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Bioimpedance tools monitoring

Adam J Kuchnia, Levi M Teigen, Abigail J Cole, Urvashi Mulasi, M Cristina Gonzalez, Steven B Heymsfield, David M Vock, Carrie P Earthman
BACKGROUND: Raw bioimpedance parameters (eg, 50-kHz phase angle [PA] and 200-kHz/5-kHz impedance ratio [IR]) have been investigated as predictors of nutrition status and/or clinical outcomes. However, their validity as prognostic measures depends on the availability of appropriate reference data. Using a large and ethnically diverse data set, we aimed to determine if ethnicity influences these measures and provide expanded bioimpedance reference data for the U.S. POPULATION: HASH(0x50ea210) METHODS: The National Health and Nutrition Examination Survey (NHANES) is an ongoing compilation of studies conducted by the U...
September 26, 2016: JPEN. Journal of Parenteral and Enteral Nutrition
Paik Seong Lim, Chang Hsu Chen, Fansan Zhu, Peter Kotanko, Yachung Jeng, Chun Yu Hu, Li Shu Chiu, Hui-Chen Chang
OBJECTIVE: Obesity is becoming increasingly common in hemodialysis (HD) patients and is associated with inflammation and increased mortality. The primary aim of the present study was to evaluate the accuracy and variability of the bioimpedance device in measuring body fat in Taiwanese dialysis patients. DESIGN: Cross-sectional study. SUBJECTS: One hundred twenty-two adult patients receiving HD in a single hospital in Taiwan. SETTING: We compared the results of fat mass (FM) measured by dual-energy x-ray absorptiometry (DEXA) and bioelectrical impedance spectroscopy device (Body composition monitor, BCM)...
September 22, 2016: Journal of Renal Nutrition
Muzamil Olamide Hassan, Raquel Duarte, Therese Dix-Peek, Ahmed Vachiat, Caroline Dickens, Sacha Grinter, Sagren Naidoo, Pravin Manga, Saraladevi Naicker
BACKGROUND: Fluid retention occurs early in chronic kidney disease (CKD) resulting in increased cardiovascular morbidity and mortality. This study aimed to assess volume and nutritional status among South African CKD participants and determine the relationship between malnutrition, inflammation, atherosclerosis, and volume overload using a body composition monitor (BCM). We also evaluated the usefulness of BCM measurement in assessing volume overload. METHODS: 160 participants comprising hemodialysis, peritoneal dialysis, stage 3 CKD patients, and healthy controls (40 in each group) were studied...
July 2016: Clinical Nephrology
Amara Callistus Nwosu, Lauren Morris, Catriona Mayland, Stephen Mason, Andrew Pettitt, John Ellershaw
Polyneuropathy, organomegaly, endocrinopathy, M-protein and skin changes (POEMS) syndrome is a rare paraneoplastic disorder associated with an underlying plasma cell dyscrasia and multiorgan failure. POEMS syndrome is potentially fatal and adversely affects quality of life. Oedema is common with many patients affected by pleural effusions, ascites and lower limb oedema. Bioelectrical impedance vector analysis (BIVA) is a non-invasive assessment tool, which enables rapid bedside assessments of nutrition and hydration...
September 2016: BMJ Supportive & Palliative Care
Mohamad H Tiba, Barry Belmont, Michael Heung, Nik Theyyunni, Robert D Huang, Christopher M Fung, Amanda J Pennington, Brandon C Cummings, Gerard T Draucker, Albert J Shih, Kevin R Ward
Assessment of volume status in critically ill patients poses a challenge to clinicians. Measuring changes in the inferior vena cava (IVC) diameter using ultrasound is becoming a standard tool to assess volume status. Ultrasound requires physicians with significant training and specialized expensive equipment. It would be of significant value to be able to obtain this measurement continuously without physician presence. We hypothesize that dynamic changes in limb's bioimpedance in response to respiration could be used to predict changes in IVC...
July 2016: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
Seyed Reza Atefi, Fernando Seoane, Shervin Kamalian, Eric S Rosenthal, Michael H Lev, Giorgio Bonmassar
PURPOSE: Current diagnostic neuroimaging for detection of intracranial hemorrhage (ICH) is limited to fixed scanners requiring patient transport and extensive infrastructure support. ICH diagnosis would therefore benefit from a portable diagnostic technology, such as electrical bioimpedance (EBI). Through simulations and patient observation, the authors assessed the influence of unilateral ICH hematomas on quasisymmetric scalp potential distributions in order to establish the feasibility of EBI technology as a potential tool for early diagnosis...
February 2016: Medical Physics
Michael A Garfinkle, James Barton
BACKGROUND: The diagnostic strength of the jugular venous pressure (JVP) and pedal edema as physical examination tools for the assessment of volume status has been minimally studied. METHODS: We conducted a prospective observational study in an outpatient peritoneal dialysis clinic in Saskatoon, Canada. Patients were adult (age 18 or older) peritoneal dialysis outpatients without any history of cardiac dysfunction, a central line, and current arteriovenous fistula...
