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Bioimpedence

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https://www.readbyqxmd.com/read/29146992/pre-pregnancy-overweight-or-obesity-and-gestational-diabetes-as-predictors-of-body-composition-in-offspring-twenty-years-later-evidence-from-two-birth-cohort-studies
#1
N Kaseva, M Vääräsmäki, H-M Matinolli, M Sipola-Leppänen, M Tikanmäki, K Heinonen, A Lano, D Wolke, S Andersson, M-R Järvelin, K Räikkönen, G Eriksson Johan, E Kajantie
BACKGROUND: Global prevalence of overweight/obesity and gestational diabetes (GDM) is increasing. In pregnant women both conditions affect offspring's later health. Overweight/obesity is a risk factor of GDM; to what extent maternal overweight/obesity explains long-term effects of GDM in offspring is unknown. OBJECTIVE: To evaluate effects of maternal pre-pregnancy overweight/obesity (BMI ⩾25 kg/m(2)) and GDM, occurring together or separately, on body composition among adult offspring...
November 17, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29136192/assessing-the-hydration-status-of-children-with-chronic-kidney-disease-and-on-dialysis-a-comparison-of-techniques
#2
Caroline S Y Eng, Devina Bhowruth, Mark Mayes, Lynsey Stronach, Michelle Blaauw, Amy Barber, Lesley Rees, Rukshana C Shroff
Background: Fluid balance is pivotal in the management of children with chronic kidney disease (CKD) and on dialysis. Although many techniques are available to assess fluid status, there are only a few studies for children, of which none have been comparable against cardiovascular outcome measures. Methods: We performed a longitudinal study in 30 children with CKD5-5D and 13 age-matched healthy controls (71 measurements) to determine a correlation between optimal weight by bioimpedance spectroscopy (Wt-BIS) and clinical assessment (Wt-CA)...
November 9, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29135784/fitness-fatness-physical-activity-and-autonomic-function-in-midlife
#3
Antti M Kiviniemi, Nelli Perkiömäki, Juha Auvinen, Maisa Niemelä, Tuija Tammelin, Katri Puukka, Aimo Ruokonen, Sirkka Keinänen-Kiukaanniemi, Mikko P Tulppo, Marjo-Riitta Järvelin, Timo Jämsä, Heikki V Huikuri, Raija Korpelainen
PURPOSE: Although low cardiorespiratory fitness (CRF), physical inactivity, and obesity are associated with impaired autonomic function, they are also extensively interrelated. The present study aimed to assess the extent to which they contribute to autonomic function independently of each other. METHODS: At the age of 46 yr, 1383 men and 1761 women without cardiorespiratory diseases and diabetes underwent assessments of vagally mediated heart rate (HR) variability (root mean square of successive differences in R-R interval (rMMSD)), peak HR during a submaximal step test (CRF), and 60-s HR recovery (HRR)...
December 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29132475/relation-of-muscle-indices-with-metabolic-parameters-and-c-peptide-in-type-2-diabetes-mellitus
#4
Sabah Tuzun, Can Oner, M Resat Dabak, Halim Omer Kasikci, Mehmet Sargin
OBJECTIVE: To assess the relation between bioimpedance measurements and metabolic parameters and C-peptide in patient with type 2 diabetes mellitus (DM). STUDY DESIGN: Cross-sectional study. PLACE AND DURATION OF STUDY: Kartal Dr Lutfi Kirdar Training and Research Hospital, Pendik Kaynarca Diabetes Center, Exercise and Metabolism Unit, between January and March 2015. METHODOLOGY: Patients with DM, aged less than 65 years, were assessed for bioimpedance analysis, fasting plasma glucose (FPG), HbA1c, C-peptide levels, triglyceride levels, LDL-cholesterol, and HDL-cholesterol levels...
