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https://www.readbyqxmd.com/read/29786431/ultrasonic-assisted-spin-coating-improved-junction-by-enhanced-permeation-of-coating-material-within-nanostructures
#1
Jong-Won Yun, Farman Ullah, Se-Jeong Jang, Do Hui Kim, Tri Khoa Nguyen, Ki Yeon Ryu, Shinuk Cho, Joon I Jang, Dooyong Lee, Sungkyun Park, Yong Soo Kim
Over the last decades, the spin coating (SC) technique has been widely used to prepare thin films of various materials in liquid phase on arbitrary substrates. The technique simply relies on centrifugal force to spread a coating solution radially outwards over the substrate. This mechanism works fairly well for solutions with low surface tension to form thin films of reasonable junctions on smooth substrates. Here, we present a modified SC technique, namely ultrasonic-assisted spin-coating (UASC), to form thin films of coating solution having high surface tension on rough substrates with excellent junctions...
May 22, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29785544/heartmate-ii-implantation-technique-that-spares-the-sternum-and-ascending-aorta
#2
Masashi Kawabori, Chitaru Kurihara, Tadahisa Sugiura, Andrew B Civitello, Jeffrey A Morgan
Left ventricular assist devices (LVADs) have become the standard therapy for patients with end-stage heart failure, and the use of LVADs for long-term support has grown exponentially over the past decade. As the number of LVAD implantations has increased, surgeons have faced more challenging cases, such as those in which the patient has previously undergone a sternotomy. The HeartMate II is one of the most widely implanted LVADs. The standard procedure for HeartMate II implantation is median sternotomy and sewing the outflow graft to the ascending aorta...
May 21, 2018: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://www.readbyqxmd.com/read/29785470/four-factor-prothrombin-complex-concentrate-for-warfarin-reversal-in-patients-with-left-ventricular-assist-devices
#3
Jessica Rimsans, Amy Levesque, Erin Lyons, Katelyn Sylvester, Michael M Givertz, Mandeep R Mehra, Garrick C Stewart, Jean M Connors
Continuous flow left ventricular assist devices (CF-LVAD) require therapeutic anticoagulation which is often interrupted for procedures or bleeding. Prior to the availability of four factor prothrombin complex concentrate (4F-PCC) in the United States, warfarin was held and its effects reversed by vitamin K or fresh frozen plasma. We evaluated the use of 4F-PCC for temporary warfarin reversal in patients with CF-LVADs and assessed outcomes. This analysis is a retrospective study of CF-LVAD patients who received 4F-PCC for warfarin reversal in the setting of bleeding or need for urgent or elective procedures...
May 21, 2018: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/29784052/the-effect-of-heart-failure-and-left-ventricular-assist-device-treatment-on-right-ventricular-mechanics-a-computational-study
#4
Jun I K Park, Aulia Khamas Heikhmakhtiar, Chang Hyun Kim, Yoo Seok Kim, Seong Wook Choi, Kwang Soup Song, Ki Moo Lim
BACKGROUND AND AIMS: Although it is important to analyze the hemodynamic factors related to the right ventricle (RV) after left ventricular assist device (LVAD) implantation, previous studies have focused only on the alteration of the ventricular shape and lack quantitative analysis of the various hemodynamic parameters. Therefore, we quantitatively analyzed various hemodynamic parameters related to the RV under normal, heart failure (HF), and HF incorporated with continuous flow LVAD therapy by using a computational model...
May 22, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29783995/bowel-obstruction-due-to-retained-intraperitoneal-left-ventricular-assist-device-lvad-driveline
#5
Daniel Miklin, Ivy Lewis, Howard Lieberman
BACKGROUND: Left ventricular assist devices (LVAD) provide a lifesaving bridge to cardiac transplant. Utilization of these devices is increasing in the United States. When a patient undergoes cardiac transplant, the left ventricular device is surgically removed and the driveline is extracted or left tunneled in the subcutaneous tissue. Our group encountered a rare and previously unreported complication of this device: intraperitoneal infiltration of a retained driveline after cardiac transplant causing a small bowel obstruction...
