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https://www.readbyqxmd.com/read/28328660/addressing-the-barriers-to-bioimpedance-spectroscopy-use-in-major-burns-alternate-electrode-placement
#1
Pippa Kenworthy, Tiffany L Grisbrook, Michael Phillips, William Gibson, Fiona M Wood, Dale W Edgar
Bioimpedance spectroscopy (BIS) is a method used to assess body composition and fluid distribution. As a technology for measurement of fluid shifts during acute burn resuscitation, there are potential barriers to its use due to the location of wounds. This study aimed to determine whether alternate electrode positions were a suitable alternative compared to standardized (manufacturer) positions in moderate to large size burns for the measurement of BIS resistance and fluid changes. BIS measurements were collected in standard and alternate electrode placements and in an open wound and Acticoat™ dressing condition...
March 15, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28320979/exposure-to-4-4-methylene-bis-2-chloroaniline-mboca-in-new-south-wales-australia
#2
Kiran Shankar, Vivian Fung, Mahinda Seneviratne, Gregory E O'Donnell
OBJECTIVES: This study was conducted to determine the level of exposure of 4, 4'-methylene bis(2-chloroaniline) (MbOCA) in New South Wales (NSW), Australia. METHODS: An integrated occupational hygiene and biological monitoring program were used to assess the workers' exposure to MbOCA via inhalation, ingestion and dermal contact. This was conducted by personal air monitoring, static air monitoring and surface contamination monitoring of the work environment and biological monitoring of the workers' exposure to MbOCA at nine workplaces in NSW...
March 17, 2017: Journal of Occupational Health
https://www.readbyqxmd.com/read/28320196/extended-timed-up-and-go-assessment-as-a-clinical-indicator-of-cognitive-state-in-parkinson-s-disease
#3
Tess Evans, Alexa Jefferson, Michelle Byrnes, Sue Walters, Soumya Ghosh, Frank L Mastaglia, Brian Power, Ryan S Anderton
OBJECTIVE: To evaluate a modified extended Timed Up and Go (extended-TUG) assessment against a panel of validated clinical assessments, as an indicator of Parkinson's disease (PD) severity and cognitive impairment. METHODS: Eighty-seven participants with idiopathic PD were sequentially recruited from a Movement Disorders Clinic. An extended-TUG assessment was employed which required participants to stand from a seated position, walk in a straight line for 7m, turn 180° and then return to the start, in a seated position...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28298244/frailty-related-to-anesthesia-guided-by-the-index-bispectral-frail-study-study-protocol-for-a-randomized-controlled-trial
#4
Morgan Le Guen, Marie Herr, Antoine Bizard, Caroline Bichon, Nathalie Boichut, Thierry Chazot, Ngai Liu, Joel Ankri, Marc Fischler
BACKGROUND: Currently, patients older than 60 years of age represent 25% of the population and are at an increased risk during surgery. Therefore, reducing postoperative morbidity and mortality is a major concern in medical research and practice. Dependence on caregivers and cognitive impairment represent two major risk factors in the elderly, especially in frail patients after surgery under general anesthesia. In this context, continuous monitoring of the depth of anesthesia using a bispectral index (BIS) sensor may reduce the occurrence of impairments by gaining better control of the anesthetic depth...
March 16, 2017: Trials
https://www.readbyqxmd.com/read/28275163/axonal-degeneration-in-retinal-ganglion-cells-is-associated-with-a-membrane-polarity-sensitive-redox-process
#5
Mohammadali Almasieh, Maria-Magdalena Catrinescu, Loïc Binan, Santiago Costantino, Leonard A Levin
Axonal degeneration is a pathophysiological mechanism common to several neurodegenerative diseases. The slow Wallerian degeneration (Wld(S)) mutation, which results in reduced axonal degeneration in the central and peripheral nervous systems, has provided insight for a redox-dependent mechanism by which axons undergo self-destruction. We studied early molecular events in axonal degeneration with single-axon laser axotomy and time-lapse imaging, monitoring the initial changes in transected axons of purified retinal ganglion cells (RGCs) from wild-type and Wld(S) rat retinas using a polarity-sensitive annexin-based biosensor (annexin B12-Cys101,Cys260-N,N'-dimethyl-N-(iodoacetyl)-N'-(7-nitrobenz-2-oxa-1,3-diazol-4-yl) ethylenediamine)...
