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https://www.readbyqxmd.com/read/28635956/self-assembled-three-dimensional-network-designs-for-soft-electronics
#1
Kyung-In Jang, Kan Li, Ha Uk Chung, Sheng Xu, Han Na Jung, Yiyuan Yang, Jean Won Kwak, Han Hee Jung, Juwon Song, Ce Yang, Ao Wang, Zhuangjian Liu, Jong Yoon Lee, Bong Hoon Kim, Jae-Hwan Kim, Jungyup Lee, Yongjoon Yu, Bum Jun Kim, Hokyung Jang, Ki Jun Yu, Jeonghyun Kim, Jung Woo Lee, Jae-Woong Jeong, Young Min Song, Yonggang Huang, Yihui Zhang, John A Rogers
Low modulus, compliant systems of sensors, circuits and radios designed to intimately interface with the soft tissues of the human body are of growing interest, due to their emerging applications in continuous, clinical-quality health monitors and advanced, bioelectronic therapeutics. Although recent research establishes various materials and mechanics concepts for such technologies, all existing approaches involve simple, two-dimensional (2D) layouts in the constituent micro-components and interconnects. Here we introduce concepts in three-dimensional (3D) architectures that bypass important engineering constraints and performance limitations set by traditional, 2D designs...
June 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/28634771/off-pump-versus-on-pump-coronary-surgery-in-patients-with-chronic-kidney-disease-a-meta-analysis
#2
Yushu Wang, Sui Zhu, Peijuan Gao, Juteng Zhou, Qing Zhang
BACKGROUND: Patients with chronic kidney disease (CKD) have worse adverse cardiovascular outcomes after coronary artery bypass grafting (CABG). However, the adverse cardiovascular outcomes between off-pump coronary artery bypass grafting (OPCAB) versus on-pump coronary artery bypass grafting (ONCAB) in these patients have been a subject of debate. METHODS: We undertook a comprehensive literature search of PubMed, Embase, and the Cochrane Library database to identify all relevant studies comparing techniques between OPCAB and ONCAB in CKD patients...
June 20, 2017: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/28634554/false-positive-transit-time-flowmetry-graft-failure-in-multivessel-coronary-spasm-following-off-pump-coronary-artery-bypass-grafting
#3
George Kassimis, George Krasopoulos
Intraoperative Transit Time Flowmetry is currently recommended to assess graft patency during coronary artery bypass grafting (CABG), especially in presence of haemodynamic instability or inability to wean the patient from cardiopulmonary bypass, new regional wall motion abnormalities, or significant ventricular arrhythmias. The VeriQ™ system is one of the currently available systems, which detects imperfections that may be corrected by graft revision. In this case report, multivessel coronary spasm (CS) post-CABG interferes with these intraoperative parameters misleading initially into false results...
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/28634364/lipid-changes-8-years-post-gastric-bypass-in-adolescents-with-severe-obesity-fabs-5-study
#4
Amy S Shah, Todd Jenkins, Zhiqian Gao, Stephen R Daniels, Elaine M Urbina, Shelley Kirk, Robert Siegel, Thomas H Inge
OBJECTIVE: Severe obesity in adolescents is increasing and few effective treatments exist. Bariatric surgery is one option, but the extent to which surgery influences cardiovascular risk factors over time in youth is not clear. We hypothesized that Roux-en Y gastric bypass (RYGB) would be associated with sustained improvements in lipids over time (>5 years). PARTICIPANTS/METHODS: Youth who underwent RYGB from 2001-2007 were recruited for the Follow-up of Adolescent Bariatric Surgery-5+ (FABS-5+) in 2011-2014...