November 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/29131365/gut-microbiota-and-body-composition-in-anorexia-nervosa-inpatients-in-comparison-to-athletes-overweight-obese-and-normal-weight-controls
#5
Sabrina Mörkl, Sonja Lackner, Wolfram Müller, Gregor Gorkiewicz, Karl Kashofer, Andreas Oberascher, Annamaria Painold, Anna Holl, Peter Holzer, Andreas Meinitzer, Harald Mangge, Sandra Holasek
OBJECTIVES: Anorexia nervosa (AN) is a heterogeneous eating disorder associated with alterations of body structure and the gut microbiome. We aimed to investigate the gut microbiota composition of a large female cohort including different BMI groups and activity levels along with body composition parameters. METHOD: 106 female participants were included in this cross-sectional study: AN patients (n = 18), athletes (n = 20), normal weight (n = 26), overweight (n = 22), and obese women (n = 20)...
November 13, 2017: International Journal of Eating Disorders
https://www.readbyqxmd.com/read/29130711/combined-assessment-of-nutritional-status-in-patients-with-peritoneal-dialysis-using-bioelectrical-impedance-vectors-and-malnutrition-inflammation-score
#6
Elia Muñoz-Pérez, María De Los Ángeles Espinosa-Cuevas, Paola Vanessa Miranda-Alatriste, Ricardo Correa-Rotter, Ximena Atilano-Carsi
BACKGROUND AND OBJECTIVE: Protein energy wasting (PEW) is a common syndrome in patients with chronic kidney disease, related to changes in hydration status, decreased food intake and inflammation. There are several tools for the assessment and diagnosis of such alterations. Bioimpedance vector analysis (BIVA) assess the state of nutrition and hydration, but not the inflammatory component, while the malnutrition inflammation score (MIS) comprises the inflammatory and nutritional factors, but not the state of hydration...
October 24, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/29130036/accuracy-precision-and-trending-ability-of-electrical-cardiometry-cardiac-index-versus-continuous-pulmonary-artery-thermodilution-method-a-prospective-observational-study
#7
P B W Cox, A M den Ouden, M Theunissen, L J Montenij, A G H Kessels, M D Lancé, W F F A Buhre, M A E Marcus
Introduction: Evaluation of accuracy, precision, and trending ability of cardiac index (CI) measurements using the Aesculon™ bioimpedance electrical cardiometry (Aesc) compared to the continuous pulmonary artery thermodilution catheter (PAC) technique before, during, and after cardiac surgery. Methods: A prospective observational study with fifty patients with ASA 3-4. At six time points (T), measurements of CI simultaneously by continuous cardiac output pulmonary thermodilution and thoracic bioimpedance and standard hemodynamics were performed...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29128261/multi-parametric-rigid-and-flexible-low-cost-disposable-sensing-platforms-for-biomedical-applications
#8
Salzitsa Anastasova, Panagiotis Kassanos, Guang-Zhong Yang
The measurement of Na(+), K(+) and H(+) is essential in medicine and plays an important role in the assessment of tissue ischemia. Microfabrication, inkjet- and screen-printing can be used for solid contact ion selective electrodes (ISE) realization; these, however, can be non-standardized, costly and time consuming processes. We present the realization of ISEs on post-processed electrodes fabricated via standardized printed circuit board (PCB) manufacturing techniques. In vitro results are presented from two rigid platforms (32 ISEs) for liquid sample dip-stick measurements and two flexible platforms (6 and 32 ISEs) for post-surgical intestinal tissue monitoring, each with a common reference electrode (RE)...
October 18, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29102374/body-composition-is-associated-with-clinical-outcomes-in-patients-with-non-dialysis-dependent-chronic-kidney-disease
#9
Ting-Yun Lin, Ching-Hsiu Peng, Szu-Chun Hung, Der-Cherng Tarng
An inverse relationship between body mass index (BMI) and mortality (the obesity paradox) has been found in patients with non-dialysis-dependent chronic kidney disease (CKD). However, it is unclear whether increased muscle mass or body fat confers the survival advantage. To resolve this we investigated the impact of body makeup on a composite outcome of death or cardiovascular events in a prospective cohort of 326 patients with stage 3-5 CKD not yet on dialysis. Lean mass and body fat were determined using the Body Composition Monitor, a multifrequency bioimpedance spectroscopy device, and were expressed as the lean tissue or fat tissue index, respectively...
