcBIS was defined as the presence of both flattening of the curve of extracellular resistance and the attainment calf normalized resistivity in the normal range during the dialysis treatment...
November 18, 2017: Journal of Renal Nutrition
https://www.readbyqxmd.com/read/29153665/correlation-between-maternal-body-composition-and-haemodynamic-changes-in-pregnancy-different-profiles-for-different-hypertensive-disorders
#11
I Pisani, G M Tiralongo, D Lo Presti, G Gagliardi, D Farsetti, B Vasapollo, G P Novelli, A Andreoli, H Valensise
OBJECTIVES: To assess and correlate changes in body composition and haemodynamic function during pregnancy. To identify different haemodynamic profiles based on the onset of hypertensive diseases such as gestational hypertension and preeclampsia. METHODS: We enrolled 265 healthy, normotensive pregnant women throughout pregnancy (from 6+0 to 36+0weeks). They were subjected to assessment of body composition and haemodynamic function using non-invasive methods. We divided our population in three groups: group A with physiological pregnancy, group B with gestational hypertension and group C with preeclamptic patients...
October 2017: Pregnancy Hypertension
https://www.readbyqxmd.com/read/29150589/change-in-hydration-indices-associated-with-an-increase-in-total-water-intake-of-more-than-0-5%C3%A2-l-day-sustained-over-4%C3%A2-weeks-in-healthy-young-men-with-initial-total-water-intake-below-2%C3%A2-l-day
#12
Jodi D Stookey, Janice Hamer, David W Killilea
This secondary data analysis addressed gaps in knowledge about effects of chronic water intake. Longitudinal data from the Adapt Study were used to describe effects of prescribing a sustained increase in water intake relative to baseline, for 4 weeks, on multiple indices of total body water (TBW) flux, regulation, distribution, and volume in five healthy, free-living, young men, with mean total water intake initially below 2 L/day. Indices were measured weekly. Within-person fixed effect models tested for significant changes in indices over time and associations between changes in indices...
November 2017: Physiological Reports
https://www.readbyqxmd.com/read/29115801/the-relationship-between-the-vitamin-serum-25-oh-d-and-the-b12-concentrations-in-obese-women
#13
Nikola Curic, Branislava Ilincic, Natasa Milic, Velibor Cabarkapa, Stanislava Nikolic, Milica Medic-Stojanoska, Rinaldo Pellicano, Ludovico Abenavoli
BACKGROUND: In obesity, low levels of vitamin D (VD) and vitamin B12 (VB12), may be the result of different pathophysiological mechanisms, but the possible association between them has not yet been defined. The aim of this cross-sectional analysis was to investigate the possible relationship between serum 25-hydroxyvitamin D (25(OH)D) and VB12 levels in middle aged women. METHODS: In 80 women, we indirectly evaluated body composition and body volumes [extracellular fluid volume (ECV) and total body water (TBW)] by anthropometric and bioelectrical impedance analysis...
November 7, 2017: Minerva Medica
https://www.readbyqxmd.com/read/29068599/body-composition-in-13-year-old-adolescents-with-abdominal-obesity-depending-on-the-bmi-value
#14
Zuzanna S Goluch-Koniuszy, Magdalena Kuchlewska
BACKGROUND: Excessive adipocyte growth during the pubertal transition predisposes to the development and persistence of obesity in adulthood. Visceral accumulation of body fat is particularly disadvantageous when it is correlated with insulin resistance, secondary hyperinsulinaemia, dysglicaemia, and atherogenic dyslipidemia. OBJECTIVES: The aim of this study was to conduct a nutritional status assessment and body composition analysis in 13-year-old adolescents of both genders with visceral fat accumulation (WC ≥ 90th percentile) and different BMI values...
