Search results for: Fansan Zhu

Items from 1 to 20 out of 22 results

article

Estimation of fluid status using three multifrequency bioimpedance methods in hemodialysis patients

Lin‐Chun Wang, Jochen G. Raimann, Xia Tao, Priscila Preciado, more

Hemodialysis International > 26 > 4 > 575 - 587

Introduction Segmental eight‐point bioimpedance has been increasingly used in practice. However, whether changes in bioimpedance analysis components before and after hemodialysis (HD) using this technique in a standing position is comparable to traditional whole‐body wrist‐to‐ankle method is still unclear. We aimed to investigate the differences between two eight‐point devices (InBody 770 and Seca...

article

Prevalence of fluid overload in an urban US hemodialysis population: A cross‐sectional study

Ulrich Moissl, Lemuel Rivera Fuentes, Mohamad I. Hakim, Manuel Hassler, more

Hemodialysis International > 26 > 2 > 264 - 273

Introduction Inadequate fluid status remains a key driver of cardiovascular morbidity and mortality in chronic hemodialysis (HD) patients. Quantification of fluid overload (FO) using bioimpedance spectroscopy (BIS) has become standard in many countries. To date, no BIS device has been approved in the United States for fluid status assessment in kidney patients. Therefore, no previous quantification...

chapter

Estimation of peripheral blood volume and interstitial volume in hemodialysis patients using bioimpedance techniques

Fansan Zhu, Peter Kotanko, Nathan W Levin

2017 39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) > 1389 - 1392

2017 39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

This paper describes a method to estimate interstitial fluid volume and peripheral blood volume (BV_P) 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...

article

Validating Body Fat Assessment by Bioelectric Impedance Spectroscopy in Taiwanese Hemodialysis Patients

Paik Seong Lim, Chang Hsu Chen, Fansan Zhu, Peter Kotanko, more

Journal of Renal Nutrition > 2017 > 27 > 1 > 37-44

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.Cross-sectional study.One hundred twenty-two adult patients receiving HD in a single hospital in Taiwan.We...

chapter

Estimation of arterio-venous access blood flow in hemodialysis patients using video image processing technique

Fansan Zhu, Schantel Williams, Hannah Putnam, Israel Campos, more

2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) > 207 - 210

2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

Assessment of arterio-venous fistula (AVF) blood flow (ABF) is vital in hemodialysis (HD) patients. Currently, no non-invasive and contact-free technique is available to accurately measure ABF in routine clinical practice. In this study, we developed a novel approach using video image processing (VIP) to measure the change in optic flow in the skin. We the tested the hypothesis that the change in...

article

Bioimpedance Can Solve Problems of Fluid Overload

Samer R. Abbas, Fansan Zhu, Nathan W. Levin

Journal of Renal Nutrition > 2015 > 25 > 2 > 234-237

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...

article

Prealbumin is Associated With Visceral Fat Mass in Patients Receiving Hemodialysis

Alessio Molfino, Steven B. Heymsfield, Fansan Zhu, Peter Kotanko, more

Journal of Renal Nutrition > 2013 > 23 > 6 > 406-410

Albumin and prealbumin are associated with nutritional status and inflammatory status. Each has a residual effect on mortality outcomes when included in regression models that include the other. Prealbumin is increased in the obese mouse model as a consequence of stabilization of prealbumin by retinol binding protein 4 (RBP4) secreted by adipocytes. We carried out this study to establish the contribution...

chapter

Modeling of change in blood volume and extracellular fluid volume during hemodialysis

Fansan Zhu, Franz Kappel, Edward F. Leonard, Peter Kotanko, more

2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) > 1506 - 1509

2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

Knowledge of dynamics of shift of fluid volume between intra- and extravascular compartments during hemodialysis (HD) is important for managing HD treatment to help patients approach dry weight without hypotension. The Relative blood volume (RBV) monitor indicates change in plasma volume based on the difference between ultrafiltration rate (UFR) and plasma refilling rate (PRR) during HD. However,...

chapter

Prediction of intradialytic morbid events in hemodialysis patients by monitoring the second derivative of relative blood volume

