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"Total body water"

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https://www.readbyqxmd.com/read/28089477/bioimpedance-and-fluid-status-in-children-and-adolescents-treated-with-dialysis
#1
Gregorio P Milani, Jaap W Groothoff, Federica A Vianello, Emilio F Fossali, Fabio Paglialonga, Alberto Edefonti, Carlo Agostoni, Dario Consonni, Dewi van Harskamp, Johannes B van Goudoever, Henk Schierbeek, Michiel J S Oosterveld
BACKGROUND: Assessment of hydration status in patients with chronic kidney failure treated by dialysis is crucial for clinical management decisions. Dilution techniques are considered the gold standard for measurement of body fluid volumes, but they are unfit for day-to-day care. Multifrequency bioimpedance has been shown to be of help in clinical practice in adults and its use in children and adolescents has been advocated. We investigated whether application of multifrequency bioimpedance is appropriate for total-body water (TBW) and extracellular water (ECW) measurement in children and adolescents on dialysis therapy...
January 12, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28079262/pediatric-obesity-pharmacokinetic-alterations-and-effects-on-antimicrobial-dosing
#2
Stephanie Natale, John Bradley, William Huy Nguyen, Tri Tran, Pamela Ny, Kirsten La, Eva Vivian, Jennifer Le
BACKGROUND: Limited data exist for appropriate drug dosing in obese children. This comprehensive review summarizes pharmacokinetic alterations that occur with age and obesity, and these effects on antimicrobial dosing. A thorough comparison of different measures of body weight and specific antimicrobial agents, including cefazolin, cefepime, ceftazidime, daptomycin, doripenem, gentamicin, linezolid, meropenem, piperacill-tazobactam, tobramycin, vancomycin, and voriconazole, are presented...
January 12, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/28074616/is-hemodialysis-patient-survival-dependent-upon-small-solute-clearance-kt-v-if-so-how-can-kt-v-be-adjusted-to-prevent-under-dialysis-in-vulnerable-groups
#3
Andrew Davenport
Small solute clearance achieved during a single hemodialysis session has been traditionally evaluated by urea clearance, normalized for total body water (Kt/Vurea) for more than 30 years. By consensus, the target sessional KtVurea for thrice weekly treatments has been increased from 0.9 to 1.2 over the years. Although this is supported by observational studies, there is a fundamental lack of prospective studies to support this threshold target. In clinical practice achieving sessional Kt/Vurea targets are most closely followed in the US...
January 11, 2017: Seminars in Dialysis
https://www.readbyqxmd.com/read/28033125/validity-of-bmi-based-body-fat-equations-in-men-and-women-a-four-compartment-model-comparison
#4
Brett S Nickerson, Michael R Esco, Phillip A Bishop, Michael V Fedewa, Ronald L Snarr, Brian M Kliszczewicz, Kyung-Shin Park
The purpose of this study was to compare body mass index (BMI)-based body fat percentage (BF%) equations and skinfolds to a four-compartment (4C) model in men and women. One hundred and thirty adults (63 women and 67 men) volunteered to participate (age = 23±5 years). BMI was calculated as weight (kg) divided by height squared (m). BF% was predicted with the BMI-based equations of Jackson et al. (BMIJA), Deurenberg et al. (BMIDE), Gallagher et al. (BMIGA), Zanovec et al. (BMIZA), Womersley and Durnin (BMIWO) and from 7-site skinfolds using the generalized skinfold equation of Jackson et al...
December 20, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27958252/comparison-of-the-body-compositions-in-obese-and-nonobese-individuals-can-learning-body-compositions-motivate-losing-weight
#5
R Kutlu, F G Cihan
BACKGROUND: Obesity is one of the leading preventable causes of death worldwide. OBJECTIVE: To compare body compositions in obese and nonobese individuals. METHODS: This cross-sectional study constituted of 428 individuals. Body compositions were determined using the Tanita. RESULTS: Of all the participants, 300 (70.1%) were female. The prevalence of overweight and obesity was 30.8% and 47.7%, respectively. Having low educational level, female gender, not working, being married, and nonsmoker significantly increased more in obese than nonobese (P < 0...
