keyword
MENU ▼
Read by QxMD icon Read
search

Bioimpedance spectroscopy

keyword
https://www.readbyqxmd.com/read/28904881/numerical-expression-of-volume-status-using-the-bioimpedance-ratio-in-continuous-ambulatory-peritoneal-dialysis-patients-a-pilot-study
#1
Mun Jang, Won Hak Kim, Jung Hee Lee, Mi Soon Kim, Eun Kyoung Lee, So Mi Kim, Jai Won Chang
BACKGROUND: Volume overload results in higher mortality rates in patients on continuous ambulatory peritoneal dialysis (CAPD). The ratio of bioimpedance (RBI) might be a helpful parameter in adjusting dry body weight in CAPD patients. This study examined whether it is possible to distinguish between non-hypervolemic status and hypervolemic status in CAPD patients by using only RBI. METHODS: RBI was calculated as follows: RBI = impedance at 50 kHz/impedance at 500 kHz...
September 2017: Kidney Research and Clinical Practice
https://www.readbyqxmd.com/read/28902883/association-between-e-e%C3%A2-ratio-and-fluid-overload-in-patients-with-predialysis-chronic-kidney-disease
#2
Jae-Seok Kim, Jae-Won Yang, Jin Sae Yoo, Seung Ok Choi, Byoung-Geun Han
BACKGROUND: Chronic fluid overload is common in patients with chronic kidney disease (CKD) and can with time lead to diastolic dysfunction and heart failure. We investigated whether markers of fluid status, such as NT-proBNP and bioimpedance spectroscopy (BIS), can predict echocardiographic findings of diastolic dysfunction in non-dialysis CKD5 patients. METHODS: BIS, echocardiography, and measurement of serum NT-proBNP were performed in patients with non-dialysis CKD stage 5 at a single study visit...
2017: PloS One
https://www.readbyqxmd.com/read/28883854/predictive-abilities-of-baseline-measurements-of-fluid-overload-assessed-by-bioimpedance-spectroscopy-and-serum-n-terminal-pro-b-type-natriuretic-peptide-for-mortality-in-hemodialysis-patients
#3
Ianis Siriopol, Dimitrie Siriopol, Luminita Voroneanu, Adrian Covic
INTRODUCTION: Fluid overload is one of the most important, yet modifiable, risk factors associated with worse outcomes in hemodialysis (HD) patients. However, its precise assessment in clinical practice is still under investigation. MATERIAL AND METHODS: This is an observational prospective study which included 285 stable patients with end-stage renal disease on standard thrice-weekly HD therapy. Overhydration was assessed by the combination of relative fluid overload (RFO), using bioimpedance spectroscopy, and N-terminal pro-B-type natriuretic peptide (NT-proBNP)...
August 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/28851933/intravenous-fluid-challenge-decreases-intracellular-volume-a-bioimpedance-spectroscopy-based-crossover-study-in-healthy-volunteers
#4
Matthäus Ernstbrunner, Barbara Kabon, Oliver Zotti, Markus Zeitlinger, Carolin Berner, Georg Hinterholzer, Marcus Säemann, Florian Frommlet, Edith Fleischmann, Manfred Hecking
The effects of intravenous fluid therapy on fluid compartments and hemodynamics of the human body remain enigmatic. We therefore tested the efficacy of bioimpedance spectroscopy in a crossover study, where 15 males received 0.5 ml/kg/min ELO-MEL-isoton (osmolarity = 302 mosmol/l) during 60 minutes, or nothing at all. In group "Fluid", fluid load increased from -0.2 ± 1.0 l extracellular volume at baseline to its maximum of 1.0 ± 0.9 l in minute 70, and remained continuously elevated throughout minute 300...
August 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28834362/is-high-volume-online-hemodiafiltration-associated-with-malnutrition
#5
Nicolás Macías, Almudena Vega, Soraya Abad, Alba Santos, Santiago Cedeño, Tania Linares, Ana María García-Prieto, Inés Aragoncillo, Claudia Yuste, Juan Manuel López-Gómez
Chronic malnutrition is a common problem in patients with end-stage renal disease on hemodialysis. Some studies have reported albumin loss into dialysis fluid during postdilution online hemodiafiltration (OL-HDF). The aim of the study was to assess the nutritional status of patients on high-volume OL-HDF and to demonstrate that higher convective clearances are not associated with malnutrition due to possible loss of nutrients with ultrafiltration. Demographic and clinical data, corporal composition with bioimpedance spectroscopy, dialysis features, albumin loss into dialysis fluid and laboratory parameters were collected in twenty-eight patients with ESRD undergoing postdilution OL-HDF with stable convective volumes over 28 L/session...