March 8, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28269717/assessment-of-sedation-analgesia-by-means-of-poincare%C3%AC-analysis-of-the-electroencephalogram
#6
Jose D Bolanos, Montserrat Vallverdu, Pere Caminal, Daniel F Valencia, Xavi Borrat, Pedro L Gambus, Jose F Valencia
Monitoring the levels of sedation-analgesia may be helpful for managing patient stress on minimally invasive medical procedures. Monitors based on EEG analysis and designed to assess general anesthesia cannot distinguish reliably between a light and deep sedation. In this work, the Poincaré plot is used as a nonlinear technique applied to EEG signals in order to characterize the levels of sedation-analgesia, according to observed categorical responses that were evaluated by means of Ramsay Sedation Scale (RSS)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269447/using-bioimpedance-spectroscopy-parameters-as-real-time-feedback-during-tdcs
#7
Isar Nejadgholi, Herschel Caytak, Miodrag Bolic
An exploratory analysis is carried out to investigate the feasibility of using BioImpedance Spectroscopy (BIS) parameters, measured on scalp, as real-time feedback during Transcranial Direct Current Stimulation (tDCS). TDCS is shown to be a potential treatment for neurological disorders. However, this technique is not considered as a reliable clinical treatment, due to the lack of a measurable indicator of treatment efficacy. Although the voltage that is applied on the head is very simple to measure during a tDCS session, changes of voltage are difficult to interpret in terms of variables that affect clinical outcome...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269260/localised-impedance-monitoring-device-for-the-remote-clinical-assessment-of-home-based-dialysis-patients
#8
A Montalibet, W Arkouche, P Bogonez Franco, S Bonnet, A Clarion, G Delhomme, C Gehin, S Gharbi, R Guillemaud, P Jallon, B Massot, P Pham, E Ribbe-Cornet, E McAdams
BioImpedance Spectroscopy (BIS) has been clinically used to determine the hydrational status of patients undergoing haemodialysis (HD). In the present project we are developing a calf-localised, integrated impedimetric device to periodically and conveniently measure and transmit information on the hydrational status of home-based patients to a remote clinic. Surprisingly, we have found that simple postural changes before or during measurement lead to significant fluid shifts in the lower leg that are as important and as long lasting as the effects of haemodialysis...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28265482/evaluating-the-effects-of-diffused-lavender-in-an-adult-day-care-center-for-patients-with-dementia-in-an-effort-to-decrease-behavioral-issues-a-pilot-study
#9
Robin Moorman Li, Brian Gilbert, Anna Orman, Petra Aldridge, Sue Leger-Krall, Clare Anderson, Juan Hincapie Castillo
Objectives: To evaluate the effects of diffused lavender on the frequency of behavioral issues [BIs], defined as a composite of restlessness/wandering [RW], agitation [AGT], anger [ANG], and anxiety [ANX] in an adult day care center. Secondary objectives evaluate systematic differences on the frequency of BIs between age cohorts, gender, and individual behaviors. Design: Pre-post quasi-experimental study. Setting: Private nonprofit adult day care center for patients with dementia. Participants: Elderly patients older than 65 years of age with a clinical diagnosis of dementia, who require daytime monitoring...
2017: Journal of drug assessment
https://www.readbyqxmd.com/read/28262312/development-and-validation-of-an-ultra-performance-liquid-chromatography-method-for-the-determination-of-bis-2-4-di-tert-butylphenyl-phosphate-and-related-extractable-compounds-from-single-use-plastic-films
#10
Christine Ta, Jonathan Bones
A UPLC-UV method is described for the detection of bDtBPP and related breakdown compounds of Irgafos 168 from single-use bioprocessing bag films using a CSH (charged surface hybrid) fluoro phenyl column and UV detection at 220nm. The method limits of detection were between 16μgL(-1) and 60μgL(-1), repeatability was %RSD≤1.8 and linearity was R(2)≥0.9992. The method was applied to an extractables and leachables test of three single-use bioprocessing bag films. bDtBPP and oxidised Irgafos were detected from all three films in the extractables study, but not in the leachables study...
February 27, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28261688/in-situ-xps-monitoring-and-characterization-of-electrochemically-prepared-au-nanoparticles-in-an-ionic-liquid
#11
Merve T Camci, Burak Ulgut, Coskun Kocabas, Sefik Suzer
Gold nanoparticles (Au NPs) have been electrochemically prepared in situ and in vacuo using two different electrochemical device configurations, containing an ionic liquid (IL), N-N-diethyl-N-methyl-N-(2-methoxyethyl)ammonium bis(trifluoromethanesulfonyl)imide, that serves both as reaction and as stabilizing media for the NPs. It was observed in both devices that Au NPs were created using an anodically triggered route. The created Au NPs are relatively small (3-7 nm) and reside within the IL medium. X-ray photoelectron spectroscopy is utilized to follow not only the formation of the NPs but also their charging/discharging properties, by monitoring the charging shifts of the Au4f peak representing the electrodes and also the Au NPs as well as the F1s peak of the IL after polarizing one of the electrodes...