2016: Canadian Journal of Kidney Health and Disease
Naho Kurasawa, Takefumi Mori, Eri Naganuma, Emiko Sato, Kenji Koizumi, Shinichi Sato, Ikuko Oba, Mihoko Tsuchikawa, Sadayoshi Ito
Home blood pressure (HBP) is an independent predictor of cardiovascular and renal function. However, no particular guidelines have been established for optimal HBP in peritoneal dialysis (PD) patients. Bioelectrical impedance analysis (BIA) is a beneficial tool for determining body composition. In the present study, we used BIA to determine body composition parameters that might play a role in the regulation of HBP in PD patients, and we compared HBP with office blood pressure (BP). Our study enrolled 15 patients (11 men, 4 women) receiving PD at Tohoku University Hospital, who, for 1 year, agreed to monitor HBP and to undergo body composition analysis...
2015: Advances in Peritoneal Dialysis
Catarina N Matias, Cristina P Monteiro, Diana A Santos, Fátima Martins, Analiza M Silva, Maria J Laires, Luís B Sardinha
Adequate magnesium (Mg) levels play a vital role in membrane excitability, cell contractility and metabolism, being a key nutrient for sustaining appropriate muscular contraction and performance levels in athletes. Phase angle (PhA), assessed by bioimpedance analysis (BIA), has been reported to be positively associated with most nutritional markers and is an indicator of membrane integrity and water distribution between intra- and extracellular spaces. The aim of the present study was to verify the association between Mg status and PhA as a predictor of cellular health, in a sample of judo athletes from a period of weight stability to prior to competition...
July 2015: Magnesium Research: Official Organ of the International Society for the Development of Research on Magnesium
Ximena Atilano-Carsi, José Luis Miguel, Jorge Martínez Ara, Rafael Sánchez Villanueva, Elena González García, Rafael Selgas Gutiérrez
BACKGROUND AND OBJECTIVE: Overhydration in hemodialysis patients is associated with cardiovascular mortality. Adequate removal of liquids and achievement of dry weight is one of the main goals of therapy. So far there are no clinical or laboratory parameters that are reliable, simple and affordable for its determination. The bioelectrical impedance vector analysis (BIVE) is a tool that allows identifying and monitoring hydration status, so the aim of this study was to use BIVE to adjust the intensity of ultrafiltration and achieve dry weight in hemodialysis patients...
2015: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
Adrian Paul Harrison, Vibeke Sødring Elbrønd, Kiwa Riis-Olesen, Else Marie Bartels
Multi-frequency BIA (mfBIA) equipment has been shown to be a non-invasive and reliable method to assess a muscle as a whole or at fibre level. In the equine world this may be the future method of assessment of training condition or of muscle injury. The aim of this study was to test if mfBIA reliably can be used to assess the condition of a horse's muscles in connection with health assessment, injury and both training and re-training. mfBIA measurements was carried out on 10 'hobby' horses and 5 selected cases with known anamnesis...
March 2015: Physiological Measurement
B Saugel, M Cecconi, J Y Wagner, D A Reuter
The determination of blood flow, i.e. cardiac output, is an integral part of haemodynamic monitoring. This is a review on noninvasive continuous cardiac output monitoring in perioperative and intensive care medicine. We present the underlying principles and validation data of the following technologies: thoracic electrical bioimpedance, thoracic bioreactance, vascular unloading technique, pulse wave transit time, and radial artery applanation tonometry. According to clinical studies, these technologies are capable of providing cardiac output readings noninvasively and continuously...
April 2015: British Journal of Anaesthesia
Samer R Abbas, Fansan Zhu, Nathan W Levin
Bioimpedance (BI) techniques for measuring normal hydration status (NHS) can be generally classified as (1) by frequency as single frequency at 50 kHz, BI analysis, and multifrequency BI spectroscopy and (2) by method as whole body (wrist to ankle) measurement and calf BI spectroscopy. The aim of this article was to review current BI methods for clinical practice in patients with end-stage of kidney disease. BI vector analysis using whole-body single-frequency BI at 50 kHz may be useful for population studies to indicate a range of degree of fluid loading and of nutritional status...
March 2015: Journal of Renal Nutrition
Joachim Kron, Daniel Schneditz, Til Leimbach, Sabine Aign, Susanne Kron
BACKGROUND: We developed a simple method to determine the absolute blood volume (V) during hemodialysis in everyday clinical practice and examined its relationship with volume overload, clinical relevance, and accuracy. METHODS: The increase in relative blood volume (RBVpost - RBVpre) measured before and after infusion of 240 ml of ultra-pure dialysate using the bolus function of a commercial online hemodiafiltration machine incorporating a relative blood volume monitor was applied to determine absolute blood volume...
