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https://www.readbyqxmd.com/read/28110446/fabrication-and-optical-properties-of-strain-free-self-assembled-mesoscopic-gaas-structures
#1
Saimon Filipe Covre da Silva, Thayná Mardegan, Sidnei Ramis de Araújo, Carlos Alberto Ospina Ramirez, Suwit Kiravittaya, Odilon D D Couto, Fernando Iikawa, Christoph Deneke
We use a combined process of Ga-assisted deoxidation and local droplet etching to fabricate unstrained mesoscopic GaAs/AlGaAs structures exhibiting a high shape anisotropy with a length up to 1.2 μm and a width of 150 nm. We demonstrate good controllability over size and morphology of the mesoscopic structures by tuning the growth parameters. Our growth method yields structures, which are coupled to a surrounding quantum well and present unique optical emission features. Microscopic and optical analysis of single structures allows us to demonstrate that single structure emission originates from two different confinement regions, which are spectrally separated and show sharp excitonic lines...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28109758/the-use-of-electronic-sensor-device-to-augment-ligament-balancing-leads-to-a-lower-rate-of-arthrofibrosis-after-total-knee-arthroplasty
#2
Jeffrey A Geller, Akshay Lakra, Taylor Murtaugh
BACKGROUND: Total knee arthroplasty (TKA) is a highly successful surgery shown to improve quality of life. One of the more common known complications of TKA is early arthrofibrosis requiring manipulation under anesthesia (MUA). This investigation evaluates the incidence of arthrofibrosis before and after the implementation of an electronic sensor device used to assist with ligament balancing. METHODS: Six hundred ninety TKAs performed without sensor use were compared to a cohort of 252 TKAs performed with sensor usage...
December 24, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28109456/late-onset-right-heart-failure-after-left-ventricular-assist-device-implant-quo-vadis
#3
EDITORIAL
David A Baran, Mandeep R Mehra
No abstract text is available yet for this article.
January 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28109455/impact-of-aortic-valve-closure-on-adverse-events-and-outcomes-with-the-heartware-ventricular-assist-device
#4
EDITORIAL
Steve K Singh
No abstract text is available yet for this article.
January 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28109453/hemodynamic-effects-of-a-fully-magnetically-levitated-centrifugal-flow-left-ventricular-assist-device
#5
EDITORIAL
Jerry D Estep, Hector O Ventura
No abstract text is available yet for this article.
January 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28109452/erratum-to-adverse-events-in-children-implanted-with-ventricular-assist-devices-in-the-us-data-from-the-pediatric-interagency-registry-for-mechanical-circulatory-support-pedimacs
#6
David N Rosenthal
No abstract text is available yet for this article.
January 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28109384/failing-systemic-right-ventricles-with-persistent-pulmonary-hypertension-candidates-for-ventricular-assist-devices-as-destination-therapy
#7
Ophelie Loup, Kerstin Wustmann, Michele Vittorio Martinelli, Markus Schwerzmann, Paul Mohacsi, Thierry Pierre Carrel, Alexander Kadner
Dysfunction of the systemic right ventricle is common after the atrial switch procedure for transposition of the great arteries. Cardiac transplantation remains the only long-term solution in terminal systemic right ventricular (RV) failure, but concomitant pulmonary hypertension (PHT) may preclude it. The increasing number of such patients, together with the concerns related to combined heart-lung transplantation (HLTx), urge us to consider other therapeutic options.
February 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28108686/use-of-mechanical-insufflation-exsufflation-devices-for-airway-clearance-in-subjects-with-neuromuscular-disease
#8
REVIEW
Catherine Auger, Vanessa Hernando, Hubert Galmiche
The aim of this systematic review is to examine the benefit/risk ratio of the use of mechanical insufflation-exsufflation (MI-E) devices for airway clearance in patients with neuromuscular diseases. A search was conducted for relevant studies in MEDLINE, the Cochrane Library, and the Health Technology Assessment Database using the main key words: cough, airway clearance, in-exsufflation. The search limits were studies published in English and French between 1970 and 2014 (literature watch until December 2015)...