Fansan Zhu, Peter Kotanko, Stephan Thijssen, Nathan W. Levin

2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society > 1226 - 1229

2012 34th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

Intradialytic morbid events (IME) are a major issue affecting hemodialysis (HD) patients. Change in relative blood volume (RBV) reflects change in plasma refilling rate (PRR) and variability of ultrafiltration rate (UFR). However, degree of fluid overload influences this relationship. We propose a method using a second derivative of RBV (SDRBV) model to detect decrease in PRR during HD which is a...

article

Assessment of Extracellular Fluid Volume and Fluid Status in Hemodialysis Patients: Current Status and Technical Advances

Yanna Dou, Fansan Zhu, Peter Kotanko

Seminars in Dialysis > 25 > 4 > 377 - 387

The assessment of extracellular fluid volume (ECV) and fluid status is both important and challenging in hemodialysis patients. Extracellular fluid is distributed in two major sub‐compartments: interstitial fluid and plasma. A variety of methods are used to assess the ECV, with tracer dilution techniques considered gold standard. However, ECV defined as the distribution space of bromide, sodium, chloride,...

article

Determination of fluid status in haemodialysis patients with whole body and calf bioimpedance techniques

LI LIU, FANSAN ZHU, JOCHEN G RAIMANN, STEPHAN THIJSSEN, more

Nephrology > 17 > 2 > 131 - 140

Aim: The aim of this study was to demonstrate the ability of widely used bioimpedance techniques to assess dry weight (DW) and to predict a state of normal hydration in haemodialysis patients whose post‐dialysis weight had been gradually reduced from baseline in successive treatments over time. Methods: Calf bioimpedance spectroscopy (cBIS) was employed to determine DW (DW_cBIS) as defined by flattening...

chapter

Estimation of Body Hydration in Dialysis Patients Using a Calf Bioimpedance Method

Fansan Zhu, Li Liu, Peter Kotanko, Nathan W Levin

2010 International Conference on Biomedical Engineering and Computer Science > 1 - 4

International Conference on Biomedical Engineering and Computer Science (ICBECS 2010)

Accurate estimation of normal hydration (dry weight) in hemodialysis (HD) patients is an important factor affecting patient mortality. Bioimpedance spectroscopy (BIS) has been used to measure extracellular (R_e) and intracellular resistance (R_i) with a calf method (cBIS). An algorithm based on a fluid dynamic (FD) model has been developed to estimate change in intradialytic fluid volume in the calf...

article

Relationship Between Adiposity and Cardiovascular Risk Factors in Prevalent Hemodialysis Patients

George A. Kaysen, Peter Kotanko, Fansan Zhu, Shubho R. Sarkar, more

Journal of Renal Nutrition > 2009 > 19 > 5 > 357-364

Increased body mass index (BMI) is associated with reduced all-cause and cardiovascular (CV) mortality in hemodialysis (HD) patients, whereas CV risk increases with BMI in the general population. In the general population, obesity is associated with inflammation, decreased high-density lipoprotein (HDL) cholesterol, increased low-density lipoprotein (LDL) cholesterol, and triglycerides (TGs), all...

chapter

Estimation of Body Composition in Dialysis Patients Using Segmental Bioimpedance

Fansan Zhu, M. Carter, S. Thijssen, P. Kotanko, more

2009 3rd International Conference on Bioinformatics and Biomedical Engineering > 1 - 4

2009 3rd International Conference on Bioinformatics and Biomedical Engineering (iCBBE 2009)

Accurate estimation of body muscle, fat and fluid volumes in dialysis patients is an important factor to predict outcomes of the disease. Bioimpedance spectroscopy (BIS) has been used to measure extracellular (Re) and intracellular resistance (Ri) with whole body (wBIS) and segmental (sBIS) measurement. 40 stable HD patients (22 m / 18 f, age 54.7 plusmn11 yrs, height (H) 1.67 plusmn 0.94 m, weight...

article

Estimation of Adipose Pools in Hemodialysis Patients From Anthropometric Measures

George A. Kaysen, Peter Kotanko, Fansan Zhu, Shubho R. Sarkar, more

Journal of Renal Nutrition > 2008 > 18 > 6 > 473-478

Adiposity, measured as increased body mass index (BMI), is associated with reduced all-cause and cardiovascular (CV) mortality in hemodialysis (HD) patients, whereas CV risk increases with BMI in the general population. A major limitation of BMI as a measure of adiposity is its failure to distinguish muscle and fat compartments. In addition, the biology of different adipose compartments is not the...