January 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/27925328/screening-for-preeclampsia-in-the-first-trimester-the-usefulness-of-maternal-hemodynamics-and-bioimpedence-in-non-obese-patients
#6
Giulia Gagliardi, Grazia Maria Tiralongo, Damiano Lo Presti, Ilaria Pisani, Daniele Farsetti, Barbara Vasapollo, Gian Paolo Novelli, Angela Andreoli, Herbert Valensise
OBJECTIVE: To test if maternal hemodynamics, and bioimpedance, together with the Combined Screening (maternal history, biophysical and biochemical markers), are able to identify normotensive non-obese patients at risk for preeclampsia (PE) and/or intrauterine growth restriction (IUGR) in the first trimester of gestation. METHODS: 150 healthy nulliparous non-obese women (BMI<30Kg/m(2) ) were enrolled in the study in the first trimester of pregnancy and submitted to USCOM to detect hemodynamic parameters, bioimpedence to characterize body composition, and combined screening for preeclampsia (maternal history, biophysical and maternal biochemical markers)...
December 7, 2016: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27924959/effects-of-ramadan-fasting-on-body-composition-and-arterial-stiffness
#7
Yusuf Sezen, Ibrahim Halil Altiparmak, Muslihittin Emre Erkus, Aydemir Kocarslan, Zekeriya Kaya, Ozgur Gunebakmaz, Recep Demirbag
OBJECTIVE: To examine the effects of Ramadan fasting on body composition, arterial stiffness and resting heart rate. METHODS: This prospective study was conducted at the Department of Cardiology, Harran University, Sanliurfa, Turkey, during Ramadan 2015, and comprised overweight and obese males. Body composition, arterial stiffness and echocardiography were assessed before and after Ramadan. Body composition was assessed by bioelectrical impedance analysis using segmental body composition analyser...
December 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/27898642/manipulation-of-muscle-creatine-and-glycogen-changes-dxa-estimates-of-body-composition
#8
Julia L Bone, Megan L Ross, Kristyen A Tomcik, Nikki A Jeacocke, Will G Hopkins, Louise M Burke
: Standardising a dual x-ray absorptiometry (DXA) protocol is thought to provide a reliable measurement of body composition. PURPOSE: We investigated the effects of manipulating muscle glycogen and creatine content independently and additively on DXA estimates of lean mass. METHOD: Eighteen well-trained male cyclists undertook a parallel group application of creatine loading (n=9) (20 g/d for 5 d loading; 3 g/d maintenance) or placebo (n=9) with crossover application of glycogen loading (12 v 6 g/kg BM/d for 48 h) as part of a larger study involving a glycogen-depleting exercise protocol...
November 28, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27892802/longitudinal-changes-and-correlations-of-bioimpedance-and-anthropometric-measurements-in-pregnancy-simple-possible-bed-side-tools-to-assess-pregnancy-evolution
#9
Gabriele Piuri, Enrico Ferrazzi, Camilla Bulfoni, Luciana Mastricci, Daniela Di Martino, Attilio Francesco Speciani
PURPOSE: The aim of this study was to assess longitudinal changes of bioimpedance analysis compared with anthropometric measurements in low-risk pregnant woman recruited in the first trimester and to observe possible differences in these indices in women who developed high-risk pregnancies. MATERIALS AND METHODS: Bioimpedance indices for the three trimesters of pregnancies were calculated separately for uneventful pregnancies delivered of newborns > the 10th centile...
December 14, 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27885225/the-physical-signs-of-impending-dehydration-among-elderly-people-in-nursing-homes-the-association-with-axillary-skin-temperature-humidity-intraoral-moisture-content-and-salivary-components
#10
Mayumi Okuyama, Masumi Nishida
PURPOSE: The aim of the present study was to examine the association between impending dehydration among elderly people in nursing homes and physical signs, including the axillary skin temperature, humidity, intraoral moisture content, and salivary components. METHODS: The study included 78 elderly individuals who required long-term care in a nursing home (11 men and 67 women; average age, 86.6±7.3 years). The elderly subjects were classified in two groups according to their serum osmolality levels: those with levels between the upper limit reference value (292 mOsm/kg H2O) and the diagnostic reference value of dehydration (300 mOsm/kg H2O) were classified into the boundary zone group and those with levels of <292 mOsm/kg H2O were classified into the normal range group...
