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https://www.readbyqxmd.com/read/28632147/crossover-iliofemoral-bypass-graft-through-tension-free-abdominal-wall-repair-mesh
#1
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/28631868/mn-i-catalyzed-regio-and-stereoselective-1-2-diheteroarylation-of-allenes-combination-of-c-h-activation-and-smiles-rearrangement
#2
Shi-Yong Chen, Xiang-Lei Han, Jia-Qiang Wu, Qingjiang Li, Yunyun Chen, Honggen Wang
Heteroarenes are important structural motif in functional molecules. Reported herein is a Mn(I)-catalyzed 1,2-diheteroarylation of allenes via a C-H activation/Smiles rearrangement cascade. The reaction occurred under additive-free or even solvent-free conditions which allowed the creation of two C-C and one C-N bonds in a single operation. A series of structurally diverse bicyclic or tricyclic compounds bearing an exocyclic double bond were constructed in good to excellent efficiency. The decarboxylative ring-opening of the products led to the facile synthesis of vicinal biheteroaryls...
June 20, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28604089/comparison-of-articaine-and-lidocaine-for-buccal-infiltration-after-inferior-alveolar-nerve-block-for-intraoperative-pain-control-during-impacted-mandibular-third-molar-surgery
#3
Geraldo Prisco da Silva-Junior, Liane Maciel de Almeida Souza, Francisco Carlos Groppo
In order to compare the efficacy of lidocaine and articaine for pain control during third molar surgery, 160 patients presenting bilateral asymptomatic impacted mandibular third molars were selected. They received 1.8 mL of 2% lidocaine with epinephrine 1:100,000 during inferior alveolar nerve block. In group 1 (n = 80), an infiltrative injection of 0.9 mL of 2% lidocaine with epinephrine 1:100,000 was performed in buccal-distal mucosa of the third molar. Group 2 (n = 80) received 0.9 mL of 4% articaine with epinephrine 1:100,000 in the contralateral side...
2017: Anesthesia Progress
https://www.readbyqxmd.com/read/28598614/enantio-and-diastereoselective-spiroketalization-catalyzed-by-chiral-iridium-complex
#4
James Y Hamilton, Simon L Rössler, Erick M Carreira
Iridium-(P,olefin) complex-catalyzed enantio- and diastereoselective formation of substituted spiroketals from racemic, allylic carbonates is reported, which enables the installation of multiple stereogenic centers in a single operation. The protocol was effective for the preparation of a collection of spiroketals of various ring sizes and substituents, including heteroatoms with high enantio- and diastereoselectivity. Furthermore, cascade reactions that couple this enantio- and diastereoselective transformation to additional reversible processes have been achieved to exert concomitant stereocontrol over additional stereogenic centers...
June 21, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28598288/implant-patient-compliance-varies-by-periodontal-treatment-history
#5
Blerina Zeza, Andrea Pilloni, Dimitris N Tatakis, Angelo Mariotti, GianLuca Di Tanna, Claudio Mongardini
BACKGROUND: This retrospective study aimed to assess the compliance to supportive periodontal therapy (SPT) of implant treated patients with different periodontitis history and the possible influence of their compliance on peri-implant marginal bone level. MATERIAL AND METHODS: Dental records of 106 patients treated with at least one dental implant were reviewed. A single operator who did not provide care to the patients recorded the following during the first year of implant function (first year of follow-up), during the first 5 years of follow-up and during the entire follow-up duration: (a) number of recalls; (b) compliance, calculated from registered attendance; (c) periodontal disease history; (d) peri-implant radiographic bone level from most recent examination; and (e) clinical parameters: probing pocket depth (PPD) and bleeding on probing (BOP)...