August 2017: Therapeutic Apheresis and Dialysis
https://www.readbyqxmd.com/read/28831632/utilization-of-bioimpedance-spectroscopy-in-the-prevention-of-chronic-breast-cancer-related-lymphedema
#6
David I Kaufman, Chirag Shah, Frank A Vicini, Marisa Rizzi
BACKGROUND: This analysis was performed to assess the impact of early intervention following prospective surveillance using bioimpedance spectroscopy (BIS) to detect and manage breast cancer-related lymphedema (BCRL). METHODS: From 8/2010 to 12/2016, 206 consecutive patients were evaluated with BIS. The protocol included pre-operative assessment with L-Dex as well as post-operative assessments at regular intervals. Patients with L-Dex scores >10 from baseline were considered to have subclinical BCRL and were treated with over-the-counter (OTC) compression sleeve for 4 weeks...
August 22, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28817729/comparison-of-bioimpedance-spectroscopy-and-x-ray-micro-computed-tomography-for-total-fat-volume-measurement-in-mice
#7
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/28781137/bioimpedance-spectroscopy-a-technique-to-monitor-interventions-for-swelling-in-minor-burns
#8
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/28764509/note-temperature-effects-in-the-modified-howland-current-source-for-electrical-bioimpedance-spectroscopy
#9
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
#10
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/28741804/does-whey-protein-supplementation-improve-the-nutritional-status-in-hypoalbuminemic-peritoneal-dialysis-patients
#11
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
https://www.readbyqxmd.com/read/28716046/blood-volume-monitored-regulation-of-ultrafiltration-to-decrease-the-dry-weight-in-fluid-overloaded-hemodialysis-patients-a-randomized-controlled-trial
#12
Marlies Antlanger, Peter Josten, Michael Kammer, Isabella Exner, Katharina Lorenz-Turnheim, Manfred Eigner, Gernot Paul, Renate Klauser-Braun, Gere Sunder-Plassmann, Marcus D Säemann, Manfred Hecking
BACKGROUND: Because chronic fluid volume overload is associated with higher mortality, we tested whether blood-volume monitored regulation of ultrafiltration and dialysate conductivity (UCR) and/or regulation of ultrafiltration and temperature (UTR) would facilitate dry weight reduction, in comparison to conventional dialysis (CONV). METHODS: We carried out a multicenter, 4-week, randomized controlled trial in hemodialysis patients ≥15% above normal extracellular fluid volume (ECV), per bioimpedance spectroscopy, who were randomized 1:1:1...
July 17, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28684015/bioimpedance-spectroscopy-measurements-of-phase-angle-and-height-for-age-are-predictive-of-outcome-in-children-following-surgery-for-congenital-heart-disease
#13
L V Marino, R Meyer, M Johnson, C Newell, C Johnstone, A Magee, K Sykes, S A Wootton, J V Pappachan
OBJECTIVE: Children with congenital heart disease (CHD) are often growth restricted (low weight- and/or height-for-age) which may increase risk of poor post operative resilience. Bioelectrical impedance spectroscopy (BIS) has been used to determine body composition in different clinical settings and has been shown to mark differences in nutritional state and clinical outcome. In disease conditions were fluid is not normally distributed it is proposed that raw impedance values and BIS derived phase-angle may serve as prognostic indicators of clinical outcome...
June 28, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28651645/lead-field-theory-provides-a-powerful-tool-for-designing-microelectrode-array-impedance-measurements-for-biological-cell-detection-and-observation
#14
Marcel Böttrich, Jarno M A Tanskanen, Jari A K Hyttinen
BACKGROUND: Our aim is to introduce a method to enhance the design process of microelectrode array (MEA) based electric bioimpedance measurement systems for improved detection and viability assessment of living cells and tissues. We propose the application of electromagnetic lead field theory and reciprocity for MEA design and measurement result interpretation. Further, we simulated impedance spectroscopy (IS) with two- and four-electrode setups and a biological cell to illustrate the tool in the assessment of the capabilities of given MEA electrode constellations for detecting cells on or in the vicinity of the microelectrodes...
June 26, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28626257/multi-center-rater-blinded-study-of-early-intervention-with-the-hand-incubator-for-breast-cancer-related-lymphedema-the-beat-edema-trial-proposal-of-a-research-protocol
#15
Hisao Ishii, Katsuyuki Iwatsuki, Masahiro Tatebe, Hitoshi Hirata, Toyone Kikumori, Nobuyuki Tsunoda, Ikuo Hyodo, Tomoko Ogawa, Naoki Unno
Postoperative lymphedema is considered irreversible once it has developed, and significantly lowers the patient's quality of life. However, lymphatic function has recently been clarified, and it is possible that lymphedema can be cured if early treatment is started. This two-arm randomized clinical trial (UMIN000026124) will prospectively evaluate 24 patients with early-stage breast cancer-related lymphedema at the Nagoya University Hospital and Aichi Cancer Center Hospital. The eligibility criteria will be patients who are diagnosed with stage 0-1 breast cancer-related lymphedema, as defined by the International Society of Lymphology, within 12 weeks after breast cancer surgery...