June 21, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28634236/alternative-evolutionary-pathways-for-drug-resistant-small-colony-variant-mutants-in-staphylococcus-aureus
#5
Sha Cao, Douglas L Huseby, Gerrit Brandis, Diarmaid Hughes
Staphylococcus aureus is known to generate small colony variants (SCVs) that are resistant to aminoglycoside antibiotics and can cause persistent and recurrent infections. The SCV phenotype is unstable, and compensatory mutations lead to restored growth, usually with loss of resistance. However, the evolution of improved growth, by mechanisms that avoid loss of antibiotic resistance, is very poorly understood. By selection with serial passaging, we isolated and characterized different classes of extragenic suppressor mutations that compensate for the slow growth of small colony variants...
June 20, 2017: MBio
https://www.readbyqxmd.com/read/28633561/regulation-of-energy-homeostasis-after-gastric-bypass-surgery
#6
Martin L Yarmush, Matthew D'Alessandro, Nima Saeidi
The obesity epidemic continues to escalate each year in the United States more than anywhere else in the world. The existing pharmaceutical and other nonsurgical treatments for morbid obesity produce suboptimal physiologic outcomes compared with those of Roux-en-Y gastric bypass (RYGB) surgery. RYGB has been the gold standard of bariatric surgery because the beneficial long-term outcomes, which include sustainable weight loss and type 2 diabetes mellitus (T2DM) resolution, are far superior to those obtained with other bariatric surgeries...
June 21, 2017: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/28633279/off-pump-semicircular-annuloplasty-effective-treatment-of-concurrent-moderate-aortic-regurgitation
#7
Haiming Li, Chengxiong Gu
The treatment of aortic regurgitation (AR) in patients undergoing off-pump coronary artery bypass grafting (CABG) is a difficult problem. Aortic valve repair has become a promising therapy for AR. Various annuloplasty approaches have been used and have gained satisfactory results. Thus we adopted off-pump semicircular annuloplasty to treat concurrent moderate AR in 12 high-risk patients. Early follow-up results showed that this way is simple, safe, and effective.
July 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28633259/mycobacterium-chimaera-infection-after-cardiac-surgery-first-canadian-outbreak
#8
Raphael Hamad, Pierre-Emmanuel Noly, Louis P Perrault, Michel Pellerin, Philippe Demers
Recently reported in Europe and United States, disseminated Mycobacterium chimaera infection is a novel clinical entity linked to point contamination of Stockert 3T heater-cooler units used for cardiopulmonary bypass. We present here the first two cases in Canada. Both patients presented with nonspecific extracardiac symptoms 1 year after undergoing minimally invasive mitral surgical repair. Before the right diagnosis was established, the patients were initially treated with prednisone for suspected sarcoidosis...
July 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28633254/successful-surgical-treatment-of-an-aggressive-pelvic-angiomyxoma-with-intracardiac-extension
#9
Annastiina Husso, Jukka Savola, Jarmo Gunn
We present a case of an intravenous tumor with extension into the right atrium and right ventricle of the heart. Pelvic angiomyxoma is a rare benign tumor, which in this case carried a significant operative risk due to its extension. The patient initially presented with suspected caval and intracardiac thrombus, but unsuccessful treatment led to further investigations. The tumor was extensively dissected from the right atrium, suprarenal vena cava, and left iliac vein on cardiopulmonary bypass and deep hypothermic circulatory arrest...
July 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28632788/high-throughput-identification-and-rational-design-of-synergistic-small-molecule-pairs-for-combating-and-bypassing-antibiotic-resistance
#10
Morgan A Wambaugh, Viplendra P S Shakya, Adam J Lewis, Matthew A Mulvey, Jessica C S Brown
Antibiotic-resistant infections kill approximately 23,000 people and cost $20,000,000,000 each year in the United States alone despite the widespread use of small-molecule antimicrobial combination therapy. Antibiotic combinations typically have an additive effect: the efficacy of the combination matches the sum of the efficacies of each antibiotic when used alone. Small molecules can also act synergistically when the efficacy of the combination is greater than the additive efficacy. However, synergistic combinations are rare and have been historically difficult to identify...
