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Bioimpedance

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https://www.readbyqxmd.com/read/28817729/comparison-of-bioimpedance-spectroscopy-and-x-ray-micro-computed-tomography-for-total-fat-volume-measurement-in-mice
#1
Gaelle Aubertin, Amira Sayeh, Jean-Philippe Dillenseger, Estelle Ayme-Dietrich, Philippe Choquet, Nathalie Niederhoffer
Obesity and the metabolic syndrome are two pathologies whose prevalence are in a constant increase. Evaluation of the total fat mass but also of the distribution between visceral and subcutaneous adipose tissue are important factors while assessing the pathophysiology of these two pathologies. Computed tomography (CT) and bioimpedance (BIS) are the translational methods the most frequently used in human beings as well as in rodent models in longitudinal studies on adiposity and obesity. Surprisingly, no direct comparison of micro-CT and BIS was reported yet in mice...
2017: PloS One
https://www.readbyqxmd.com/read/28811317/sleep-duration-and-risk-of-type-2-diabetes
#2
Alicja R Rudnicka, Claire M Nightingale, Angela S Donin, Naveed Sattar, Derek G Cook, Peter H Whincup, Christopher G Owen
BACKGROUND: Associations between sleep duration and type 2 diabetes (T2D) risk markers in childhood have been little studied. We examined associations between self-reported sleep duration and T2D risk markers in children. METHODS: Cross-sectional study of 4525 multiethnic UK children aged 9 to 10 years. Sleep time was calculated from self-reported usual time of going to bed and getting up on a school day, validated in a subset using accelerometers. Fasting blood samples provided levels of serum lipids and insulin, plasma glucose, and HbA1c...
August 15, 2017: Pediatrics
https://www.readbyqxmd.com/read/28803515/protocol-driven-remote-monitoring-of-cardiac-resynchronization-therapy-as-part-of-a-heart-failure-disease-management-strategy
#3
Christophe J P Smeets, Frederik H Verbrugge, Julie Vranken, Jo Van der Auwera, Wilfried Mullens, Matthias Dupont, Lars Grieten, Hélène De Cannière, Dorien Lanssens, Thijs Vandenberk, Valerie Storms, Inge M Thijs, Pieter Vandervoort
BACKGROUND: Cardiac resynchronisation therapy (CRT) is an established treatment for heart failure (HF) with reduced ejection fraction. CRT devices are equipped with remote monitoring functions, which are pivotal in the detection of device problems, but may also facilitate disease management. The aim of this study was to provide a comprehensive overview of the clinical interventions taken based on remote monitoring. METHODS: This is a single centre observational study of consecutive CRT patients (n = 192) participating in protocol-driven remote follow-up...
August 14, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28796425/comparison-of-stroke-volume-measurements-during-hemodialysis-using-bioimpedance-cardiography-and-echocardiography
#4
Michael J Germain, Jyovani Joubert, Daniel O'Grady, Brian H Nathanson, Yossi Chait, Nathan W Levin
BACKGROUND: Fluid management remains a major challenge of hemodialysis (HD) care, with serious implications for morbidity and mortality. Intradialytic fluid management is typically guided by blood pressure, an indirect resultant of hemodynamics status. Direct measurements of hemodynamic parameters may improve cardiovascular outcomes by providing rational bases for intervention. We compare stroke volume (SV) measurements using a noninvasive, regional biompedance cardiography device (NiCaS) with Doppler echocardiography (Echo) in HD setting...
August 10, 2017: Hemodialysis International
https://www.readbyqxmd.com/read/28795535/update-on-postdialysis-rebound-by-a-new-technology-in-hemodialysis
#5
Alicia García Testal, David Hervás Marín, Rafael García Maset, Pilar Royo Maicas, Inmaculada Soledad Rico Salvador, Pau Olagüe Díaz, Jose Enrique Fernández Najera, Eduardo Torregrosa De Juan, Caterina Benedito Carrera
After dialysis ends, urea continued movement causes rebound postdialysis, with values at about 20%. New techniques have been incorporated into hemodialysis, but their relationship with rebound has not yet been studied. This study aimed to quantify urea rebound at 30-min postdialysis during sessions using polysulfone filters and high-flow versus online hemodiafiltration, and to define its correlation with body composition measured by bioimpedance by a cross-sectional study with 69 patients (December 2015 to January 2016)...