2016: Nihon Ronen Igakkai Zasshi. Japanese Journal of Geriatrics
https://www.readbyqxmd.com/read/27875499/impact-of-acute-dietary-manipulations-on-dxa-and-bia-body-composition-estimates
#11
Grant M Tinsley, Flor E Morales, Jeffrey S Forsse, Peter W Grandjean
PURPOSE: To examine the effects of acute pre-assessment diets on body composition estimates obtained by dual-energy x-ray absorptiometry (DXA) and bioelectrical impedance analysis (BIA). METHODS: In a counterbalanced design, 48 males and females were provided with two one-day diets: high-carbohydrate diet (9 g CHO/kg) and very low-carbohydrate diet (1 to 1.5 g CHO/kg). For each condition, body composition was assessed in the morning after an overnight fast, in the afternoon after feeding, and the following morning after a second overnight fast...
November 21, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27861264/use-of-b-mode-ultrasound-as-a-body-fat-estimate-in-collegiate-football-players
#12
Parker N Hyde, Kristina L Kendall, Ciaran M Fairman, Nicholas A Coker, Mary E Yarbrough, Steve J Rossi
Hyde, PN, Kendall, KL, Fairman, CM, Coker, NA, Yarbrough, ME, and Rossi, SJ. Utilization of B-mode ultrasound as a body fat estimate in collegiate football players. J Strength Cond Res 30(12): 3525-3530, 2016-The purpose of the present study was to validate a 7-site ultrasound imaging protocol to predict the percent body fat (%BF) in a division I football team. Body composition was estimated by ultrasound, 7-site skinfolds, and the 3-compartment-water (3C-W) model of Siri, using bioimpedance spectroscopy to estimate the total body water and air displacement plethysmography (using BODPOD) to determine the body density...
December 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27853064/impact-of-the-8-week-administration-of-tofogliflozin-for-glycemic-control-and-body-composition-in-japanese-patients-with-type-2-diabetes-mellitus
#13
Sachie Hirose, Shinsuke Nakajima, Yasuyuki Iwahashi, Akane Seo, Tetsuya Takahashi, Yoshikazu Tamori
Objective The adverse effects of selective sodium-glucose co-transporter 2 (SGLT2) inhibitors generally appear within about two or three months after treatment initiation in Japan. Therefore, we investigated the impact of tofogliflozin, a class of SGLT2 inhibitors, on glycemic control and body composition during this period in Japanese patients with type 2 diabetes mellitus. Methods This single-arm open-label study enrolled 20 patients. Patients received tofogliflozin 20 mg once daily for 8 weeks. At week 8, changes from baseline in body weight, serum metabolic markers, and body composition were evaluated...
2016: Internal Medicine
https://www.readbyqxmd.com/read/27832647/extracellular-volume-overload-and-increased-vasoconstriction-in-patients-with-recurrent-intradialytic-hypertension
#14
Peter Noel Van Buren, Yunyun Zhou, Javier A Neyra, Guanghua Xiao, Wanpen Vongpatanasin, Jula Inrig, Robert Toto
BACKGROUND/AIMS: Intradialytic hypertension (IH) occurs frequently in some hemodialysis patients and increases mortality risk. We simultaneously compared pre-dialysis, post-dialysis and changes in extracellular volume and hemodynamics in recurrent IH patients and controls. METHODS: We performed a case-control study among prevalent hemodialysis patients with recurrent IH and hypertensive hemodialysis controls. We used bioimpedance spectroscopy and impedance cardiography to compare pre-dialysis, post-dialysis, and intradialytic change in total body water (TBW) and extracellular water (ECW), as well as cardiac index (CI) and total peripheral resistance index (TPRI)...
2016: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/27830333/hooded-seal-cystophora-cristata-pups-ingest-snow-and-seawater-during-their-post-weaning-fast
#15
Pauke C Schots, Marie E Bue, Erling S Nordøy
The purpose of this study was to evaluate the importance of exogenous water intake (snow/seawater) in hooded seal (Cystophora cristata) pups during their post-weaning fast. In this study, five hooded seal pups had ad lib access to snow and seawater for the first 12 and last 21 days of their post-weaning fast, respectively. Total body water and water flux were determined during both exposure periods by use of the tritiated water method. Blood samples were collected to monitor changes in hematocrit, plasma urea and plasma osmolality...
November 9, 2016: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
https://www.readbyqxmd.com/read/27828939/determinants-of-body-composition-in-breastfed-infants-using-bioimpedance-spectroscopy-and-ultrasound-skinfolds-methods-comparison
#16
Zoya Gridneva, Anna R Hepworth, Leigh C Ward, Ching T Lai, Peter E Hartmann, Donna T Geddes
BACKGROUND: Accurate, noninvasive, and inexpensive methods are required to measure infant body composition. Ultrasound (US) and bioimpedance spectroscopy (BIS) have been validated in adults and introduced in pediatric populations. The aim of this study was to evaluate the performance of both methods in determining percentage fat mass (%FM) in breastfed infants. METHODS: %FM of 2, 5, 9, and 12 mo-old healthy, breastfed term infants (n = 58) was calculated using BIS-derived total body water equations and skinfold equations then compared with reference models...
