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https://www.readbyqxmd.com/read/28644683/use-of-percutaneous-left-ventricular-assist-device-impella-in-vasodilatory-poison-induced-shock
#1
JoAn R Laes, Chad Olinger, Jon B Cole
No abstract text is available yet for this article.
June 23, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28643961/bioelectroventing-an-electrochemical-assisted-bioremediation-strategy-for-cleaning-up-atrazine-polluted-soils
#2
Ainara Domínguez-Garay, Jose Rodrigo Quejigo, Ulrike Dörfler, Reiner Schroll, Abraham Esteve-Núñez
The absence of suitable terminal electron acceptors (TEA) in soil might limit the oxidative metabolism of environmental microbial populations. Bioelectroventing is a bioelectrochemical strategy that aims to enhance the biodegradation of a pollutant in the environment by overcoming the electron acceptor limitation and maximizing metabolic oxidation. Microbial electroremediating cells (MERCs) are devices that can perform such a bioelectroventing. We also report an overall profile of the (14) C-ATR metabolites and (14) C mass balance in response to the different treatments...
June 23, 2017: Microbial Biotechnology
https://www.readbyqxmd.com/read/28643335/a-review-of-hemolysis-prediction-models-for-computational-fluid-dynamics
#3
REVIEW
Hai Yu, Sebastian Engel, Gábor Janiga, Dominique Thévenin
Flow-induced hemolysis is a crucial issue for many biomedical applications; in particular, it is an essential issue for the development of blood-transporting devices such as left ventricular assist devices, and other types of blood pumps. In order to estimate red blood cell (RBC) damage in blood flows, many models have been proposed in the past. Most models have been validated by their respective authors. However, the accuracy and the validity range of these models remains unclear. In this work, the most established hemolysis models compatible with computational fluid dynamics of full-scale devices are described and assessed by comparing two selected reference experiments: a simple rheometric flow and a more complex hemodialytic flow through a needle...
June 23, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28643306/-laparoscopy-and-endoscopy-cooperative-surgery-for-colorectal-tumors
#4
Pinghong Zhou, Yunshi Zhong, Tao Chen
Laparoscopy and endoscopy cooperative surgery (LECS) for colorectal tumors is not only a minimally invasive treatment, but also a safer therapy. It mainly includes laparoscopy-assisted colonoscopic resection and colonoscopy-assisted laparoscopic surgery. Laparoscopy-assisted colonoscopic procedure can make endoscopic resection more "aggressive". Performers can directly observe to ensure normal intestinal wall, and the intestinal defect can be directly repaired. If suspected malignant tumor can not be removed by colonoscopy, the laparoscopic surgery can be performed...
June 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28643185/keeping-disability-in-mind-a-case-study-in-implantable-brain-computer-interface-research
#5
Laura Specker Sullivan, Eran Klein, Tim Brown, Matthew Sample, Michelle Pham, Paul Tubig, Raney Folland, Anjali Truitt, Sara Goering
Brain-Computer Interface (BCI) research is an interdisciplinary area of study within Neural Engineering. Recent interest in end-user perspectives has led to an intersection with user-centered design (UCD). The goal of user-centered design is to reduce the translational gap between researchers and potential end users. However, while qualitative studies have been conducted with end users of BCI technology, little is known about individual BCI researchers' experience with and attitudes towards UCD. Given the scientific, financial, and ethical imperatives of UCD, we sought to gain a better understanding of practical and principled considerations for researchers who engage with end users...
June 22, 2017: Science and Engineering Ethics
https://www.readbyqxmd.com/read/28642622/self-assembled-cubic-boron-nitride-nanodots
#6
Alireza Khanaki, Zhongguang Xu, Hao Tian, Renjing Zheng, Zheng Zuo, Jian-Guo Zheng, Jianlin Liu
One of the low-dimensional Boron Nitride (BN) forms, namely, cubic-BN (c-BN) nanodots (NDs), offers a variety of novel opportunities in battery, biology, deep ultraviolet light emitting diodes, sensors, filters, and other optoelectronic applications. To date, the attempts towards producing c-BN NDs were mainly performed under extreme high-temperature/high-pressure conditions and resulted in c-BN NDs with micrometer sizes, mixture of different BN phases, and containing process-related impurities/contaminants...
June 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28642437/human-in-the-loop-optimization-of-exoskeleton-assistance-during-walking
#7
Juanjuan Zhang, Pieter Fiers, Kirby A Witte, Rachel W Jackson, Katherine L Poggensee, Christopher G Atkeson, Steven H Collins
Exoskeletons and active prostheses promise to enhance human mobility, but few have succeeded. Optimizing device characteristics on the basis of measured human performance could lead to improved designs. We have developed a method for identifying the exoskeleton assistance that minimizes human energy cost during walking. Optimized torque patterns from an exoskeleton worn on one ankle reduced metabolic energy consumption by 24.2 ± 7.4% compared to no torque. The approach was effective with exoskeletons worn on one or both ankles, during a variety of walking conditions, during running, and when optimizing muscle activity...