May 21, 2018: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/29783914/early-application-of-an-intermittent-pneumatic-compression-device-is-safe-and-results-in-proximal-arteriovenous-fistula-enlargement
#6
Sanjay Desai, Amit Mitra, Ed Arkans, Tej M Singh
INTRODUCTION: Delays in arteriovenous fistula maturation can cause care delays and increased costs. Increased distention pressure and intermittent wall shear stress may dilate veins based on prior research. Early use of non-invasive devices may help assist clinical arteriovenous fistula dilation. METHODS: This was an Institutional Review Board approved study. After arteriovenous fistula creation, a novel, intermittent pneumatic compression device (Fist Assist® ) was applied 15 cm proximal to arteriovenous fistula enabling 60 mmHg of cyclic compression for 6 h daily for 30 days...
May 1, 2018: Journal of Vascular Access
https://www.readbyqxmd.com/read/29783738/etracker-a-mobile-gaze-tracking-system-with-near-eye-display-based-on-a-combined-gaze-tracking-algorithm
#7
Bin Li, Hong Fu, Desheng Wen, WaiLun Lo
Eye tracking technology has become increasingly important for psychological analysis, medical diagnosis, driver assistance systems, and many other applications. Various gaze-tracking models have been established by previous researchers. However, there is currently no near-eye display system with accurate gaze-tracking performance and a convenient user experience. In this paper, we constructed a complete prototype of the mobile gaze-tracking system ' Etracker ' with a near-eye viewing device for human gaze tracking...
May 19, 2018: Sensors
https://www.readbyqxmd.com/read/29781854/salvage-of-threatened-cardiovascular-implantable-electronic-devices-case-series-and-review-of-literature
#8
Andrew M Simpson, W Tyler Rockwell, Roger A Freedman, W Bradford Rockwell
BACKGROUND: The treatment of infected or exposed cardiac pacing and defibrillator devices is controversial. The conservative and widely accepted management calls for removal of the device and leads with immediate or delayed replacement of new components in a new site. Lead extraction carries a 2% major complication risk. In this article, we describe our experience with device salvage techniques and review the current literature. METHODS: This is a retrospective case series of consecutive patients with infected, exposed, or at-risk implanted cardiac devices that were treated with aggressive surgical debridement, local pocket irrigation, and revision...
May 17, 2018: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29781370/re-treatment-of-an-unruptured-anterior-communicating-artery-aneurysm-using-the-new-pconus-2-device-description-of-a-case
#9
Marco Varrassi, Sergio Carducci, Aldo V Giordano, Carlo Masciocchi
Endovascular approach represents today the first option in treatment of ruptured and unruptured cerebral aneurysms. Nevertheless, wide-neck bifurcation aneurysms still represent a technical challenge for endovascular treatment due to the need to protect vessels arising next to the aneurysmal neck. A variety of devices have been implemented to ensure adequate assistance for coiling of these lesions. Among these devices, the new pCONus 2 represents an evolution of the well-known pCONus; compared to the previous one in fact, it allows a degree of articulation and flexibility between the shaft and the distal part (crown), making it more suitable for treatment of aneurysms presenting an angle between the longitudinal axis of the dome and parent vessel...
January 1, 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29781049/effects-of-vitamin-k-epoxide-reductase-complex-1-gene-polymorphisms-on-warfarin-control-in-japanese-patients-with-left-ventricular-assist-devices-lvad
#10
Kazuki Nakagita, Kyoichi Wada, Yutaro Mukai, Takaya Uno, Ryoji Nishino, Sachi Matsuda, Hiromi Takenaka, Nobue Terakawa, Akira Oita, Mitsutaka Takada
PURPOSE: This study aimed to investigate relationships between times in therapeutic range (TTR) or warfarin sensitivity indexes (WSI) and VKORC1-1639G>A and CYP2C9 polymorphisms in patients with left ventricular assist devices (LVAD). METHODS: Severe heart failure patients who received LVAD from January 1, 2013 to October 31, 2017 were recruited. Relationships between TTR or WSI and VKORC1-1639G>A and CYP2C9 gene polymorphisms were investigated immediately after LVAD implantation (period 1) and immediately prior to hospital discharge (period 2)...