December 21, 2016: Pediatric Research
https://www.readbyqxmd.com/read/27822564/design-of-a-randomized-controlled-clinical-trial-assessing-dietary-sodium-restriction-and-hemodialysis-related-symptom-profiles
#17
Maya N Clark-Cutaia, Marilyn S Sommers, Emily Anderson, Raymond R Townsend
AIM: In hemodialysis patients, the need to have intercurrent sodium and water intake removed by ultrafiltration increases disease burden through the symptoms and signs that occur during hemodialysis (HD). This added burden may be mitigated by reduction of dietary sodium intake. The National Kidney Foundation (NKF) recommends 2400 mg of dietary sodium daily for patients on HD, and the American Heart Association (AHA) suggests 1500 mg, evidence is lacking, however, to support these recommendations in HD...
August 15, 2016: Contemporary Clinical Trials Communications
https://www.readbyqxmd.com/read/27806008/impact-of-measured-vs-predicted-residual-lung-volume-on-body-fat-percentage-via-underwater-weighing-and-four-compartment-model
#18
Brett S Nickerson, Michael R Esco, Phillip A Bishop, Randall E Schumacker, Mark T Richardson, Michael V Fedewa, Jonathan E Wingo, Bailey A Welborn
The purpose of this study was to compare underwater weighing (UWW) and four-compartment (4C) model body fat percentage (BF%) for predicted vs. simultaneously measured residual lung volume (RLV). Forty-seven women and thirty-three men (age=22±5 years) had UWW and 4C model BF% determined using Boren et al. (RLVBOREN), Goldman and Becklake (RLVGB), and Miller et al. (RLVMILLER) RLV prediction equations. Criterion UWW BF% included body density (BD) values with simultaneous RLV. Criterion 4C model BF% included BD via UWW with simultaneous RLV, total body water via bioimpedance spectroscopy, and bone mineral content via dual energy x-ray absorptiometry...
October 27, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27798648/association-of-fluid-status-and-body-composition-with-physical-function-in-patients-with-chronic-kidney-disease
#19
Shih-Ming Hsiao, Yi-Chun Tsai, Hui-Mei Chen, Ming-Yen Lin, Yi-Wen Chiu, Tzu-Hui Chen, Shu-Li Wang, Pei-Ni Hsiao, Lan-Fang Kung, Shang-Jyh Hwang, Mei-Feng Huang, Yi-Chun Yeh, Cheng-Sheng Chen, Mei-Chuan Kuo
BACKGROUND: Impairment of physical function and abnormal body composition are the major presentations in patients with chronic kidney disease (CKD). The aim of this study is to investigate the relationship between body composition and physical function in CKD patients. METHODS: This cross-sectional study enrolled 172 of CKD stages 1-5 from February 2013 to September 2013. Handgrip strength (upper extremity muscle endurance), 30-second chair-stand test (lower extremity muscle endurance) and 2-minute step test (cardiorespiratory endurance) were used as indices of physical function...
2016: PloS One
https://www.readbyqxmd.com/read/27793064/hypertrophy-type-resistance-training-improves-phase-angle-in-young-adult-men-and-women
#20
A S Ribeiro, A Avelar, L Dos Santos, A M Silva, L A Gobbo, B J Schoenfeld, L B Sardinha, E S Cyrino
The main purpose of the present study was to investigate the effect of a hypertrophy-type resistance training protocol on phase angle, an indicator of cellular integrity, in young adult men and women. 28 men (22.2±4.3 years, 67.8±9.0 kg and 174.2±6.8 cm) and 31 women (23.2±4.1 years, 58.7±12.1 kg and 162.7±6.4 cm) underwent a progressive RT for 16 weeks (2 phases, 8 weeks each), 3 times per week, consisting of 10 to 12 whole body exercises with 3 sets of 8-12 repetitions maximum. Phase angle, resistance, reactance and total body water (intra and extracellular water compartments) were assessed by bioimpedance spectroscopy (Xitron 4200 Bioimpedance Spectrum Analyzer)...
January 2017: International Journal of Sports Medicine
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