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Bioimpedence

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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/28399019/pathophysiology-and-implications-of-intradialytic-hypertension
#4
Peter Noel Van Buren
PURPOSE OF REVIEW: Intradialytic hypertension occurs regularly in 10--15% of hemodialysis patients. A large observational study recently showed that intradialytic hypertension of any magnitude increased mortality risk comparable to the most severe degrees of intradialytic hypotension. The present review review discusses the most recent evidence underlying the pathophysiology of intradialytic hypertension and implications for its management. RECENT FINDINGS: Patients with intradialytic hypertension typically have small interdialytic weight gains, but bioimpedance spectroscopy shows these patients have significant chronic extracellular volume excess...
April 8, 2017: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/28398368/-the-apulia-hf-multicenter-study-efficacy-of-a-management-protocol-shared-between-hospital-and-territorial-health-services-for-acute-decompensated-heart-failure-patients
#5
Massimo Iacoviello, Sergio Pede, Nadia Aspromonte, Francesca Bux, Mariligia Panunzio, Vittorio Donadeo, Alessandra De Castro, Ettore Antoncecchi, Nicola D'Amato, Elisabetta Squiccimarro, Bartolomeo Silvestri, Lucia Malerba, Luisa De Gennaro, Giuseppe Modugno, Elena Serafini, Biagio Curci, Dario Grande, Furio Colivicchi, Giovanni De Luca, Gianfranco Ignone, Carlo D'Agostino, Pasquale Caldarola
BACKGROUND: The aim of this study was to demonstrate the efficacy of a management model to reduce hospitalizations in patients recently admitted for acute decompensated heart failure. METHODS: The management model was based on a close integration between hospital and territory health services. Clinical evaluation, ECG, echocardiographic findings, total body bioimpedance and brain natriuretic peptide serum levels were used to assess clinical stability of patients at discharge and during follow-up...
February 2017: Giornale Italiano di Cardiologia
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
#6
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/28395286/heart-failure-with-preserved-and-reduced-ejection-fraction-in-hemodialysis-patients-prevalence-disease-prediction-and-prognosis
#7
Marlies Antlanger, Stefan Aschauer, Chantal Kopecky, Manfred Hecking, Johannes J Kovarik, Johannes Werzowa, Julia Mascherbauer, Bernd Genser, Marcus D Säemann, Diana Bonderman
BACKGROUND/AIMS: Heart failure (HF) is a main cause of mortality of hemodialysis (HD) patients. While HF with reduced ejection fraction (HFrEF) is known to only affect a minority of patients, little is known about the prevalence, associations with clinical characteristics and prognosis of HF with preserved ejection fraction (HFpEF). METHODS: We included 105 maintenance HD patients from the Medical University of Vienna into this prospective single-center cohort study and determined the prevalence of HFpEF (per the 2013 criteria of the European Society of Cardiology) and HFrEF (EF <45%), using standardized post-HD transthoracic echocardiography...
April 11, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/28394194/the-higher-the-insulin-resistance-the-lower-the-cardiac-output-in-men-with-type-1-diabetes-during-the-maximal-exercise-test
#8
Pawel Niedzwiecki, Dariusz Naskret, Stanislaw Pilacinski, Maciej Pempera, Aleksandra Uruska, Anna Adamska, Dorota Zozulinska-Ziolkiewicz
BACKGROUND: The aim of this study was to assess the hemodynamic parameters analyzed in bioimpedance cardiography during maximal exercise in patients with type 1 diabetes differing in insulin resistance. METHODS: The study group consisted of 40 men with type 1 diabetes. Tissue sensitivity to insulin was assessed on the basis of the glucose disposal rate (GDR) analyzed during hyperinsulinemic-euglycemic clamp. Patients were divided into groups with GDR <4.5 mg/kg/min (G1 group-lower insulin sensitivity) and GDR ≥4...