February 28, 2017: ACS Omega
https://www.readbyqxmd.com/read/28246018/the-impacts-of-emission-trends-of-pops-on-human-concentration-dynamics-lessons-learned-from-a-longitudinal-study-in-norway-1979-2007
#12
Therese Haugdahl Nøst, Torkjel Manning Sandanger, Evert Nieboer, Jon Øyvind Odland, Knut Breivik
BACKGROUND: In this short communication, our focus is on the relationship between human concentrations of select persistent organic pollutants (POPs) and environmental emissions. It is based on a longitudinal study (1979-2007) conducted in Norway. OBJECTIVES: Our aim was to extract general insights from observed and predicted temporal trends in human concentrations of 49 POPs to assist in the design and interpretation of future monitoring studies. DISCUSSION: Despite considerable decline for polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) since 1986, the sum of the targeted POPs increased from 1979 until 2001, with per- and polyfluorinated alkyl substances (PFASs) dominating recent blood burden measurements...
February 20, 2017: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/28238325/elimination-of-n-o-bis-trimethylsilyl-trifluoroacetamide-interference-by-base-treatment-in-derivatization-gas-chromatography-mass-spectrometry-determination-of-parts-per-billion-of-alcohols-in-a-food-additive
#13
Koudi Zhu, Binghe Gu, Michale Kerry, Markus Mintert, Jim Luong, Matthias Pursch
A novel base treatment followed by liquid-liquid extraction was developed to remove the interference of excess derivatization reagent BSTFA [N,O-Bis(trimethylsilyl)trifluoroacetamide] and its byproducts for trace determination of 1-chloro-2-propanol and 2-chloro-1-propanol in a food additive. The corresponding trimethylsilyl derivatives were analyzed by gas chromatography mass spectrometry (GC/MS) detection in selective ion monitoring mode. Due to a large volume splitless injection needed for achieving the required sensitivity, excess BSTFA in the derivatization sample solution interfered with the trimethylsilyl derivatives of the analytes of interest, making their quantitation not attainable...
February 14, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28235530/intraoperative-aberrant-bispectral-index-values-due-to-facial-nerve-monitoring
#14
Dhritiman Chakrabarti, Rohini Mrugank Surve, Deepti Bs, Dheeraj Masapu
Bispectral index is an accepted depth of anaesthesia monitor for guiding intraoperative hypnotic agent administration. Frontalis EMG displayed on BIS monitor may increase due to twitching of frontalis muscle. EMG increases are also known to cause artefactual increases in BIS values. We report a case of artefactual increase of EMG and subsequently BIS values, due to electrical artefact from cranial nerve stimulator being used to identify the facial nerve. An explanation of the effect of stimulator signal on BIS EMG and BIS values has been provided...
February 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28227981/assessment-of-sedation-analgesia-by-means-of-poincare%C3%AC-analysis-of-the-electroencephalogram
#15
Jose D Bolanos, Montserrat Vallverdu, Pere Caminal, Daniel F Valencia, Xavi Borrat, Pedro L Gambus, Jose F Valencia, Jose D Bolanos, Montserrat Vallverdu, Pere Caminal, Daniel F Valencia, Xavi Borrat, Pedro L Gambus, Jose F Valencia, Jose D Bolanos, Xavi Borrat, Jose F Valencia, Montserrat Vallverdu, Pere Caminal, Pedro L Gambus, Daniel F Valencia
Monitoring the levels of sedation-analgesia may be helpful for managing patient stress on minimally invasive medical procedures. Monitors based on EEG analysis and designed to assess general anesthesia cannot distinguish reliably between a light and deep sedation. In this work, the Poincaré plot is used as a nonlinear technique applied to EEG signals in order to characterize the levels of sedation-analgesia, according to observed categorical responses that were evaluated by means of Ramsay Sedation Scale (RSS)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227693/using-bioimpedance-spectroscopy-parameters-as-real-time-feedback-during-tdcs
#16
Isar Nejadgholi, Herschel Caytak, Miodrag Bolic, Isar Nejadgholi, Herschel Caytak, Miodrag Bolic, Isar Nejadgholi, Miodrag Bolic, Herschel Caytak