August 9, 2017: Therapeutic Apheresis and Dialysis
https://www.readbyqxmd.com/read/28795491/role-of-handedness-on-forearm-skin-tissue-dielectric-constant-tdc-in-relation-to-detection-of-early-stage-breast-cancer-related-lymphedema
#6
Harvey N Mayrovitz, Madeline Fasen, Paige Spagna, Jennifer Wong
skin tissue dielectric constant (TDC) measurements help assess local skin water to detect incipient early-stage lymphedema subsequent to breast cancer treatment-related lymphedema. However, presurgery measurements are not always obtained and assessments for evolving lymphedema are only made after surgery. Thus, subsequent TDC assessments may be biased in an unknown way dependent on a patient's handedness in relation to the at-risk arm. We investigated this issue by comparing TDC values in dominant and non-dominant volar forearms of 31 left-handed women and 31 right-handed women (age range 24-84 years)...
August 10, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28781137/bioimpedance-spectroscopy-a-technique-to-monitor-interventions-for-swelling-in-minor-burns
#7
Pippa Kenworthy, Tiffany L Grisbrook, Michael Phillips, Paul Gittings, Fiona M Wood, William Gibson, Dale W Edgar
The control of edema in burn injured patients is a priority as it can impede the wound healing process. Bioimpedance spectroscopy (BIS) has been identified as a method of swelling assessment that has merit after burns. The aim of this study was to examine the reliability and validity of BIS in the measurement of localised burn wound edema across (1) different dressing conditions (no dressing, non silver and silver dressings) and (2) three electrode positions. BIS resistance (R) was hypothesised to be inversely proportional to fluid (edema) volume...
August 3, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28777805/relationship-between-alcohol-drinking-and-arterial-hypertension-in-indigenous-people-of-the-mura-ethnics-brazil
#8
Alaidistania Aparecida Ferreira, Zilmar Augusto Souza-Filho, Maria Jacirema F Gonçalves, Juliano Santos, Angela Maria G Pierin
OBJECTIVE: To identify the consumption of alcoholic beverage and the relation with hypertension, their prevalence and associated factors, in indigenous Mura, Brazil. METHODS: A cross-sectional population-based study was conducted with 455 adult indigenous aged 18 years or more of Mura ethnics in Amazonia, Brazil. Interview was conducted and the alcohol intake was assessed by the Alcohol Use Disorders Identification Test. Blood pressure was measured in three measurements and the mean of the last two measurements was used...
2017: PloS One
https://www.readbyqxmd.com/read/28775375/the-relationship-between-maternal-25-hydroxyvitamin-d-status-in-pregnancy-and-childhood-adiposity-and-allergy-an-observational-study
#9
V T Boyle, E B Thorstensen, J M D Thompson, L M E McCowan, E A Mitchell, K M Godfrey, L Poston, C R Wall, R Murphy, W Cutfield, T Kenealy, L C Kenny, P N Baker
BACKGROUND: Vitamin D insufficiency (defined as <75 nmol/l) is widespread amongst pregnant women around the world and has been proposed to influence offspring outcomes in childhood and into adult life, including adiposity and allergy. Disorders including asthma and eczema are on the rise amongst children. Our aim was to investigate the relationship between maternal 25-hydroxyvitamin D status in pregnancy and offspring adiposity, asthma and eczema in childhood. SUBJECTS AND METHODS: Maternal 25-hydroxyvitamin D concentrations were analysed in serum samples collected at 15 weeks' gestation from 1710 participants of the prospective Screening for Pregnancy Endpoints (SCOPE) cohort study...
August 4, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28765418/the-emergence-of-sarcopenia-as-an-important-entity-in-older-people
#10
Natalie J Offord, Miles D Witham
Sarcopenia refers to the loss of muscle mass and strength seen with advancing age. The pathophysiology is multifactorial, with loss of muscle satellite cells, changes in hormonal systems, chronic inflammation, oxidative stress and anabolic resistance to protein utilisation all implicated. Older age, female sex and immobility are important risk factors. Sarcopenia is clinically important as it is a major risk factor for physical frailty, falls, prolonged hospitalisation, dependency and earlier death. Diagnosis requires evidence of reduced muscle mass measured by handgrip strength or walk speed, together with evidence of low muscle mass, measured by one of a variety of techniques such as bioimpedance analysis or dual X-ray absorptiometry...