June 9, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28586601/outcome-of-two-column-acetabular-fractures-treated-operatively-through-single-posterior-approach
#6
Muhammad Naeem Ur Razaq, Muhammad Ayaz Khan, Abbas Ali
OBJECTIVE: Involvement of both columns in acetabular fractures is a common presentation; these fractures create a challenging situation for the surgeons in terms of understanding the dimensions of osseous injury and selection of surgical approach. The study was done with an objective to evaluate the efficacy of single posterior approach for acetabular fractures involving both columns directly reducing the posterior wall and column and indirectly reducing the anterior column. METHODS: An evaluation of 25 adult patients 18 male and 7 female presenting in the accident and emergency department of Khyber Teaching Hospital from December 2013 to June 2015 having acetabular fracture involving both the anterior and posterior column were included in this case series study...
October 2016: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28562734/simultaneous-meningioma-and-brain-metastasis-from-renal-cell-carcinoma-a-rare-presentation-case-report
#7
Aline Lariessy Campos Paiva, João Luiz Vitorino Araujo, Vinícius Ricieri Ferraz, José Carlos Esteves Veiga
CONTEXT: Brain metastases are the most common tumors of the central nervous system. Because of their high frequency, they may be associated with rare situations. Among these are tumor-to-tumor metastasis and an even a rarer situation called simultaneous brain tumors, which are more related to primary tumors of the reproductive and endocrine systems. CASE REPORT: A 56-year-old male patient with a history of renal cell carcinoma (which had previously been resected) presented with a ventricular lesion (suggestive of metastatic origin) and simultaneous olfactory groove lesion (probably a meningioma)...
May 29, 2017: São Paulo Medical Journal, Revista Paulista de Medicina
https://www.readbyqxmd.com/read/28561572/access-to-perfluoroalkyl-substituted-enones-and-indolin-2-ones-via-multicomponent-pd-catalyzed-carbonylative-reactions
#8
Hongfei Yin, Troels Skrydstrup
A simple method for accessing perfluoroalkyl-substituted enones is described applying a four-component palladium-catalyzed carbonylative coupling of aryl boronic acids together with terminal alkynes and perfluoroalkyl iodides in the presence of carbon monoxide. A wide range of highly functionalized enones can thus be prepared in a single operation in good yields. With 2-aminophenylalkynes, an intramolecular aminocarbonylation event overrules providing the indolin-2-one framework. Finally, adaptation of the two-chamber technology expands the method to the synthesis of the aforementioned structures with (13)C-isotope labeling...
June 8, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28553495/dual-gold-and-photoredox-catalysis-visible-light-mediated-intermolecular-atom-transfer-thiosulfonylation-of-alkenes
#9
Haoyu Li, Cuicui Shan, Chen-Ho Tung, Zhenghu Xu
Regioselective difunctionalization of alkenes has attracted significant attention from synthetic chemists and has the advantage of introducing diverse functional groups into vicinal carbons of common alkene moieties in a single operation. Herein, we report an unprecedented intermolecular atom transfer thiosulfonylation reaction of alkenes by combining gold catalysis and visible-light photoredox catalysis. A trifluoromethylthio group (SCF3) and other functionalized thio groups together with a sulfonyl group were regioselectively introduced into alkenes in the most atom economical manner...
April 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/28552834/high-impact-sport-after-hip-resurfacing-the-ironman-triathlon
#10
J Girard, A Lons, T Pommepuy, R Isida, K Benad, S Putman
BACKGROUND: Returning to high-impact sport is an increasingly frequent functional demand following hip replacement. The literature, however, is sparse on the subject, and nonexistent regarding triathlon. We therefore conducted a retrospective study of hip resurfacing in triathlon players, to determine 1) whether it is possible to return to this kind of sport, 2) if so, whether it is possible to return to the same level, and 3) how a resurfaced hip behaves under these conditions. HYPOTHESIS: Hip resurfacing allows return to competition level in long-distance triathlon...