An exploratory analysis is carried out to investigate the feasibility of using BioImpedance Spectroscopy (BIS) parameters, measured on scalp, as real-time feedback during Transcranial Direct Current Stimulation (tDCS). TDCS is shown to be a potential treatment for neurological disorders. However, this technique is not considered as a reliable clinical treatment, due to the lack of a measurable indicator of treatment efficacy. Although the voltage that is applied on the head is very simple to measure during a tDCS session, changes of voltage are difficult to interpret in terms of variables that affect clinical outcome...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227494/localised-impedance-monitoring-device-for-the-remote-clinical-assessment-of-home-based-dialysis-patients
#17
A Montalibet, W Arkouche, P Bogonez Franco, S Bonnet, A Clarion, G Delhomme, C Gehin, S Gharbi, R Guillemaud, P Jallon, B Massot, P Pham, E Ribbe-Cornet, E McAdams, A Montalibet, W Arkouche, P Bogonez Franco, S Bonnet, A Clarion, G Delhomme, C Gehin, S Gharbi, R Guillemaud, P Jallon, B Massot, P Pham, E Ribbe-Cornet, E McAdams, B Massot, P Pham, A Montalibet, P Jallon, E Ribbe-Cornet, P Bogonez Franco, G Delhomme, S Bonnet, R Guillemaud, W Arkouche, A Clarion, C Gehin, S Gharbi, E McAdams
BioImpedance Spectroscopy (BIS) has been clinically used to determine the hydrational status of patients undergoing haemodialysis (HD). In the present project we are developing a calf-localised, integrated impedimetric device to periodically and conveniently measure and transmit information on the hydrational status of home-based patients to a remote clinic. Surprisingly, we have found that simple postural changes before or during measurement lead to significant fluid shifts in the lower leg that are as important and as long lasting as the effects of haemodialysis...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28220383/removal-of-dde-by-exploiting-the-alcoho-phobic-interactions
#18
Kazım Köse, Dursun Ali Köse
DDE (1,1-bis-(4-chlorophenyl)-2,2-dichloroethene), which is a commonly used pesticides in agriculture, has harmful effects on human health. Therefore, the removal of this substance from the drinking water and the soil is essential. Since DDT (1,1″-(2,2,2-Trichloroethane-1,1-diyl) bis(4-chlorobenzene)) is derivation of DDE, the presence of DDT can be monitored by the detection of DDE present in the environment. Herein, we report on the development of aspartic acid-incorporated poly(2-hydroxyethyl methacrylate-L-aspartic acid) [poly(HEMA-MAsp)] cryogel for the removal of DDE from aqueous solutions for the first time in the literature...
February 20, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28218809/luminescent-bis-cyclometalated-gold-iii-complexes-with-alkynyl-ligands-of-hexaphenylbenzene-and-hexabenzocoronene-derivatives-and-their-supramolecular-assembly-study
#19
King-Chin Yim, Vonika Ka-Man Au, Keith Man-Chung Wong, Vivian W W Yam
A series of luminescent bis-cyclometalated gold(III) complexes with different nuclearities and various alkynyl ligands derived from hexaphenylbenzene (HPB) and hexabenzocoronene (HBC) has been synthesized. The energies of the low-energy metal-perturbed IL π-π*(R-C^N^C) absorptions of the HPB-alkynyl gold(III) complexes have been fine-tuned by attaching various substituent groups to the bis-cyclometalating ligands. Similarly, the metal-perturbed ³IL [π→π*(R-C^N^C)] emissions of the complexes are found to show energy shifts according to the electronic nature of the bis-cyclometalating ligands...
February 20, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28216891/effects-of-potassium-sulfate-k2so4-on-the-element-contents-polyphenol-content-antioxidant-and-antimicrobial-activities-of-milk-thistle-silybum-marianum
#20
Gulsum Yaldiz
BACKGROUND: Silybum marianum L. (Milk thistle) is native to the Mediterranean basin and is now widespread throughout the world. It's sprout is used as a herbal medicine for the treatment of liver disease for centuries. The seeds of milk thistle contain silymarin, an isomeric mixture of flavonolignans [silybin, silychristin, and silydianin]. Silymarin acts as a strong anti-hepatotoxic. OBJECTIVES: The objective of this study was to evaluate the influences of potassium sulfate [K2SO4] fertilizer doses on polyphenol content, some nutrient elements, antioxidant and antimicrobial activities of milk thistle at experimental fields of Ordu University in Turkey...
January 2017: Pharmacognosy Magazine
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