November 1, 2017: Kidney International
https://www.readbyqxmd.com/read/29099725/limitations-and-challenges-of-eit-based-monitoring-of-stroke-volume-and-pulmonary-artery-pressure
#10
Fabian Braun, Martin Proença, Mathieu Lemay, Mattia Bertschi, Andy Adler, Jean-Philippe Thiran, Josep Sola
<i>Objective</i>: Electrical impedance tomography (EIT) shows potential for radiation-free and non-invasive hemodynamic monitoring. However, many factors degrade the accuracy and repeatability of these measurements. Our goal is to estimate the impact of this variability on EIT-based monitoring of two important central hemodynamic parameters: stroke volume (SV) and pulmonary artery pressure (PAP). <i>Approach</i>: We performed simulations on a 4D (3D + t) bioimpedance model of a human volunteer to study the influence of four potential confounding factors (electrode belt displacement, electrode detachment, changes in hematocrit and lung air volume) on the performance of EIT-based SV and PAP estimation...
November 3, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/29095010/-metabolic-syndrome-and-visceral-fat-in-women-with-cardiovascular-risk-factor
#11
Anxela Soto Rodríguez, José Luis García Soidán, Mª Jesús Arias Gómez, Raquel Leirós Rodríguez, Alberto Del Álamo Alonso, Mª Reyes Pérez Fernández
INTRODUCTION: Cardiovascular diseases are the leading cause of death in women after menopause, since after this stage there are profound metabolic and hormonal changes which favor the development of metabolic syndrome. An increase in the percentage of visceral fat may be related to the onset of this syndrome. OBJECTIVE: To establish the relationship between visceral fat and parameters of the metabolic syndrome and to determine the optimal cut-off point for the variables related to obesity in women with a cardiovascular risk factor...
July 28, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/29091152/study-of-the-relation-between-body-weight-and-functional-limitations-and-pain-in-patients-with-knee-osteoarthritis
#12
Fábio Marcon Alfieri, Natália Cristina de Oliveira Vargas E Silva, Linamara Rizzo Battistella
OBJECTIVE: To assess the influence of the body weight in functional capacity and pain of adult and elderly individuals with knee osteoarthritis. METHODS: The sample consisted of 107 adult and elderly patients with knee osteoarthritis divided into two groups (adequate weight/adiposity and excessive weight/adiposity) according to body mass index and percent of body fat mass, assessed by electric bioimpedance. Subjects were evaluated for functional mobility (Timed Up and Go Test), pain, stiffness and function (Western Ontario and MacMaster Universities Osteoarthritis Index - WOMAC), pain intensity (Visual Analogue Scale - VAS) and pressure pain tolerance threshold (algometry in vastus medialis and vastus lateralis muscles)...
July 2017: Einstein
https://www.readbyqxmd.com/read/29075989/uric-acid-and-obesity-related-phenotypes-in-postmenopausal-women
#13
B Grygiel-Górniak, M Mosor, J Marcinkowska, J Przysławski, J Nowak
The aim of this study was to find the genetic, metabolic, and nutritional risk factors, which can be associated with uric acid (UA) level. The risk factors related to uricemia were assessed among 271 postmenopausal women without cardiometabolic disorders and hypolipidemic/hypoglycemic treatment selected from a cohort of 1423 obese postmenopausal women. The bioimpedance analysis and biochemical and genetic analyses were performed in two groups characterized by serum UA ≥ 4 mg/dL (238 μmol/L) and < 4 mg/dL...
October 26, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29063664/reducing-chronic-breast-cancer-related-lymphedema-utilizing-a-program-of-prospective-surveillance-with-bioimpedance-spectroscopy
#14
Pat W Whitworth, Andrea Cooper
This single-institution experience evaluated the use of bioimpedance spectroscopy to facilitate early detection and treatment of breast cancer-related lymphedema (BCRL) in a cohort of 596 patients (79.6% high risk). Seventy-three patients (12%) developed an elevated L-Dex score with axillary lymph node dissection (P < .001), taxane chemotherapy (P = .008), and regional nodal irradiation (P < .001) associated. At last follow-up, only 18 patients (3%) had unresolved clinically significant BCRL requiring complete decongestive physiotherapy...