article

147: Assessment of Extracellular Fluid Volume in Hemodialysis Patients by Using Calf Bioimpedance Spectroscopy

Li Liu, Jochen Raimann, Grzegorz Wystrychowski, Shaunak Dwivedi, more

American Journal of Kidney Diseases > 2008 > 51 > 4 > B64

chapter

Continuous Measurement of Calf Resistivity in Hemodialysis Patients using Bioimpedance Analysis

Fansan Zhu, Edward F Leonard, Mary Carter, Nathan W. Levin

2006 International Conference of the IEEE Engineering in Medicine and Biology Society > Supplement > 5126 - 5128

Conference Proceedings. Annual International Conference of the IEEE Engineering in Medicine and Biology Society

This study demonstrates a technique to measure electrical resistivity of the calf in hemodialysis (HD) patients during HD treatment. To continuously monitor and calculate resistivity, a model of calf volume based on its geometrical size and measurement of its electrical resistance has been developed. The model makes it possible to continuously estimate reduction of the calf circumference during HD...

chapter

Continuous Measurement of Calf Resistivity in Hemodialysis Patients using Bioimpedance Analysis

Fansan Zhu, Edward Leonard, Mary Carter, Nathan Levin

2006 International Conference of the IEEE Engineering in Medicine and Biology Society > 5126 - 5128

Conference Proceedings. Annual International Conference of the IEEE Engineering in Medicine and Biology Society

article

Assessment of body composition in long-term hemodialysis patients: Rationale and methodology

Shubho R. Sarkar, Martin K. Kuhlmann, Resham Khilnani, Fansan Zhu, more

Journal of Renal Nutrition > 2005 > 15 > 1 > 152-158

Protein-energy malnutrition is seen in patients with advanced stages of chronic kidney disease (CKD) and is even more pronounced in patients receiving long-term hemodialysis treatment. Both entities have great impact on patient morbidity and mortality. Analysis of body composition is an integral part of nutritional assessment and includes the estimation of muscle, fat, and fat-free mass, as well as...

article

Measurement of intraperitoneal volume by segmental bioimpedance analysis during peritoneal dialysis

Fansan Zhu, Nicholas A. Hoenich, George Kaysen, Claudio Ronco, more

American Journal of Kidney Diseases > 2003 > 42 > 1 > 167-172

Currently, ultrafiltration during peritoneal dialysis is determined from direct measurement of weight differences between the initial filling and final draining volumes. A new technique based on segmental bioimpedance analysis (SBIA) has been developed to accurately measure intraperitoneal volume continuously during peritoneal dialysis. Twenty-two peritoneal dialysis patients were studied in a...