September 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/29060136/estimation-of-peripheral-blood-volume-and-interstitial-volume-in-hemodialysis-patients-using-bioimpedance-techniques
#15
Fansan Zhu, Peter Kotanko, Nathan W Levin
This paper describes a method to estimate interstitial fluid volume and peripheral blood volume (BVP) in hemodialysis (HD) patients using whole body (wBIS) and calf (cBIS) bioimpedance spectroscopy techniques. The aim of this study was to evaluate the usefulness of the technique. Thirty five HD patients were studied pre and post HD. Extracellular volume (ECV) and total body water (TBW) were measured using wBIS and cBIS. The calf resistances at 5 kHz (R5) and at 1000 kHz (R1000) respectively reflect ECV and TBW in the calf...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29035594/total-body-water-dynamics-estimated-with-bioelectrical-impedance-vector-analysis-and-b-type-natriuretic-peptide-after-exposure-to-hypobaric-hypoxia-a-field-study
#16
Giacomo Strapazzon, Matiram Pun, Tomas Dal Cappello, Emily Procter, Piergiorgio Lochner, Hermann Brugger, Antonio Piccoli
Strapazzon, Giacomo, Matiram Pun, Tomas Dal Cappello, Emily Procter, Piergiorgio Lochner, Hermann Brugger, and Antonio Piccoli. Total body water dynamics estimated with bioelectrical impedance vector analysis and B-type natriuretic peptide after exposure to hypobaric hypoxia: A field study. High Alt Med Biol. 18:000-000, 2017.-The relationship between total body water (TBW) dynamics and N-terminal pro-B-type natriuretic peptide (NT-proBNP), a stable metabolite of B-type natriuretic peptide, during acute high altitude exposure is not known...
October 16, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28971467/bioimpedance-measurements-in-adolescents-with-polycystic-ovary-syndrome-a-pilot-study
#17
Styliani A Geronikolou, Flora Bacopoulou, Dennis Cokkinos
Limited data are available on the body composition of adolescent women with polycystic ovary syndrome (PCOS). The aim of this study was to examine differences in body composition indices of metabolism, homeostasis and inflammation, between Greek adolescent females suffering from PCOS and age- and body mass index (BMI)-matched non-PCOS controls. Thirteen PCOS patients and nine non-PCOS controls, aged 13-24 years participated in this cross-sectional study. Study participants underwent assessment by a novel dual frequency bioimpedance device (BIA-ACC)...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28880151/salivary-markers-for-quantitative-dehydration-estimation-during-physical-exercise
#18
Matthias Ring, Clemens Lohmueller, Manfred Rauh, Joachim Mester, Bjoern M Eskofier
Salivary markers have been proposed as noninvasive and easy-to-collect indicators of dehydrations during physical exercise. It has been demonstrated that threshold-based classifications can distinguish dehydrated from euhydrated subjects. However, considerable challenges were reported simultaneously, for example, high intersubject variabilities in these markers. Therefore, we propose a machine-learning approach to handle the intersubject variabilities and to advance from binary classifications to quantitative estimations of total body water (TBW) loss...
September 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28830412/body-composition-and-personality-traits-in-so-yang-type-males
#19
Jiwon Yoon, Jiho Nam, Chae Hun Leem, Jong Yeol Kim
BACKGROUND: The purpose of the present study was to examine the body composition of So-Yang type males according to Sasang constitutional medicine, which is popular in Korea. Different Sasang constitutional types are associated with different muscle distributions, body shapes, and disease susceptibilities. We used the Sasang Personality Questionnaire (SPQ) as a measure of the temperament of each Sasang type. METHODS: In total, 953 subjects aged over 20 years were recruited in Korea...
August 22, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28829810/extracellular-overhydration-linked-with-endothelial-dysfunction-in-the-context-of-inflammation-in-haemodialysis-dependent-chronic-kidney-disease
#20
Nicos Mitsides, Tom Cornelis, Natascha J H Broers, Nanda M P Diederen, Paul Brenchley, Frank M van der Sande, Casper G Schalkwijk, Jeroen P Kooman, Sandip Mitra
BACKGROUND: Haemodialysis (HD) patients are predisposed to dysregulated fluid balance leading to extracellular water (ECW) expansion. Fluid overload has been closely linked with outcome in these patients. This has mainly been attributed to cardiac volume overload, but the relation between abnormalities in fluid status with micro- and macrovascular dysfunction has not been studied in detail. We studied the interaction of macro- and microvascular factors in states of normal and over- hydration in HD-dependent CKD...
2017: PloS One
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