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Bioimpedance analysis

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https://www.readbyqxmd.com/read/28426506/applications-of-noninvasive-hemodynamic-monitoring-in-obstetric-management
#1
John T Sullivan
Clinicians managing obstetric patients are dependent on valid hemodynamic measurements to guide care. Heart rate and noninvasive blood pressure guide most current care. New hemodynamic monitors are being used to report research findings and are being investigated by clinicians for their value to supplement standard monitoring. These include arterial pulse contour analysis, Doppler velocimetry, and bioimpedance among others. This chapter serves to present these new devices with a critical review of their advantages and limitations, and most importantly the validity of their measurements...
June 2017: Clinical Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28421794/relation-of-trp64arg-polymorphism-of-beta-3-adrenoreceptor-gene-with-metabolic-syndrome-and-insulin-resistance-in-obese-women
#2
Daniel Antonio De Luis Román, David Primo, Olatz Izaola, Rocío Aller
BACKGROUND AND AIM: Trp64Arg variant in beta 3 adrenoreceptor has been reported to be associated with increased body weight and insulin resistance. These risk factors are the ones that make up the so-called metabolic syndrome. The aim of our study was to investigate the relationship between metabolic syndrome and Trp64Arg polymorphism in the beta3 adrenoreceptor gene in obese women. METHODS: A population of 531 obese women was analyzed in cross-sectional survey...
March 30, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28415069/comparison-of-bioimpedance-and-underwater-weighing-body-fat-percentage-before-and-acutely-after-exercise-at-varying-intensities
#3
Brett S Nickerson, Michael R Esco, Brian M Kliszczewicz, Todd J Freeborn
Nickerson, BS, Esco, MR, Kliszczewicz, BM, and Freeborn, TJ. Comparison of bioimpedance and underwater weighing body fat percentage before and acutely after exercise at varying intensities. J Strength Cond Res 31(5): 1395-1402, 2017-The purpose of this study was to compare single-frequency bioelectrical impedance analysis (BIA) and bioimpedance spectroscopy (BIS) with underwater weighing (UWW) body fat percentage (BF%) before (PRE), immediately post (IP), and 60 minutes post (60P) an acute bout of moderate and vigorous aerobic exercise...
May 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28396734/low-lean-tissue-mass-is-an-independent-risk-factor-for-mortality-in-patients-with-stages-4-and-5-non-dialysis-chronic-kidney-disease
#4
Almudena Vega, Soraya Abad, Nicolás Macías, Inés Aragoncillo, Alba Santos, Isabel Galán, Santiago Cedeño, Juan Manuel López-Gómez
Background: Mortality in patients with stages 4 and 5 chronic kidney disease (CKD) is higher than in the general population. Body composition predicts mortality. Our objective was to evaluate the effect of body composition on mortality in patients with stages 4 and 5 non-dialysis CKD. Methods: We performed a prospective study of 356 patients with stages 4 and 5 non-dialysis CKD. At baseline, we recorded general characteristics, history of cardiovascular events, body composition, serum inflammatory markers, nutrition and cardiac biomarkers...
April 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/28371518/clinical-utility-of-bioimpedance-analysis-in-liver-cirrhosis
#5
Hiroki Nishikawa, Hirayuki Enomoto, Yoshinori Iwata, Takashi Nishimura, Hiroko Iijima, Shuhei Nishiguchi
PURPOSE: To examine the impact of muscle mass depletion (MMD) as determined by data in bio{\hyphen}impedance analysis (BIA) in liver cirrhosis (LC) patients (n{\equal}382, 204 in male and 178 in female) on survival and to validate the utility of cutoff values in BIA recommended from current recommendations. PATIENTS AND METHODS: MMD was defined as patients with skeletal muscle mass index (SMI) using BIA {\lt}7.0 cm(2) {\sol}m(2) for male and {\lt}5.7 cm(2) {\sol}m(2) for female based on current recommendations...