April 10, 2017: Metabolic Syndrome and related Disorders
https://www.readbyqxmd.com/read/28387710/in-vivo-bioimpedance-spectroscopy-characterization-of-healthy-hemorrhagic-and-ischemic-rabbit-brain-within-10-hz-1-mhz
#9
Lin Yang, Wenbo Liu, Rongqing Chen, Ge Zhang, Weichen Li, Feng Fu, Xiuzhen Dong
Acute stroke is a serious cerebrovascular disease and has been the second leading cause of death worldwide. Conventional diagnostic modalities for stroke, such as CT and MRI, may not be available in emergency settings. Hence, it is imperative to develop a portable tool to diagnose stroke in a timely manner. Since there are differences in impedance spectra between normal, hemorrhagic and ischemic brain tissues, multi-frequency electrical impedance tomography (MFEIT) shows great promise in detecting stroke. Measuring the impedance spectra of healthy, hemorrhagic and ischemic brain in vivo is crucial to the success of MFEIT...
April 7, 2017: Sensors
https://www.readbyqxmd.com/read/28387633/smart-bioimpedance-controlled-craniotomy-concept-and-first-experiments
#10
Annegret Niesche, Meiko Müller, Fritz Ehreiser, Daniel Teichmann, Steffen Leonhardt, Klaus Radermacher
Craniotomy is part of many neurosurgical interventions to create surgical access to intracranial structures. The procedure conventionally bears a high risk of unintended dural tears or damage of the soft tissue underneath the bone. A new synergistically controlled instrument has recently been introduced to address this problem by combining a soft tissue preserving saw with an automatic cutting depth control. Many approaches are known to obtain the information required on the local bone thickness. However, they suffer from unsatisfactory robustness against disturbances occurring during surgery and many approaches require additional intra- or preoperative steps in the workflow...
March 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28380204/pendelluft-diagnosed-from-ventilator-weaning-indexes-obtained-through-bioelectrical-impedance-tomography-a-case-report
#11
Fabiana Aparecida Lopes, Lidiane Andrade Monteiro de Souza, Juliana Tavares Neves Bernardi, Carlos Eduardo Rocha, Luciana Castilho de Figueiredo, Ana Paula Ragonete Dos Anjos Agostini, Desanka Dragosavac, Daniela Cristina Dos Santos Faez
CONTEXT: Today, through major technological advances in diagnostic resources within medicine, evaluation and monitoring of clinical parameters at the patient's bedside in intensive care units (ICUs) has become possible. CASE REPORT: This case report presents results and interpretations from predictive mechanical ventilation weaning indexes obtained through monitoring using chest electrical bioimpedance tomography. These indexes included maximum inspiratory pressure, maximum expiratory pressure, shallow breathing index and spontaneous breathing test...
April 3, 2017: São Paulo Medical Journal, Revista Paulista de Medicina
https://www.readbyqxmd.com/read/28376734/sleep-apnea-prevalence-in-chronic-kidney-disease-association-with-total-body-water-and-symptoms
#12
Hsin-Chia Huang, Giles Walters, Girish Talaulikar, Derek Figurski, Annette Carroll, Mark Hurwitz, Krishna Karpe, Richard Singer
BACKGROUND: Sleep apnea is common and associated with poor outcome in severe chronic kidney disease, but validated screening tools are not available. Our objectives were to determine the prevalence of sleep apnea in this population, to assess the validity of screening for sleep apnea using an ApneaLink device and to investigate the relationship of sleep apnea to; symptoms, spirometry and body water. METHODS: Patients with glomerular filtration rate ≤30 mL/min/1...
April 4, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28374726/-the-association-between-physical-inactivity-and-other-behavioural-risk-factors-of-the-development-of-chronic-non-communicative-diseases-among-the-students
#13
A P Anishchenko, A N Arkhangel'skaya, D A Pustovalov, E V Rogoznaya, A L Urakov, K G Gurevich
AIM: The objective of the present study was to evaluate the possible association between the physical inactivity and other behavioural risk factors of the development of chronic non- communicable diseases among the young persons. MATERIAL AND METHODS: A total of 216 1-2 grade students at the mean age of 18.8±1.3 years including 136 women and 80 men educated at A.I. Evdokimov Moscow State Medical Stomatological University, Ministry of Health of the Russian Federation, were recruited for the examination...