February 2017: Respiratory Care
https://www.readbyqxmd.com/read/28108500/ophthalmic-artery-occlusion-after-pipeline-embolization-device-placement-with-reconstitution-of-flow-via-an-endoleak-a-report-of-two-cases
#9
Michael L Adix, Ian A Kaminsky, In Sup Choi
The Pipeline Embolization Device (PED) is a flow diverting stent used in the treatment of a wide variety of intracranial aneurysms. The device differs from traditional stents used in stent-assisted coil embolization in that it has a tighter lattice structure with smaller cell sizes designed specifically to disrupt blood flow into aneurysms rather than only to retain coils within aneurysms. While the PED has been shown to be safe and effective, it has a unique risk profile that includes side branch and perforator vessel occlusion...
January 20, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28107271/perioperative-care-of-the-patient-with-the-total-artificial-heart
#10
Jill Yaung, Francisco A Arabia, Michael Nurok
Advanced heart failure continues to be a leading cause of morbidity and mortality despite improvements in pharmacologic therapy. High demand for cardiac transplantation and shortage of donor organs have led to an increase in the utilization of mechanical circulatory support devices. The total artificial heart is an effective biventricular assist device that may be used as a bridge to transplant and that is being studied for destination therapy. This review discusses the history, indications, and perioperative management of the total artificial heart with emphasis on the postoperative concerns...
January 19, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28106960/a-novel-technique-to-exclude-the-left-ventricle-with-an-assist-device
#11
Stefan Klotz, Roza MeyerSaraei, Alex Frydrychowicz, Michael Scharfschwerdt, Andreas Koertge, Leon Putman, Hans Sievers
Left ventricular assist device implantation disrupts the natural intracavitary blood flow path through the heart, introducing flow patterns potentially associated with thrombosis, especially around the inflow cannula. We describe a novel technique for completely excluding the left ventricle with an assist device by using a cone shaped ring-reinforced prosthesis.
December 9, 2016: Multimedia Manual of Cardiothoracic Surgery: MMCTS
https://www.readbyqxmd.com/read/28106959/implanting-permanent-left-ventricular-assist-devices-in-patients-on-veno-arterial-extracorporeal-membrane-oxygenation-support
#12
Diyar Saeed, Alexander Assmann, Muhammad Abdeen, Alexander Albert, Bujar Maxhera, Najla Sadat, Stephan Sixt, Artur Lichtenberg
Selected patients who fail to be weaned off temporary veno-arterial extracorporeal membrane oxygenation (VA-ECMO) support may be considered for long-term left ventricular assist devices (LVADs).  We describe here an LVAD implantation technique in patients with prior VA-ECMO support without the use of a cardiopulmonary bypass machine, which minimizes the intraoperative trauma and blood loss while still meeting all the goals of the standard procedure.
December 9, 2016: Multimedia Manual of Cardiothoracic Surgery: MMCTS
https://www.readbyqxmd.com/read/28106747/design-of-wearable-breathing-sound-monitoring-system-for-real-time-wheeze-detection
#13
Shih-Hong Li, Bor-Shing Lin, Chen-Han Tsai, Cheng-Ta Yang, Bor-Shyh Lin
In the clinic, the wheezing sound is usually considered as an indicator symptom to reflect the degree of airway obstruction. The auscultation approach is the most common way to diagnose wheezing sounds, but it subjectively depends on the experience of the physician. Several previous studies attempted to extract the features of breathing sounds to detect wheezing sounds automatically. However, there is still a lack of suitable monitoring systems for real-time wheeze detection in daily life. In this study, a wearable and wireless breathing sound monitoring system for real-time wheeze detection was proposed...
January 17, 2017: Sensors
https://www.readbyqxmd.com/read/28106574/walking-ability-of-spinal-cord-injury-individuals-how-to-improve-it
#14
Morteza Sadeghi, Gholam Hussein Ghasemi, Mohammad Taghi Karimi
BACKGROUND: Subjects with Spinal Cord Injury (SCI) should use various assistive devices to stand and walk. Unfortunately they suffer from slow walking speed, high energy consumption, and too much force applied on upper limb while walking. The aim of this study was to determine the gap between the gait performance of SCI and normal subjects to conclude how the performance of SCI can be improved. METHOD: Three groups of SCI walked with orthosis, SCI walked without orthosis, and normal subjects were recruited in this study...
January 13, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28105542/hospice-in-heart-failure-why-when-and-what-then
#15
Jeffrey L Spiess
Hospice is a model of care for patients nearing the end of their lives that emphasizes symptom management, quality of life (QOL), and support of the patient and caregiving family through the death of the patient and the family's bereavement. It is associated with high patient and caregiver satisfaction and appears to not shorten lifespan for appropriately referred patients. Patients with advanced heart failure are being referred to hospice care more often than in the past, but the majority of deaths occur without this benefit...