June 2017: PLoS Biology
https://www.readbyqxmd.com/read/28632672/transversus-thoracic-muscle-plane-block-on-a-cadaver-with-history-of-coronary-artery-bypass-grafting
#11
Satoru Fujii, Deepti Vissa, Sugantha Ganapathy, Marjorie Johnson, Jian Zhou
No abstract text is available yet for this article.
July 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28632537/platelet-counts-and-postoperative-stroke-after-coronary-artery-bypass-grafting-surgery
#12
Jörn A Karhausen, Alan M Smeltz, Igor Akushevich, Mary Cooter, Mihai V Podgoreanu, Mark Stafford-Smith, Susan M Martinelli, Manuel L Fontes, Miklos D Kertai
BACKGROUND: Declining platelet counts may reveal platelet activation and aggregation in a postoperative prothrombotic state. Therefore, we hypothesized that nadir platelet counts after on-pump coronary artery bypass grafting (CABG) surgery are associated with stroke. METHODS: We evaluated 6 130 adult CABG surgery patients. Postoperative platelet counts were evaluated as continuous and categorical (mild versus moderate to severe) predictors of stroke. Extended Cox proportional hazard regression analysis with a time-varying covariate for daily minimum postoperative platelet count assessed the association of day-to-day variations in postoperative platelet count with time to stroke...
June 17, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28632147/crossover-iliofemoral-bypass-graft-through-tension-free-abdominal-wall-repair-mesh
#13
Mircea Muresan, Ovidiu Jimborean, Gabriela Jimborean, Radu Neagoe, Serban Bancu, Muresan Simona, Cristian Borz
INTRODUCTION: In vascular surgery the crossover iliofemoral bypass grafting is a well-known surgical technique. In general surgery the repair of an abdominal defect using a Polypropylene mesh is also a standard procedure. A particular technique is defined by the performance of these 2 separate procedures inside a single operation in which the crossover arterial graft is directed from the retroperitoneal space toward the contra-lateral femoral bifurcation through a Polypropylene mesh which closes the musculoaponeurotic layers of the abdominal wall...
June 8, 2017: Annali Italiani di Chirurgia
https://www.readbyqxmd.com/read/28631410/coronary-artery-bypass-grafting-to-treat-coronary-arterial-occlusion-incurred-during-orthotopic-heart-transplantation
#14
Keshava Rajagopal, Indranee Rajapreyar, Biswajit Kar, Pranav Loyalka, Igor D Gregoric
We report a case of left circumflex coronary artery occlusion sustained during orthotopic heart transplantation. Emergent coronary artery bypass grafting was performed, with recovery of cardiac function. The etiology and management of this complication are reviewed.
June 19, 2017: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/28631316/recannulation-of-the-axillary-artery-in-aortic-and-complex-cardiac-surgery
#15
Philippa Jane Temple Bowers, Manu Narain Mathur
OBJECTIVES: Axillary artery cannulation has been used as an alternative site for cardiopulmonary bypass during surgery for aortic dissections and aneurysmal disease of the ascending aorta and arch. This study reports our experience with reusing the axillary artery for cardiopulmonary bypass during complex aortic and cardiac surgical procedures. METHODS: This was a retrospective review of a single surgeon's experience of recannulating the axillary artery for redo operations in complex aortic surgery...
June 19, 2017: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/28631201/seven-esophageal-perforation-cases-after-aortic-replacement-stenting-for-thoracic-aortic-dissection-or-aneurysm
#16
Yoshihisa Yaguchi, Yoshimasa Kumata, Masahiro Horikawa, Takashi Kiyokawa, Tsuyoshi Inaba, Ryoji Fukushima
BACKGROUND: Esophageal perforation after aortic replacement/stenting for aortic dissection or aneurysm is a rare but severe complication. However, its cause, standard treatment, and prognosis are unclear. We analyzed the treatment and outcome retrospectively from seven cases experienced at our hospital. CASE PRESENTATION: The median age of the patients was 70 years (range, 41-86), and six of the seven cases were male. As the first treatment, aortic replacement techniques were performed in five, and thoracic endovascular aortic repair (TEVAR) procedure was performed in two...