July 2017: Clinical Medicine: Journal of the Royal College of Physicians of London
https://www.readbyqxmd.com/read/28764509/note-temperature-effects-in-the-modified-howland-current-source-for-electrical-bioimpedance-spectroscopy
#11
S Fernandez Santos, P Bertemes-Filho
The aim of this study is to show how the modified Howland current source (MHCS) is affected by temperature changes. The source has been tested in a temperature range from 20 to 70 °C and frequency range from 100 Hz to 1 MHz. Parameters like output current, output impedance, total harmonic distortion, and oscillation have been measured. The measurements were made inside a temperature controlled environment. It was showed that the MHCS is stable at temperatures below 70 °C. Operational amplifiers with a low temperature drift and matching resistor should be carefully considered in order to prevent oscillations at high temperatures...
July 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28762626/adjustment-of-target-weight-based-on-absolute-blood-volume-reduces-the-frequency-of-intradialytic-morbid-events
#12
Susanne Kron, Daniel Schneditz, Jutta Czerny, Til Leimbach, Klemens Budde, Joachim Kron
INTRODUCTION: Adequate volume management removing excess volume and at the same time avoiding intradialytic morbid events (IME) remains a core problem in current hemodialysis (HD) therapy. Recently, we developed a feasible method to determine absolute blood volume (Vs, in mL/kg) in patients on HD. The aim of this study was to investigate the suitability of Vs measurements for volume management. METHODS: Following a 4 week baseline phase to quantify the frequency of IME, volume status was determined in a single specified HD session during which Vs was measured using dialysate dilution, volume overload (Vo, L) was measured using bioimpedance spectroscopy, and the occurrence of IME was recorded...
August 1, 2017: Hemodialysis International
https://www.readbyqxmd.com/read/28760428/influence-of-nutritional-status-in-the-diagnosis-of-sarcopenia-in-nursing-home-residents
#13
Beatriz Lardiés-Sánchez, Alejandro Sanz-París, Javier Pérez-Nogueras, Antonio Serrano-Oliver, María E Torres-Anoro, Alfonso J Cruz-Jentoft
OBJECTIVES: Malnutrition and sarcopenia frequently coexist in elderly patients. The aim of this study was to assess the effect of nutritional status in the diagnosis of sarcopenia in nursing home residents. METHODS: A cross-sectional study was performed with data collected from 339 elderly patients living in five nursing homes. Sarcopenia was defined according to the consensus definition of the European Working Group on Sarcopenia in Older People. Body mass composition was assessed using bioimpedance analysis, handgrip strength using a dynamometer, and physical performance by 5-m gait speed test...
September 2017: Nutrition
https://www.readbyqxmd.com/read/28750074/dpp4-gene-variation-affects-glp-1-secretion-insulin-secretion-and-glucose-tolerance-in-humans-with-high-body-adiposity
#14
Anja Böhm, Robert Wagner, Fausto Machicao, Jens Juul Holst, Baptist Gallwitz, Norbert Stefan, Andreas Fritsche, Hans-Ulrich Häring, Harald Staiger
OBJECTIVE: Dipeptidyl-peptidase 4 (DPP-4) cleaves and inactivates the insulinotropic hormones glucagon-like peptide 1 (GLP-1) and gastric inhibitory polypeptide, collectively termed incretins. DPP-4 inhibitors entered clinical practice as approved therapeutics for type-2 diabetes in 2006. However, inter-individual variance in the responsiveness to DPP-4 inhibitors was reported. Thus, we asked whether genetic variation in the DPP4 gene affects incretin levels, insulin secretion, and glucose tolerance in participants of the TÜbingen Family study for type-2 diabetes (TÜF)...
2017: PloS One
https://www.readbyqxmd.com/read/28749485/thoracic-fluid-content-by-electric-bioimpedance-correlates-with-respiratory-distress-in-newborns
#15
G Paviotti, A De Cunto, V Moressa, C Bettiol, S Demarini
OBJECTIVE: The objective of the study was to compare thoracic fluid content (TFC) between newborn infants with and without respiratory distress. We tested the hypothesis that TFC would be higher in infants with respiratory distress. STUDY DESIGN: A total of 96 newborn infants, gestational age 37.9 (2.6) weeks, were enrolled at birth. TFC by electrical bioimpedance was recorded within 3 h after birth (TFC1) and at 24 h of life (TFC2). RESULTS: TFC1 was higher in infants with respiratory distress at birth (76...