2014: Blood Purification
Natascha J H Broers, Remy J H Martens, Tom Cornelis, Nanda M P Diederen, Peter Wabel, Frank M van der Sande, Karel M L Leunissen, Jeroen P Kooman
OBJECTIVES: The assessment of body composition (BC) in dialysis patients is of clinical importance given its role in the diagnosis of malnutrition and sarcopenia. Bioimpedance techniques routinely express BC as a 2-compartment (2-C) model distinguishing fat mass (FM) and fat-free mass (FFM), which may be influenced by the hydration of adipose tissue and fluid overload (OH). Recently, the BC monitor was introduced which applies a 3-compartment (3-C) model, distinguishing OH, adipose tissue mass, and lean tissue mass...
March 2015: Journal of Renal Nutrition
Constantine Tsigos, Charikleia Stefanaki, George I Lambrou, Dario Boschiero, George P Chrousos
BACKGROUND: This large cross-sectional, multi-centre study evaluated the association of body composition measurements by a novel dual frequency bioimpedance device (BIA-ACC) with chronic stress/inflammation biomarkers and the presence of medically unexplained symptoms (MUS). MATERIALS AND METHODS: Participants were adult Caucasians of both sexes and included 10,416 lean subjects with no MUS (Group A), 58,710 lean subjects with MUS (Group B) and 30,445 overweight/obese subjects with no MUS and excessive fat mass (FM) (Group C)...
February 2015: European Journal of Clinical Investigation
Sandra Castellano, Inés Palomares, Manuel Molina, Rafael Pérez-García, Pedro Aljama, Rosa Ramos, J Ignacio Merello
BACKGROUND: Fluid overload is an important and modifiable cardiovascular risk factor for haemodialysis patients. So far, the diagnosis was based on clinical methods alone. Nowadays, we have new tools to assess more objectively the hydration status of the patients on haemodialysis, as BCM (Body Composition Monitor). A Relative Overhydration (AvROH) higher than 15% (it means, Absolute Overhydration or AWOH higher than 2.5 Litres) is associated to greater risk in haemodialysis. However, there is a group of maintained hyperhydrated patients...
November 17, 2014: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
Guilherme Schettino, Rezende Ederlon, Ciro Leite Mendes, Alvaro Réa-Neto, Cid Marcos David, Suzana Margareth Ajeje Lobo, Alberto Barros, Eliézer Silva, Gilberto Friedman, José Luiz Gomes do Amaral, Marcelo Park, Maristela Monachini, Mirella Cristine de Oliveira, Murillo Santucci César Assunção, Nelson Akamine, Patrícia Veiga C Mello, Renata Andréa Pietro Pereira, Rubens Costa Filho, Sebastião Araújo, Sérgio Félix Pinto, Sérgio Ferreira, Simone Mattoso Mitushima, Sydney Agareno, Yuzeth Nóbrega de Assis Brilhante
BACKGROUND AND OBJECTIVES: Cardiac output and preload as absolute data do not offer helpful information about the hemodynamic of critically ill patients. However, monitoring the response of these variables to volume challenge or inotropic drugs is a very useful tool in the critical care setting, particularly for patients with signs of tissue hypoperfusion. Although PAC remains the " gold standard" to measure cardiac output and preload, new and alternative technologies were developed to evaluate these hemodynamic variables...
March 2006: Revista Brasileira de Terapia Intensiva
Sylvia Lehmann, Klaus Tenbrock, Simone Schrading, Robert Pikkemaat, Christoph Hoog Antink, Susana Santos, Jan Wilhelm Spillner, Norbert Wagner, Steffen Leonhardt
Electrical impedance tomography (EIT) is a radiation-free technique generating cross-sectional images of the lung. EIT visualizes global and regional ventilation by illustrating the distribution of electrical bioimpedance. With an electrode belt around the patient's thorax, rotating injection-couples of a harmless alternating current allow voltage measurement of the remaining electrodes. This enables the reconstruction of a tomogram with highly dynamic changes within ventilation. We report on a female six-year-old patient with cystic fibrosis and complete destruction of the upper and middle lobe of the right lung...
December 2014: Biomedizinische Technik. Biomedical Engineering
Chiara Canali, Arto Heiskanen, Haseena Bashir Muhammad, Per Høyum, Fred-Johan Pettersen, Mette Hemmingsen, Anders Wolff, Martin Dufva, Ørjan Grøttem Martinsen, Jenny Emnéus
A bioimpedance platform is presented as a promising tool for non-invasive real-time monitoring of the entire process of three-dimensional (3D) cell culturing in a hydrogel scaffold. In this study, the dynamics involved in the whole process of 3D cell culturing, starting from polymerisation of a bare 3D gelatin scaffold, to human mesenchymal stem cell (MSC) encapsulation and proliferation, was monitored over time. The platform consists of a large rectangular culture chamber with four embedded vertical gold plate electrodes that were exploited in two- and three terminal (2T and 3T) measurement configurations...
January 15, 2015: Biosensors & Bioelectronics
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