2017: Voprosy Kurortologii, Fizioterapii, i Lechebnoĭ Fizicheskoĭ Kultury
https://www.readbyqxmd.com/read/28372680/the-impact-of-anesthesia-on-hemodynamic-and-volume-changes-in-operative-hysteroscopy-a-bioimpedance-randomized-study
#14
Ehab E Moharram, Ahmed M El Attar, Moustafa A Kamel
BACKGROUND: Operative hysteroscopy is accompanied by the use of distention medium. Its absorption can lead to volume overload and hemodynamic disturbances that can lead to serious complications. We investigated the impact of the type of anesthesia on decreasing these complications with the use of noninvasive thoracic bioimpedance. DESIGN: A prospective, randomized, blind study. METHOD: Sixty women, with American Society of Anesthesiologists classifications I-III, undergoing operative hysteroscopy were randomly allocated into 2 groups...
May 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28372500/clinical-significance-of-bioimpedance-spectroscopy-in-critically-ill-patients
#15
Shang-Feng Yang, Ching-Min Tseng, I-Fan Liu, Shin-Hung Tsai, Wein-Shung Kuo, Tien-Ping Tsao
BACKGROUND: Early fluid resuscitation is a key aspect in the successful management of critically ill patients, but the optimal goal for volume control after the acute stage of critical illness remains unclear. This study aimed to evaluate the prognostic value of bioimpedance spectrometry for fluid management in critically ill patients. METHODS: In this prospective observational study, patients who consented to participate were screened within the first 24 hours of admission to a medical intensive care unit (ICU) from February 4, 2015, to January 31, 2016...
January 1, 2017: Journal of Intensive Care Medicine
https://www.readbyqxmd.com/read/28371518/clinical-utility-of-bioimpedance-analysis-in-liver-cirrhosis
#16
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/28361753/handgrip-strength-and-weight-predict-long-term-mortality-in-acute-kidney-injury-patients
#17
S P Xavier, C R Goes, M N B Bufarah, A L Balbi, D Ponce
INTRODUCTION: Surviving acute kidney (AKI) patients have a higher late mortality compared with those admitted without AKI. The negative impact of malnutrition on the early outcome of AKI patients has recently been confirmed by various studies. However, its impact after hospital discharge has not been studied. The objective of the study was to determine the role of anthropometric measurements and handgrip strength as predictors of mortality 180 days after discharge. METHODOLOGY: Eighty-two survivors AKI patients who were older than 18 y old and followed by AKI team were prospectively evaluated...
February 2017: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28346864/application-of-the-l-dex-score-for-the-assessment-of-bilateral-leg-edema
#18
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/28346854/breast-cancer-related-lymphedema-differentiating-fat-from-fluid-using-magnetic-resonance-imaging-segmentation
#19
Yuka Sen, Yi Qian, Louise Koelmeyer, Robert Borotkanics, Robyn Ricketts, Helen Mackie, Thomas C Lam, Kevin Ho Shon, Hiroo Suami, John Boyages
BACKGROUND: Lymphedema is an iatrogenic complication after breast cancer treatment in which lymph fluid in the affected limb progresses to fat deposition and fibrosis that are amenable to liposuction treatment. Magnetic resonance imaging (MRI) for lymphedema can differentiate fat tissue from fluid, but estimating relative volumes remains problematic. METHODS AND RESULTS: Patients underwent routine bilateral arm MRI both before and after liposuction for advanced lymphedema...
March 27, 2017: Lymphatic Research and Biology
https://www.readbyqxmd.com/read/28346852/preoperative-lymphedema-related-risk-factors-in-early-stage-breast-cancer
#20
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
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