June 23, 2017: Science
https://www.readbyqxmd.com/read/28639653/an-efficient-enzyme-powered-micromotor-device-fabricated-by-cyclic-alternate-hybridization-assembly-for-dna-detection
#8
Shizhe Fu, Xueqing Zhang, Yuzhe Xie, Jie Wu, Huangxian Ju
An efficient enzyme-powered micromotor device was fabricated by assembling multiple layers of catalase on the inner surface of a poly(3,4-ethylenedioxythiophene and sodium 4-styrenesulfonate)/Au microtube (PEDOT-PSS/Au). The catalase assembly was achieved by programmed DNA hybridization, which was performed by immobilizing a designed sandwich DNA structure as the sensing unit on the PEDOT-PSS/Au, and then alternately hybridizing with two assisting DNA to bind the enzyme for efficient motor motion. The micromotor device showed unique features of good reproducibility, stability and motion performance...
June 22, 2017: Nanoscale
https://www.readbyqxmd.com/read/28637740/tablet-computers-versus-optical-aids-to-support-education-and-learning-in-children-and-young-people-with-low-vision-protocol-for-a-pilot-randomised-controlled-trial-create-children-reading-with-electronic-assistance-to-educate
#9
Michael D Crossland, Rachel Thomas, Hilary Unwin, Seelam Bharani, Vijaya K Gothwal, Ana Quartilho, Catey Bunce, Annegret Dahlmann-Noor
INTRODUCTION: Low vision and blindness adversely affect education and independence of children and young people. New 'assistive' technologies such as tablet computers can display text in enlarged font, read text out to the user, allow speech input and conversion into typed text, offer document and spreadsheet processing and give access to wide sources of information such as the internet. Research on these devices in low vision has been limited to case series. METHODS AND ANALYSIS: We will carry out a pilot randomised controlled trial (RCT) to assess the feasibility of a full RCT of assistive technologies for children/young people with low vision...
June 21, 2017: BMJ Open
https://www.readbyqxmd.com/read/28637130/community-integration-and-life-satisfaction-among-individuals-with-spinal-cord-injury-living-in-the-community-after-receiving-institutional-care-in-bangladesh
#10
Nayeema Ahmed, Mohammad Morshedul Quadir, Mohammad Akhlasur Rahman, Hasanat Alamgir
PURPOSE: This study reports level of community integration and life satisfaction among individuals who sustained traumatic spinal cord injuries, received institutional rehabilitation care services, and went back to live in the community in Bangladesh. It examines the impact of type of injury, demographic characteristics, socio-economic profile, and secondary health conditions on community integration and life satisfaction and explores the association between these two measures. METHOD: Individuals with spinal cord injury were telephone interviewed by the Centre for the Rehabilitation of the Paralysed, Bangladesh from February to June of 2014...
February 7, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28636028/supramolecular-functional-assemblies-dynamic-membrane-transporters-and-peptide-nanotubular-composites
#11
Alberto Fuertes, Marisa Juanes, Juan R Granja, Javier Montenegro
The fabrication of functional molecular devices constitutes one of the most important current challenges for chemical sciences. The complex processes accomplished by living systems continuously demand the assistance of non-covalent interactions between molecular building blocks. Additionally, these building blocks (proteins, membranes, nucleotides) are also constituted by self-assembled structures. Therefore, supramolecular chemistry is the discipline required to understand the properties of the minimal self-assembled building blocks of living systems and to develop new functional smart materials...
June 21, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28635506/an-individualised-acoustically-transparent-earpiece-for-hearing-devices
#12
Florian Denk, Marko Hiipakka, Birger Kollmeier, Stephan M A Ernst
OBJECTIVE: An important and often still unresolved problem of hearing devices such as assistive listening devices and hearing aids is limited user acceptance - a primary reason is poor conservation quality of the acoustic environment. Approaching a possible solution to this problem, an earpiece prototype is presented and evaluated. The prototype is individually and automatically calibrated in situ to provide acoustical transparency, i.e., achieving an audio perception alike to the open ear...
March 1, 2017: International Journal of Audiology
https://www.readbyqxmd.com/read/28634341/terahertz-circular-airy-vortex-beams
#13
Changming Liu, Jinsong Liu, Liting Niu, Xuli Wei, Kejia Wang, Zhengang Yang
Vortex beams have received considerable research interests both in optical and millimeter-wave domain since its potential to be utilized in the wireless communications and novel imaging systems. Many well-known optical beams have been demonstrated to carry orbital angular momentum (OAM), such as Laguerre-Gaussian beams and high-order Bessel beams. Recently, the radially symmetric Airy beams that exhibit an abruptly autofocusing feature are also demonstrated to be capable of carrying OAM in the optical domain...
June 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28634001/the-effect-of-preoperative-cognitive-behavior-and-exercise-therapy-for-patient-with-implanted-lvad-in-korea-case-presentation
#14
Yong Gon Seo, Won Hah Park, Eun Seok Jeon, Ji Dong Sung, Mi Ja Jang
Left ventricular assist devices (LVADs) are used in patients with progressive heart failure symptoms to provide circulatory support. Patients with LVADs are referred to inpatient cardiac rehabilitation to prevent postoperative complications and improve aerobic capacity and quality of life (QOL). Preoperative exercise therapy for cardiac patients is an emerging treatment modality, and several studies have reported that it improves postoperative outcomes such as length of hospital stay and postoperative complications...