March 31, 2017: Journal of Hepato-biliary-pancreatic Sciences
https://www.readbyqxmd.com/read/28346864/application-of-the-l-dex-score-for-the-assessment-of-bilateral-leg-edema
#6
Kotaro Suehiro, Noriyasu Morikage, Takasuke Harada, Makoto Samura, Yuriko Takeuchi, Takahiro Mizoguchi, Kaori Nakamura, Kimikazu Hamano
BACKGROUND: We evaluated a modified L-Dex score by using the right arm as a reference (LDSrarm), to determine whether it could be used for the assessment of leg edema in place of the usual L-Dex score calculated by using the contralateral normal leg as a reference (LDScont). METHODS: Bioimpedance analysis was performed in the legs and right arms of 38 patients with unilateral leg edema and in 42 healthy volunteers by using a standard equipotential electrode arrangement...
March 27, 2017: Lymphatic Research and Biology
https://www.readbyqxmd.com/read/28346852/preoperative-lymphedema-related-risk-factors-in-early-stage-breast-cancer
#7
Zeynep Erdogan Iyigun, Tomris Duymaz, Ahmet Serkan Ilgun, Gul Alco, Cetin Ordu, Dauren Sarsenov, Ayse Esra Aydin, Filiz Elbuken Celebi, Filiz Izci, Yeşim Eralp, Vahit Ozmen
BACKGROUND: Prolongation of survival in patients with breast cancer due to early diagnosis and modern methods of treatment has turned the attention on lymphedema, which is the most important morbidity secondary to the treatment of the disease. Determination of lymphedema and related risk factors in patients before a surgical intervention may provide protection for patients and early treatment. The aim of this study was to determine the presence of lymphedema before surgery by bioimpedance analysis in patients with breast cancer and to establish risk factors associated with lymphedema...
March 27, 2017: Lymphatic Research and Biology
https://www.readbyqxmd.com/read/28343799/characterization-of-deficits-across-the-spectrum-of-motor-abilities-in-dialysis-patients-and-the-impact-of-sarcopenic-overweight-and-obesity
#8
Maja Bučar Pajek, Jernej Pajek
BACKGROUND & AIMS: Physical performance deficits in kidney failure predict mortality and quality of life. We aimed to quantify deficits in multiple motor abilities, investigate associations of lean and fat tissue content with test results and analyzed performance of sarcopenic individuals with adipose tissue excess. METHODS: Ninety hemodialysis patients and 140 healthy controls performed 6-minute walk test, gait speed measurement, sit-to-stand and time up and go tests, upper extremity handgrip and tapping tests, Stork balance and forward bend flexibility tests...
March 16, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28341684/association-between-physical-activity-and-body-fat-percentage-with-adjustment-for-bmi-a-large-cross-sectional-analysis-of-uk-biobank
#9
Kathryn E Bradbury, Wenji Guo, Benjamin J Cairns, Miranda E G Armstrong, Timothy J Key
OBJECTIVES: The objective of this study was to examine if, in the general population, physically active adults have less body fat after taking body mass index (BMI) into account. DESIGN: A cross-sectional analysis of participants recruited into UK Biobank in 2006-2010. SETTING: UK Biobank assessment centres throughout the UK. PARTICIPANTS: 119 230 men and 140 578 women aged 40-69 years, with complete physical activity information, and without a self-reported long-term illness, disability or infirmity...
March 24, 2017: BMJ Open
https://www.readbyqxmd.com/read/28337238/body-composition-as-an-indicator-of-the-nutritional-status-in-children-with-newly-diagnosed-ulcerative-colitis-and-crohn-s-disease-a-prospective-study
#10
Paweł Więch, Monika Binkowska-Bury, Bartosz Korczowski
INTRODUCTION: The prevalence of nutritional status disorders in children with ulcerative colitis (UC) is much lower than in the case of Crohn's disease (CD). The largest variability in the components of body composition occurs at the time of a new diagnosis and in periods of disease exacerbation. AIM: Assessment of body composition in children with UC and CD. MATERIAL AND METHODS: The preliminary study included 59 children with inflammatory bowel disease (IBD) (34 children with UC vs...