July 27, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28749359/systolic-time-interval-estimation-using-continuous-wave-radar-with-on-body-antennas
#16
Dilpreet Buxi, Evelien Hermeling, Marco Mercuri, Fabian Beutel, Roberto Garcia van der Westen, Tom Torfs, Jean-Michel Redoute, Mehmet Rasit Yuce
The estimation of systolic time interval (STI)s is done using continuous wave (CW) radar at 2.45GHz with an on-body antenna. MOTIVATION: In the state of the art, typically bioimpedance, heart sounds and / or ultrasound is used to measure STIs. All three methods suffer from insufficient accuracy of STI estimation due to various reasons. CW radar is investigated for its ability to overcome the deficiencies in the state of the art. METHODS: Ten healthy male subjects aged 25-45 were asked to lie down at a 30 degree incline...
July 25, 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28744779/congenital-fiber-type-disproportion-in-an-ambulatory-rehabilitation-setting-a%C3%A2-case-report
#17
Stefano Palma, Mohammad Keilani, Tim Hasenoehrl, Clemens Ambrozy, Sara Dana, Thomas Sycha, Richard Crevenna
Congenital fiber-type disproportion is a rare condition, histologically characterized by a relative type 1 fiber hypotrophy. The main clinical feature is mild-to-severe muscle weakness. In this report, we present the case of a 21-year-old patient with congenital fiber-type disproportion in an outpatient rehabilitative setting to evaluate the feasibility and results of an assessment battery, including bioimpedance analysis (BIA), dynamometry, 3D gait analysis, 6‑min walk test (6MWT), and the timed up and go test (TUG)...
July 25, 2017: Wiener Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28744635/express-estimation-of-the-biological-age-by-the-parameters-of-body-composition-in-men-and-women-over-50-years
#18
M A Negasheva, S N Zimina, N E Lapshina, I M Sineva
Original formulas for rapid assessment of biological age in men and women over 50 were developed using factor analysis. The proposed technique is mainly based on the parameters of the body component composition (fat, musculoskeletal, and active cell mass, and specific metabolism) obtained using bioimpedance recording widely used in modern medicine and anthropology. The proposed formulas were tested on other samples (481 examined subjects). The developed method of express estimation of biological age differs from other models by its convenience, simplicity, low financial and time costs, and the possibility of using it in mass medico-anthropological examinations for identification of individuals/groups with accelerated rates of aging...
July 25, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28742506/bioimpedance-analysis-vs-dexa-as-a-screening-tool-for-osteosarcopenia-in-lean-overweight-and-obese-caucasian-postmenopausal-females
#19
Melpomeni Peppa, Charikleia Stefanaki, Athanasios Papaefstathiou, Dario Boschiero, George Dimitriadis, George P Chrousos
BACKGROUND-OBJECTIVES: We aimed at evaluating the efficiency of a newly developed, advanced Bioimpedance Analysis (BIA-ACC®) device as a screening tool for determining the degree of obesity and osteosarcopenia in postmenopausal women with normal or decreased bone density determined by Dual-Energy X-Ray absorptiometry (DEXA) in a representative sample of Greek postmenopausal women. METHODS: This is a single-gate cross-sectional study of body composition measured by BIA-ACC® and DEXA...
April 2017: Hormones: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28741804/does-whey-protein-supplementation-improve-the-nutritional-status-in-hypoalbuminemic-peritoneal-dialysis-patients
#20
Kamal Hassan
Limited data are available regarding the effects of whey protein on the nutritional status of the peritoneal dialysis population. This study evaluated the effects of whey protein supplementation for 12 weeks on the nutritional status in hypoalbuminemic peritoneal dialysis patients. Thirty-six stable adult patients on maintenance peritoneal dialysis with serum albumin levels <3.5 g/dL were enrolled in the study and were divided into two groups similar in their serum albumin and normalized protein equivalent of total nitrogen appearance (nPNA)...
July 25, 2017: Therapeutic Apheresis and Dialysis
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