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BIOIMPEDANCE (6)
BIOELECTRIC PHENOMENA (3)
BIOMEDICAL MEASUREMENT (3)
DRY WEIGHT (3)
BIOLOGICAL SYSTEM MODELING (2)
BODY FLUID (2)
CALF BIOIMPEDANCE SPECTROSCOPY (2)
CIRCUMFERENCE (2)
DIALYSIS PATIENTS (2)
ELECTRICAL RESISTIVITY (2)
EXTRACELLULAR (2)
FLUID STATUS (2)
HIGH DEFINITION VIDEO (2)
KIDNEY (2)
RESISTIVITY (2)
SKIN (2)
ADAPTIVE FILTERS (1)
BCM (1)
BIOCHEMISTRY (1)
BIOLOGICAL FLUID DYNAMICS (1)
BIOMEDICAL MRI (1)
BLOOD FLOW (1)
BODY COMPOSITION (1)
BODY HYDRATION ESTIMATION (1)
BODY MASS INDEX (1)
BODY MUSCLE ESTIMATION (1)
CALF CIRCUMFERENCE MEASUREMENT (1)
CALF ELECTRICAL RESISTIVITY MEASUREMENT (1)
CALF VOLUME (1)
CELLULAR BIOPHYSICS (1)
CENTRAL PROCESSING UNIT (1)
COMPUTERS (1)
CONTINUOUS FLOW PERITONEAL DIALYSIS (PD) (1)
CONTINUOUS MONITORING (1)
CONVERTERS (1)
CURRENT MEASUREMENT (1)
EIGHT‐POINT METHOD (1)
ELECTRIC IMPEDANCE MEASUREMENT (1)
ELECTRIC RESISTANCE MEASUREMENT (1)
ELECTRICAL RESISTANCE MEASUREMENT (1)
ELECTROENCEPHALOGRAPHY (1)
ESTIMATION (1)
EXCESS FLUID VOLUME (1)
EXTRACELLULAR RESISTANCE (1)
EXTRACELLULAR RESISTANCE MEASUREMENT (1)
FLUID DYNAMIC MODEL (1)
FLUID OVERLOAD (1)
FLUID VOLUMES (1)
FLUIDS (1)
GEOMETRICAL SIZE (1)
GOLD (1)
HAEMODIALYSIS (1)
HEMODIALYSIS (1)
HEMODIALYSIS TREATMENT (1)
IMAGE PROCESSING (1)
IMMUNE SYSTEM (1)
INTRACELLULAR RESISTANCE (1)
INTRACELLULAR RESISTANCE MEASUREMENT (1)
INTRADIALYTIC FLUID VOLUME (1)
MAGNETIC RESONANCE IMAGING (1)
MEDICAL SIGNAL PROCESSING (1)
METALS (1)
MRI (1)
MULTI-FREQUENCY BIOIMPEDANCE DEVICE (1)
MULTIPLE LINEAR REGRESSION MODEL (1)
MUSCLE (1)
OPTICAL FILTERS (1)
OPTICAL IMAGING (1)
OPTICAL VARIABLES MEASUREMENT (1)
OPTIMAL HYDRATION STATES (1)
OVERHYDRATION (1)
PATIENT MONITORING (1)
PATIENT TREATMENT (1)
PERITONEAL DIALYSIS (PD) (1)
PHYSIOLOGICAL MODELS (1)
PREAMPLIFIERS (1)
REGRESSION ANALYSIS (1)
SEGMENTAL BIOIMPEDANCE (1)
SEGMENTAL BIOIMPEDANCE SPECTROSCOPY (1)
SOLVATION (1)
SYSTOLIC BLOOD PRESSURE (1)
TRACER DILUTION ASSAYS (1)
ULTRAFILTRATION VOLUME (UFV) (1)
WHOLE BODY BIOIMPEDANCE SPECTROSCOPY (1)
WHOLE BODY BIS (1)
XITRON 4200 (1)
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Elsevier (8)
Wiley (4)

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Search results for: Fansan Zhu

Estimation of fluid status using three multifrequency bioimpedance methods in hemodialysis patients

Prevalence of fluid overload in an urban US hemodialysis population: A cross‐sectional study

Estimation of peripheral blood volume and interstitial volume in hemodialysis patients using bioimpedance techniques

Validating Body Fat Assessment by Bioelectric Impedance Spectroscopy in Taiwanese Hemodialysis Patients

Estimation of arterio-venous access blood flow in hemodialysis patients using video image processing technique

Bioimpedance Can Solve Problems of Fluid Overload

Prealbumin is Associated With Visceral Fat Mass in Patients Receiving Hemodialysis

Modeling of change in blood volume and extracellular fluid volume during hemodialysis

Prediction of intradialytic morbid events in hemodialysis patients by monitoring the second derivative of relative blood volume

Assessment of Extracellular Fluid Volume and Fluid Status in Hemodialysis Patients: Current Status and Technical Advances

Determination of fluid status in haemodialysis patients with whole body and calf bioimpedance techniques

Estimation of Body Hydration in Dialysis Patients Using a Calf Bioimpedance Method

Relationship Between Adiposity and Cardiovascular Risk Factors in Prevalent Hemodialysis Patients

Estimation of Body Composition in Dialysis Patients Using Segmental Bioimpedance

Estimation of Adipose Pools in Hemodialysis Patients From Anthropometric Measures

147: Assessment of Extracellular Fluid Volume in Hemodialysis Patients by Using Calf Bioimpedance Spectroscopy

Continuous Measurement of Calf Resistivity in Hemodialysis Patients using Bioimpedance Analysis

Continuous Measurement of Calf Resistivity in Hemodialysis Patients using Bioimpedance Analysis

Assessment of body composition in long-term hemodialysis patients: Rationale and methodology

Measurement of intraperitoneal volume by segmental bioimpedance analysis during peritoneal dialysis

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