2017: Przegla̜d Gastroenterologiczny
https://www.readbyqxmd.com/read/28329345/prevalence-and-clinical-correlates-of-sarcopenia-identified-according-to-the-ewgsop-definition-and-diagnostic-algorithm-in-hospitalized-older-people-the-glisten-study
#11
Lara Bianchi, Pasquale Abete, Giuseppe Bellelli, Mario Bo, Antonio Cherubini, Francesco Corica, Mauro Di Bari, Marcello Maggio, Giovanna Maria Manca, Maria Rosaria Rizzo, Andrea P Rossi, Francesco Landi, Stefano Volpato
Background: Prevalence of sarcopenia is substantial in most geriatrics settings, but estimates vary greatly across studies because of difference in population characteristics, diagnostic criteria, and methods used to assess muscle mass, muscle strength, and physical performance. We investigated the feasibility of the European Working Group on Sarcopenia in Older People (EWGSOP) algorithm assessment in hospitalized older adults and analyzed prevalence and clinical correlates of sarcopenia...
January 21, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28319679/evaluation-of-body-composition-with-bioimpedence-a-comparison-between-athletic-and-non-athletic-children
#12
Domenico Meleleo, Nicola Bartolomeo, Liliana Cassano, Alessandro Nitti, Giovanna Susca, Giuseppina Mastrototaro, Umberto Armenise, Annapaola Zito, Fiorella Devito, Pietro Scicchitano, Marco Matteo Ciccone
PURPOSE: Conventional Bioelectrical Impedance Analysis (BIA) or Bioelectrical Impedance Vector Analysis (BIVA) can provide direct evaluations of body composition. The purpose of this study was to evaluate lean and fat mass (FM), and hydration of children involved in daily competitive sports. METHODS: 190 non-athletic [8.2-10.5 years] and 29 competitive children [8.0-10.5 years] were enrolled. They were evaluated: at baseline (t0), 6 months (t1) and one year (t2)...
March 20, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28303474/respiratory-motion-reduction-with-a-dual-gating-approach-in-myocardial-perfusion-spect-effect-on-left-ventricular-functional-parameters
#13
Matti J Kortelainen, Tuomas M Koivumäki, Marko J Vauhkonen, Marja K Hedman, Satu T J Kärkkäinen, Juanita Niño Quintero, Mikko A Hakulinen
BACKGROUND: Respiratory motion (RM) complicates the analysis of myocardial perfusion (MP) single-photon emission computed tomography (SPECT) images. The effects of RM on left ventricular (LV) functional variables have not been thoroughly investigated. METHODS AND RESULTS: Thoracic electrical bioimpedance and electrocardiographic signals were recorded from eighteen patients undergoing the rest phase of a 1-day stress/rest cardiac-gated MP-SPECT examination. The signals and list-mode emission data were retrospectively processed to yield standard cardiac- and dual-gated (respiratory and cardiac gating) image sets applying a novel algorithm...
March 16, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28295857/single-frequency-and-multi-frequency-bioimpedance-analysis-what-is-the-difference
#14
Serkan Feyyaz Yalın, Sibel Gulcicek, Suna Avci, Banu Erkalma Senates, Mehmet Riza Altıparmak, Sinan Trabulus, Selma Alagoz, Hakan Yavuzer, Alper Doventas, Nurhan Seyahi
AIM: Bioelectrical impedance analysis is a promising method in determining the body compartments in hemodialysis patients. In this study, we aimed to investigate the agreement between two widely used methods: the single-frequency and multi-frequency bioelectrical impedance analyses. METHODS: Maintenance hemodialysis patients were enrolled in the study. Single-frequency and multi-frequency bioelectrical impedance analyses were performed consecutively before hemodialysis...
March 10, 2017: Nephrology
https://www.readbyqxmd.com/read/28275826/lower-jump-power-rather-than-muscle-mass-itself-is-associated-with-vertebral-fracture-in-community-dwelling-elderly-korean-women
#15
Eun Young Lee, Su Jin Lee, Kyoung Min Kim, Da Hea Seo, Seung Won Lee, Han Sol Choi, Hyeon Chang Kim, Yoosik Youm, Chang Oh Kim, Yumie Rhee
Sarcopenia is considered to be a risk factor for osteoporotic fracture, which is a major health problem in elderly women. In this study, we aimed to investigate the association of sarcopenia, with regard to muscle mass and function, with prevalent vertebral fracture in community-dwelling elderly women. We recruited 1281 women aged 64 to 87 years from the Korean Urban Rural Elderly cohort study. Muscle mass and function were measured using bioimpedance analysis and jumping mechanography. Skeletal muscle index (SMI) and jump power were used as an indicator of muscle mass and function, respectively...