May 21, 2018: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29780712/advantages-of-wound-retractor-device-versus-rigid-trocar-at-camera-port-in-video-assisted-thoracic-surgery-a-single-institution-experience
#11
Federico Raveglia, Ugo Cioffi, Matilde De Simone, Alessandro Rizzi, Andrea Leporati, Carmine Tinelli, Marco Chiarelli, Alessandro Baisi
Background: rigid trocars are widely adopted in video-assisted thoracic surgery (VATS), despite some disadvantages: (I) cannula strong pressure on intercostal nerve stimulating postoperative pain; (II) limited movement of thoracoscopic devices on their fulcrum when extreme acute angles with the chest wall are needed. Wound retractor (WR) device, designed for laparoscopic surgery, it is also used in VATS, but to protect mini-thoracotomy. We compared the use of extra-small WR versus rigid trocar at camera port that is the most painful thoracostomy...
2018: Journal of Visualized Surgery
https://www.readbyqxmd.com/read/29780317/one-channel-surface-electromyography-decomposition-for-muscle-force-estimation
#12
Wentao Sun, Jinying Zhu, Yinlai Jiang, Hiroshi Yokoi, Qiang Huang
Estimating muscle force by surface electromyography (sEMG) is a non-invasive and flexible way to diagnose biomechanical diseases and control assistive devices such as prosthetic hands. To estimate muscle force using sEMG, a supervised method is commonly adopted. This requires simultaneous recording of sEMG signals and muscle force measured by additional devices to tune the variables involved. However, recording the muscle force of the lost limb of an amputee is challenging, and the supervised method has limitations in this regard...
2018: Frontiers in Neurorobotics
https://www.readbyqxmd.com/read/29780073/early-lvad-implantation-in-a-patient-with-left-ventricular-failure-after-aortic-dissection-with-left-main-stem-involvement
#13
Hazem El Beyrouti, Angela Kornberger, Nancy Halloum, Andres Beiras-Fernandez, Christian-Friedrich Vahl
BACKGROUND: Coronary involvement in aortic dissection heralds a poor outcome. Involvement of the left main stem may lead to left ventricular (LV) failure requiring mechanical circulatory support. CASE REPORT: A staged approach was applied in a 24-year-old female who suffered extensive infarction due to aortic dissection with left main stem involvement. After replacement of the ascending aorta and grafting of the left internal thoracic artery to the left anterior descending artery following a failed attempt at reconstruction of the left coronary ostium, she failed to wean from cardiopulmonary bypass (CPB) and underwent implantation of an extracorporeal life support (ECLS) system as a bridge to decision...
May 21, 2018: Annals of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29780066/impella-5-0-as-a-bridge-to-implantable-left-ventricular-assist-device-first-clinical-case-in-japan
#14
Shohei Yoshida, Koichi Toda, Shigeru Miyagawa, Yasushi Yoshikawa, Hiroki Hata, Kei Torikai, Kazuo Shimamura, Shunsuke Saito, Keiwa Kin, Koichi Maeda, Keitaro Domae, Yoshiki Watanabe, Ryohei Matsuura, Kenta Masada, Shungo Hikoso, Isamu Mizote, Fusako Sera, Kei Nakamoto, Taito Masawa, Yasushi Sakata, Toru Kuratani, Yoshiki Sawa
No abstract text is available yet for this article.
May 18, 2018: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/29779063/development-of-sperm-vitrification-protocols-for-two-endangered-salmonid-species-the-adriatic-grayling-thymallus-thymallus-and-the-marble-trout-salmo-marmoratus
#15
Eszter Kása, Jelena Lujić, Zoran Marinović, Tímea Kollár, Gergely Bernáth, Zoltán Bokor, Béla Urbányi, Kinga Katalin Lefler, Dušan Jesenšek, Ákos Horváth
Vitrification was applied to the sperm of two endangered fish species of Soča River basin in Slovenia, the Adriatic grayling (Thymallus thymallus) and marble trout (Salmo marmoratus) following testing different cooling devices and vitrifying media. Sperm was collected, diluted in species-specific non-activating media containing cryoprotectants, and vitrified by plunging directly into liquid nitrogen without pre-cooling. Progressive motility, curvilinear velocity, and straightness of fresh and vitrified-warmed sperm were evaluated with computer-assisted sperm analysis (CASA)...