June 17, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28633885/characteristics-of-paraspinal-muscle-spindle-response-to-mechanically-assisted-spinal-manipulation-a-preliminary-report
#15
William R Reed, Joel G Pickar, Randall S Sozio, Michael A K Liebschner, Joshua W Little, Maruti R Gudavalli
OBJECTIVES: The purpose of this preliminary study is to determine muscle spindle response characteristics related to the use of 2 solenoid powered clinical mechanically assisted manipulation (MAM) devices. METHODS: L6 muscle spindle afferents with receptive fields in paraspinal muscles were isolated in 6 cats. Neural recordings were made during L7 MAM thrusts using the Activator V (Activator Methods Int. Ltd., Phoenix, AZ) and/or Pulstar (Sense Technology Inc., Pittsburgh, PA) devices at their 3 lowest force settings...
June 17, 2017: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/28633256/successful-delivery-in-a-patient%C3%A2-with-left-ventricular-assist-device-and-unplanned-pregnancy
#16
George Makdisi, M Y Jan, Lauren Dungy-Poythress, I-Wen Wang, Marco A Caccamo
We report the case of a woman supported by a left ventricular assist device (LVAD) who presented at 20 weeks of gestation and decided against recommendations to continue with her pregnancy. This was managed with well-developed plan for a multidisciplinary team approach. With close and regular follow-up and regular adjustment of the patient's medications and LVAD parameters, successful delivery and outcome for both the mother and the newborn were achieved.
July 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28632696/infection-of-ventricular-assist-device-detected-and-monitored-by-18f-fdg-pet-ct
#17
Sébastien Dejust, Renaud Guedec-Ghelfi, Estelle Blanc-Autrant, Yannick Lepers, David Morland
We report a case of a 59-year-old man who presented with fever, sepsis, and left cervicothoracic cutaneous inflammation 13 months after implantation of Jarvik 2000 device. Device infection was suspected and F-FDG PET/CT showed an intense and homogeneous uptake along driveline cable. Bacteriological local sample showed Staphylococcus aureus. After adapted antibiotherapy, control F-FDG PET/CT displays treatment efficacy with no residual uptake in driveline. F-FDG PET/CT could be an important tool for early noninvasive detection of left ventricular assist device infection and monitoring antibiotherapy response...
June 19, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28631506/the-influence-of-standards-and-clinical-guidelines-on-prosthetic-and-orthotic-service-quality-a-scoping-review
#18
Ebrahim Sadeghi-Demneh, Saeed Forghany, Pornsuree Onmanee, Ursula Trinler, Michael P Dillon, Richard Baker
OBJECTIVES: Standards and guidelines are an integral part of prosthetic and orthotic service delivery in the developed world underpinned by an assumption that they lead to improved services. Implementing them has a cost, however, and that cost needs to be justified, particularly in resource-limited environments. This scoping review thus asks the question, "What is the evidence of the impact of standards and guidelines on service delivery outcomes in prosthetics and orthotics?" MATERIALS AND METHODS: A structured search of three electronic databases (Medline, Scopus and Web of Science) followed by manual searching of title, abstract and full text, yielded 29 articles...
June 20, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28631467/quantum-dots-facilitated-printing-of-zno-nanostructure-photodetectors-with-improved-performance
#19
Brent Cook, Qingfeng Liu, Maogang Gong, Dan Ewing, Matthew Casper, Alex Stramel, Judy Z Wu
A nanocomposite ink composed of zinc oxide precursor (ZnOPr) and crystalline ZnO quantum dots (ZnOPrQDs) has been explored for printing high-performance ultraviolet (UV) photodetectors. The performance of the devices has been compared with their counterparts' printed from ZnOPr ink without ZnO QDs. Remarkably, higher UV photoresponsivity of 383.6 A/W and the on/off ratio of 2470 are observed in the former, which are significantly better than 14.7 A/W and 949 in the latter. The improved performance is attributed to the increased viscosity in the nanocomposite ink to enable a nanoporous structure with improved crystallinity and surface-to-volume ratio...
June 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28631345/advantages-and-disadvantages-of-using-intravenous-tissue-plasminogen-activator-as-salvage-therapy-for-inoperable-heartware-thrombosis
#20
Robyn Basken, Charles M Bazzell, Richard Smith, Rajesh Janardhanan, Zain Khalpey
Device thrombosis is a devastating complication of left ventricular assist devices. The definitive treatment has been device exchange or explant. Evidence of increasing morbidity and mortality with device exchange has shifted strategies toward conservative management. In this report, we detail the use of thrombolytics as salvage therapy in a patient with an occlusive HeartWare ventricular assist device (HeartWare Inc., Framingham, MA) thrombus, resulting in long-term survival without further intervention.
June 19, 2017: Journal of Cardiac Surgery
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