February 2017: Nagoya Journal of Medical Science
https://www.readbyqxmd.com/read/28624154/lymphedema-following-gynecological-cancer-results-from-a-prospective-longitudinal-cohort-study-on-prevalence-incidence-and-risk-factors
#16
Sandra C Hayes, Monika Janda, Leigh C Ward, Hildegard Reul-Hirche, Megan L Steele, Johnathan Carter, Michael Quinn, Bruce Cornish, Andreas Obermair
OBJECTIVE: Cancer-related lymphedema is a debilitating condition that adversely influences function, health and quality of life. The purpose of this study was to assess the prevalence, incidence, and risk factors of lower-limb lymphedema pre- through to 24months post-surgery for gynecological cancer. METHODS: A clinic-based sample of women (n=408) with gynecological cancer participated in a prospective, longitudinal study (2008-2011) using self-reported measures (swelling in one or both legs) and objectively measured lymphedema (bioimpedance spectroscopy) at baseline (pre-surgery), six weeks-three months, 6-12months, and 15-24months post-surgery...
June 14, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28525669/relationship-between-bioimpedance-determined-body-composition-and-peritoneal-transport-in-peritoneal-dialysis
#17
Bernardo M da Costa, Gloria Del Peso, Maria Auxiliadora Bajo, Gilda Carreño, Marta Ferreira, Carina Ferreira, Rafael Selgas
PURPOSE: In peritoneal dialysis (PD) patients, body fluid homeostasis is dependent on peritoneal elimination of water and solutes. Patients with less favorable peritoneal transport parameters should be more overhydrated. Despite this, the association between faster transport and overhydration (OH) is weak, and the factors that influence hydration status are still poorly characterized. Modified peritoneal equilibration tests (PET) offer us new parameters that might correlate better with hydration status, like free water transport (FWT)...
May 18, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28473637/chronic-fluid-overload-and-mortality-in-esrd
#18
Carmine Zoccali, Ulrich Moissl, Charles Chazot, Francesca Mallamaci, Giovanni Tripepi, Otto Arkossy, Peter Wabel, Stefano Stuard
Sustained fluid overload (FO) is considered a major cause of hypertension, heart failure, and mortality in patients with ESRD on maintenance hemodialysis. However, there has not been a cohort study investigating the relationship between chronic exposure to FO and mortality in this population. We studied the relationship of baseline and cumulative FO exposure over 1 year with mortality in 39,566 patients with incident ESRD in a large dialysis network in 26 countries using whole-body bioimpedance spectroscopy to assess fluid status...
August 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28471955/serum-vegf-c-levels-as-a-candidate-biomarker-of-hypervolemia-in-chronic-kidney-disease
#19
Tuncay Sahutoglu, Tamer Sakaci, Nuri B Hasbal, Elbis Ahbap, Ekrem Kara, Mutlu C Sumerkan, Mustafa Sevinc, Cuneyt Akgol, Yener Koc, Taner Basturk, Abdulkadir Unsal
Attaining and maintaining optimal "dry weight" is one of the principal goals during maintenance hemodialysis (MHD). Recent studies have shown a close relationship between Na load and serum vascular endothelial growth factor-C (VEGF-C) levels; thus, we aimed to investigate the role of VEGF-C as a candidate biomarker of hypervolemia. Physical examination, basic laboratory tests, N-terminal pro b-type natriuretic peptide (NT-ProBNP), echocardiography, and bioimpedance spectroscopy data of 3 groups of study subjects (euvolemic MHD patients, healthy controls, and hypervolemic chronic kidney disease [CKD] patients) were analyzed...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28466665/comparison-of-skinfold-thicknesses-and-bioimpedance-spectroscopy-to-dual-energy-x-ray-absorptiometry-for-the-body-fat-measurement-in-patients-with-chronic-kidney-disease
#20
Aleksandra Rymarz, Katarzyna Szamotulska, Stanisław Niemczyk
BACKGROUND/OBJECTIVES: The aim of the study was to compare the amount of body fat measured by skinfold thickness (SFT) and bioimpedance spectroscopy (BIS) with dual-energy x-ray absorptiometry (DXA) as a reference method. METHODS: Forty-eight patients undergoing hemodialysis treatment thrice-weekly for at least 3 months (HD group) with a mean age of 59.8 ± 15.5 years, 61 patients with chronic kidney disease (CKD) with an estimated glomerular filtration rate (eGFR) <30 mL/min/1...
August 2017: Nutrition in Clinical Practice
keyword
keyword
75643
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"