October 24, 2017: Breast Journal
https://www.readbyqxmd.com/read/29060832/a-bioimpedance-sensing-system-for-in-vivo-cancer-tissue-identification-design-and-preliminary-evaluation
#15
Camilla Carpano Maglioli, Darwin G Caldwell, Leonardo S Mattos
Bioimpedance evaluation can provide useful information for biological tissue characterization and potentially allows the identification of pathological areas within a tissue in-vivo. In this study a new needle-based bioimpedance sensing system was designed and developed to provide such capability considering intra-operative detection of cancerous tissue in the larynx as the primary specific application. The system is small, low-power, fully embedded in a printed circuit board and based on a disposable concentric electrode needle...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29060669/electrical-bioimpedance-spectroscopy-as-biosensor-technique-to-identify-cells-lineages-and-cell-differentiation-process
#16
C I Guerrero-Robles, G J Vazquez-Zapien, M M Mata-Miranda, J E Noriega-Gonzalez, C A Gonzalez-Diaz
The identification and characterization of diverse cells types and cell differentiation process requires complex techniques as flow cytometry, immunocytochemistry and the exploration of molecular markers; such techniques require infrastructure and qualified personnel. The objective of this study was to analyze the use of Electrical Bioimpedance Spectroscopy (EBIS) measurements as a non-complex alternative technique to identify populations of undifferentiated mouse Pluripotent Stem Cells (mPSCs), Mouse Embryonic Fibroblasts (MEFs) and the differentiation process from preadipocytes (3T3-L1) to mature adipocytes...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29060300/exploration-and-validation-of-alternate-sensing-methods-for-wearable-continuous-pulse-transit-time-measurement-using-optical-and-bioimpedance-modalities
#17
Bassem Ibrahim, Viswam Nathan, Roozbeh Jafari
In this work we explore the viability of a multimodal sensing device that can be integrated in a wearable form factor for daily, non-invasive ambulatory blood pressure (BP) monitoring. A common approach in previous research has been to rely on measuring the pulse transit time (PTT), which has been shown to be correlated with the BP. In this work, we look into the feasibility of measuring PTT using sensors separated by a small distance on one arm so that any eventual realization of the system is convenient to wear and use over long periods of time...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29060136/estimation-of-peripheral-blood-volume-and-interstitial-volume-in-hemodialysis-patients-using-bioimpedance-techniques
#18
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/29059798/detection-of-needle-to-nerve-contact-based-on-electric-bioimpedance-and-machine-learning-methods
#19
Havard Kalvoy, Christian Tronstad, Kyrre Ullensvang, Thorsten Steinfeldt, Axel R Sauter
In an ongoing project for electrical impedance-based needle guidance we have previously showed in an animal model that intraneural needle positions can be detected with bioimpedance measurement. To enhance the power of this method we in this study have investigated whether an early detection of the needle only touching the nerve also is feasible. Measurement of complex impedance during needle to nerve contact was compared with needle positions in surrounding tissues in a volunteer study on 32 subjects. Classification analysis using Support-Vector Machines demonstrated that discrimination is possible, but that the sensitivity and specificity for the nerve touch algorithm not is at the same level of performance as for intra-neuralintraneural detection...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29046768/smartphones-and-e-tablets-in-perioperative-medicine
#20
REVIEW
Frederic Michard
Smartphones and electronic tablets (e-tablets) have become ubiquitous devices. Their ease of use, smartness, accessibility, mobility and connectivity create unique opportunities to improve quality of surgical care from prehabilitation to rehabilitation. Before surgery, digital applications (Apps), serious games and text messaging may help for a better control of risk factors (hypertension, overweight), for smoking cessation, and for optimizing adherence to preoperative recommendations (e.g., regarding anticoagulation or antihypertensive treatments)...
October 2017: Korean Journal of Anesthesiology
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