December 2017: Surgical Case Reports
https://www.readbyqxmd.com/read/28630948/near-theoretical-gigabit-link-efficiency-for-distributed-data-acquisition-systems
#17
Faisal T Abu-Nimeh, Woon-Seng Choong
Link efficiency, data integrity, and continuity for high-throughput and real-time systems is crucial. Most of these applications require specialized hardware and operating systems as well as extensive tuning in order to achieve high efficiency. Here, we present an implementation of gigabit Ethernet data streaming which can achieve 99.26% link efficiency while maintaining no packet losses. The design and implementation are built on OpenPET, an opensource data acquisition platform for nuclear medical imaging, where (a) a crate hosting multiple OpenPET detector boards uses a User Datagram Protocol over Internet Protocol (UDP/IP) Ethernet soft-core, that is capable of understanding PAUSE frames, to stream data out to a computer workstation; (b) the receiving computer uses Netmap to allow the processing software (i...
March 2017: IEEE transactions on radiation and plasma medical sciences
https://www.readbyqxmd.com/read/28630923/ribosome-rearrangements-at-the-onset-of-translational-bypassing
#18
Xabier Agirrezabala, Ekaterina Samatova, Mariia Klimova, Miguel Zamora, David Gil-Carton, Marina V Rodnina, Mikel Valle
Bypassing is a recoding event that leads to the translation of two distal open reading frames into a single polypeptide chain. We present the structure of a translating ribosome stalled at the bypassing take-off site of gene 60 of bacteriophage T4. The nascent peptide in the exit tunnel anchors the P-site peptidyl-tRNA(Gly) to the ribosome and locks an inactive conformation of the peptidyl transferase center (PTC). The mRNA forms a short dynamic hairpin in the decoding site. The ribosomal subunits adopt a rolling conformation in which the rotation of the small subunit around its long axis causes the opening of the A-site region...
June 2017: Science Advances
https://www.readbyqxmd.com/read/28630304/transitional-turbulent-spots-and-turbulent-turbulent-spots-in-boundary-layers
#19
Xiaohua Wu, Parviz Moin, James M Wallace, Jinhie Skarda, Adrián Lozano-Durán, Jean-Pierre Hickey
Two observations drawn from a thoroughly validated direct numerical simulation of the canonical spatially developing, zero-pressure gradient, smooth, flat-plate boundary layer are presented here. The first is that, for bypass transition in the narrow sense defined herein, we found that the transitional-turbulent spot inception mechanism is analogous to the secondary instability of boundary-layer natural transition, namely a spanwise vortex filament becomes a [Formula: see text] vortex and then, a hairpin packet...
June 19, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28630035/the-effects-of-preoperative-volume-replacement-in-diabetic-patients-undergoing-coronary-artery-bypass-grafting-surgery-protocol-for-a-randomized-controlled-trial-verdict-trial
#20
Madeleine Clout, Tracy Harris, Chris Rogers, Lucy Culliford, Jodi Taylor, Gianni Angelini, Pradeep Narayan, Barnaby Reeves, James Hillier, Kate Ashton, Kunal Sarkar, Raimondo Ascione
BACKGROUND: Diabetes mellitus is a major risk factor for prolonged hospital stays, renal failure, and mortality in patients having coronary artery bypass grafting (CABG). Complications pose a serious threat to patients and prolong intensive care and hospital stays. Low glomerular filtration rate (GFR) due to existing renal impairment or volume depletion may exacerbate acute renal impairment/failure in these patients. Preoperative volume replacement therapy (VRT) is reported to increase the GFR and we hypothesize that VRT will reduce renal impairment and related complications in diabetic patients...
June 19, 2017: JMIR Research Protocols
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