January 20, 2017: Heart Failure Reviews
https://www.readbyqxmd.com/read/28104118/cerebrovascular-accident-rate-is-different-between-centrifugal-and-axial-flow-pumps-but-survival-and-driveline-infection-rates-are-similar
#16
M Kimura, K Nawata, O Kinoshita, H Yamauchi, Y Itoda, T Imamura, M Hatano, K Kinugawa, M Ono
OBJECTIVES: We analyzed the outcome of patients with implantable left ventricular assist devices (LVADs) at the University of Tokyo Hospital to compare those with centrifugal pumps (CE group: Duraheart and Evaheart) and those with axial-flow pumps (AX group: Heartmate II and Jarvik 2000). METHODS: A total of 68 patients who underwent implantation of LVADs (Duraheart: n = 15; Evaheart: n = 23; Heartmate II: n = 22; Jarvik 2000: n = 8) as a bridge to transplantation at our institution from May 2011 to April 2015 were retrospectively reviewed...
January 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28103907/the-association-between-fear-of-falling-and-smoothness-of-lower-trunk-oscillation-in-gait-varies-according-to-gait-speed-in-community-dwelling-older-adults
#17
Tsuyoshi Asai, Shogo Misu, Ryuichi Sawa, Takehiko Doi, Minoru Yamada
BACKGROUND: Fear of falling (FoF) is common in community-dwelling older adults. FoF and increased walking speed are associated with lower trunk oscillation during gait in older adults. We hypothesized that older adults with FoF would struggle to walk safely when instructed to walk faster than usual. METHODS: Participants included 260 community-dwelling older adults aged over 65 years (mean age = 71.9 ± 3.9 years) who were able to walk independently without an assistive device...
January 19, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28103760/the-use-of-a-direct-manufacturing-prosthetic-socket-system-in-a-rural-community-in-south-africa-a-pilot-study-and-lessons-for-future-research
#18
Liezel Ennion, Anton Johannesson, Anthea Rhoda
BACKGROUND: Challenges exist with the provision of appropriate mobility assistive devices in rural areas. The use of the direct manufacturing prosthetic socket system is a possible solution to these challenges. OBJECTIVES: The objective of this study was to test and explore the clients' perspectives with the application of this device. STUDY DESIGN: Within a mixed-methods approach, a longitudinal sequential explanatory design was applied. METHODS: The Orthotic and Prosthetic User's Survey was administered to explore the use of the direct manufacturing prosthetic socket system in terms of function, health-related quality of life and client satisfaction...
January 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28103510/exo-organoplasty-interventions-a-brief-review-of-past-present-and-future-directions-for-advance-heart-failure-management
#19
REVIEW
Waqas Nawaz, Farhan Ullah Khan, Muhammad Zahid Khan, Wang Gang, Mengqi Yang, Xiaoqian Liao, Li Zhang, Awais Ullah Ihsan, Amjad Khan, Lei Han, Xiaohui Zhou
Heart failure (HF) is a debilitating disease in which abnormal function of the heart leads to imbalance of blood demand to tissues and organs. The pathogenesis of HF is very complex and various factors can contribute including myocardial infarction, ischemia, hypertension and genetic cardiomyopathies. HF is the leading cause of death and its prevalence is expected to increase in parallel with the population age. Different kind of therapeutic approaches including lifestyle modification, medication and pacemakers are used for HF patients in NYHA I-III functional class...
January 16, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28103049/controlling-kink-geometry-in-nanowires-fabricated-by-alternating-metal-assisted-chemical-etching
#20
Yun Chen, Liyi Li, Cheng Zhang, Chia-Chi Tuan, Xin Chen, Jian Gao, Ching-Ping Wong
Kinked silicon (Si) nanowires (NWs) have many special properties that make them attractive for a number of applications, such as microfluidics devices, microelectronic devices, and biosensors. However, fabricating NWs with controlled 3D geometry has been challenging. In this work, a novel method called alternating metal-assisted chemical etching, or alternating MACE, is reported for the fabrication of kinked Si NWs with controlled 3D geometry. By the use of multiple etchants with carefully selected composition, one can control the number of kinks, their locations, and their angles by controlling the number of etchant alternations and the time in each etchant...
January 19, 2017: Nano Letters
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