May 19, 2018: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/29778631/staphylococcus-aureus-bloodstream-infection-in-patients-with-ventricular-assist-devices-management-and-outcome-in-a-prospective-bicenter-cohort
#16
Insa Joost, Wolfgang Bothe, Christine Pausch, Achim Kaasch, Berit Lange, Gabriele Peyerl-Hoffmann, Greta Flüh, Matthias Müller, Christian Schneider, Harald Seifert, Winfried V Kern, Friedhelm Beyersdorf, Siegbert Rieg
OBJECTIVES: Ventricular assist devices (VAD) are increasingly implanted in patients with terminal heart failure. Here we describe the clinical course, management and outcome of VAD patients with S. aureus bloodstream infection (SAB). METHODS: We conducted a post hoc analysis of data from 1073 patients who had been prospectively enrolled in two consecutive SAB bicenter cohort studies. Patients with VAD in situ at the onset of SAB were identified. Follow-up of patients was at least 90 days...
May 17, 2018: Journal of Infection
https://www.readbyqxmd.com/read/29778335/postoperative-atrial-fibrillation-is-not-an-innocuous-arrhythmia-in-patients-with-left-ventricular-assist-devices
#17
EDITORIAL
Cipriano Abad, Stefano Urso, Bernardino Clavo
No abstract text is available yet for this article.
April 27, 2018: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29777372/cardiac-surgery-2017-reviewed
#18
REVIEW
Torsten Doenst, Hristo Kirov, Alexandros Moschovas, David Gonzalez-Lopez, Rauf Safarov, Mahmoud Diab, Steffen Bargenda, Gloria Faerber
For the year 2017, more than 21,000 published references can be found in PubMed when entering the search term "cardiac surgery". This review focusses on conventional cardiac surgery, considering the new interventional techniques only if they were directly compared to classic techniques but also entails aspects of perioperative intensive care management. The publications last year provided a plethora of new and interesting information that helped to quantify classic surgical treatment effects and provided new guidelines for the management of structural heart disease, which made comparisons to interventional techniques easier...
May 17, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29775554/outcomes-and-predictors-of-early-infection-after-heart-transplantation
#19
Kendall C Shultes, Jerrica E Shuster, Scott Micek, Justin M Vader, Keki Balsara, Akinobu Itoh, Bethany R Tellor
BACKGROUND: Limited data exist on the incidence and outcome of early infection after orthotopic heart transplantation (OHT). The purpose of this study was to describe characteristics and outcomes of OHT recipients with an early infection and to identify predictors of such infections. METHODS: This retrospective, single-center study included patients greater than 18 years of age who underwent OHT from February 2009 to May 2014 and had an infection within 30 days of transplantation...
May 18, 2018: Surgical Infections
https://www.readbyqxmd.com/read/29775182/optically-dark-excitonic-states-mediated-exciton-and-biexciton-valley-dynamics-in-monolayer-wse-sub-2-sub
#20
Minghua Zhang, Jiyong Fu, A C Dias, Fanyao Qu
We present a theory to address the photoluminescence (PL) intensity and valley polarization (VP) dynamics in monolayer WSe$_2$, under the impact of excitonic dark states of both excitons and biexcitons. We find that the PL intensity of all excitonic channels including intravalley exciton (X$_{\rm b}$), intravalley biexciton (XX$_{\rm k,k}$) and intervalley biexciton (XX$_{\rm k,k^\prime}$) in particular for the {XX$_{\rm k,k}$} PL is enhanced by laser excitation fluence. In addition, our results indicate the anomalous temperature dependence of PL, i...
May 18, 2018: Journal of Physics. Condensed Matter: An Institute of Physics Journal
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