March 9, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/28271257/outcomes-of-diuretic-use-in-pre-dialysis-ckd-patients-with-moderate-renal-deterioration-attending-tertiary-care-referral-center
#16
Yusra Habib Khan, Azmi Sarriff, Azreen Syazril Adnan, Amer Hayat Khan, Tauqeer Hussain Mallhi
INTRODUCTION: Diuretic therapy has been the mainstay of treatment in chronic kidney disease (CKD) patients, primarily for hypertension and fluid overload. Apart from their beneficial effects, diuretic use is associated with adverse renal outcomes. The current study is aimed to determine the outcomes of diuretic therapy. METHODOLOGY: A prospective observational study was conducted by inviting pre-dialysis CKD patients. Fluid overload was assessed by Bioimpedance analysis (BIA)...
March 7, 2017: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/28269447/using-bioimpedance-spectroscopy-parameters-as-real-time-feedback-during-tdcs
#17
Isar Nejadgholi, Herschel Caytak, Miodrag Bolic
An exploratory analysis is carried out to investigate the feasibility of using BioImpedance Spectroscopy (BIS) parameters, measured on scalp, as real-time feedback during Transcranial Direct Current Stimulation (tDCS). TDCS is shown to be a potential treatment for neurological disorders. However, this technique is not considered as a reliable clinical treatment, due to the lack of a measurable indicator of treatment efficacy. Although the voltage that is applied on the head is very simple to measure during a tDCS session, changes of voltage are difficult to interpret in terms of variables that affect clinical outcome...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268788/measurement-of-electrical-impedance-in-different-ex-vivo-tissues
#18
Davide Meroni, Dario Bovio, Pietro A Frisoli, Andrea Aliverti
Bioimpedance allows living tissues characterization and detection of pathological states. Although in previous years several methods have been proposed to assess bioimpedance, many instruments used in studies of living tissues characterization are commercial devices designed for the measurement of components or electronic circuits and therefore the measurement of biological tissues can be affected by electrical polarization. In order to test if electrical impedance spectroscopy may be helpful in providing further information about the structure and the properties of tissues, an impedance meter for living-tissues, able to avoid polarization, was developed...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268701/dual-mode-cmos-analog-front-end-afe-for-electrical-impedance-spectroscopy-eis-systems
#19
Virgilio Valente, Dai Jiang, Andreas Demosthenous
This paper presents the operation of a dual-mode wideband CMOS analog front-end (AFE) for electrical impedance spectroscopy. The chip combines two current-readout (CR) channels and four voltage-readout (VR) channels suitable for both bipolar and tetrapolar EIS analysis. The chip addresses the need for flexible readout units for real-time simultaneous single-cell and large scale tissue/organ analysis. Postlayout simulations show that the VR channel is capable of wideband operation up to 12 MHz with noise floor as low as 16...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28259478/comparison-of-equations-of-resting-and-total-energy-expenditure-in-peritoneal-dialysis-patients-using-body-composition-measurements-determined-by-multi-frequency-bioimpedance
#20
Sally El-Kateb, Sivakumar Sridharan, Ken Farrington, Stanley Fan, Andrew Davenport
BACKGROUND & AIMS: Waste products of metabolism accumulate in patients with kidney failure and it has been proposed that the amount of dialysis treatment patients require be adjusted for energy expenditure. This requires validation of methods to estimate energy expenditure in dialysis patients. METHODS: We compared values of resting energy expenditure (REE) estimated in peritoneal dialysis (PD) patients using a selection of available equations with estimates derived using a novel equation recently validated in chronic kidney disease patients (CKD equation)...
February 17, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
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