May 25, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28538437/single-operator-ultrasound-guided-central-venous-catheter-insertion-verifies-proper-tip-placement
#11
Ori Galante, Tzachi Slutsky, Lior Fuchs, Alexander Smoliakov, Yuval Mizrakli, Victor Novack, Evgeni Brotfein, Moti Klein, Amit Frenkel, Leonid Koifman, Yaniv Almog
OBJECTIVES: To evaluate whether a single-operator ultrasound-guided, right-sided, central venous catheter insertion verifies proper placement and shortens time to catheter utilization. DESIGN: Prospective observational study with historical controls. SETTING: Adult ICUs. PATIENTS: Sixty-four consecutive patients undergoing ultrasound-assisted right-sided central venous catheterization compared with 92 serial historic controls who had unassisted central catheter insertion at the same sites...
May 22, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28534558/-proposing-a-physiological-model-for-emergency-department-operating-principles-classification-of-overcrowding-and-guidelines-for-redesign
#12
M Herrera Carranza, F Aguado Correa, N Padilla Garrido, F López Camacho
The operation of Emergency Departments (ED) is determined by demand, their own organizational structures and the connection to other medical care levels. When these elements are not simultaneous, it hinders patient flow and decreases capacity, making it necessary to employ a systemic approach to the chain of emergency care as a single operational entity. With this theoretical orientation, we suggest a conceptual model similar to the physiological cardiac output, in which the preload is the demand, the contractile or flow pump is the organizational structure, the afterload is the hospital, the pre-ED valve is primary care and outpatient emergencies, and the post-ED valve is the diagnostic support services and the specialist consultants...
April 30, 2017: Anales del Sistema Sanitario de Navarra
https://www.readbyqxmd.com/read/28522970/automatic-optimization-of-the-computation-graph-in-the-nengo-neural-network-simulator
#13
Jan Gosmann, Chris Eliasmith
One critical factor limiting the size of neural cognitive models is the time required to simulate such models. To reduce simulation time, specialized hardware is often used. However, such hardware can be costly, not readily available, or require specialized software implementations that are difficult to maintain. Here, we present an algorithm that optimizes the computational graph of the Nengo neural network simulator, allowing simulations to run more quickly on commodity hardware. This is achieved by merging identical operations into single operations and restructuring the accessed data in larger blocks of sequential memory...
2017: Frontiers in Neuroinformatics
https://www.readbyqxmd.com/read/28516094/combined-transapical-transcatheter-aortic-valve-replacement-and-thoracic-endovascular-aortic-repair-for-severe-aortic-stenosis-and-arch-aneurysm
#14
Yuanjia Zhu, Eric E Roselli, Jay J Idrees, Samir Kapadia, Lars G Svensson
An 83-year-old male with multiple comorbidities presented with critical aortic stenosis and a saccular aortic arch aneurysm. Through a mini thoracotomy, a balloon expandable transcatheter aortic valve was delivered transapically. A thoracic stent graft was then delivered through the prosthetic valve and deployed in the arch, while a covered stent was deployed in the left common carotid artery. Three-year postoperative computed tomography showed a thrombosed arch aneurysm with decreased size. This case demonstrates the feasibility of using combined transapical transcatheter technologies to treat multicomponent disease in a high-risk patient during a single operation...
October 2016: Aorta (Stamford, Conn.)
https://www.readbyqxmd.com/read/28511237/performance-of-a-fully-disposable-digital-single-operator-cholangiopancreatoscope
#15
Raj J Shah, Isaac Raijman, Brian Brauer, Bora Gumustop, Douglas K Pleskow
Background and study aim Our aim was to evaluate the first use in humans of a new, single-use, digital, single-operator intraductal cholangiopancreatoscopy system (IDCP). Patients and methods Data were collected retrospectively from four US institutions between February 2015 and April 2015. The visual impression of neoplasia or benign findings with IDCP was determined by the performing endoscopist. High grade dysplasia, intraductal papillary mucinous neoplasm, neuroendocrine tumor, and malignancy were categorized as neoplasia...
May 16, 2017: Endoscopy
https://www.readbyqxmd.com/read/28511235/direct-peroral-cholangioscopy-with-a-new-anchoring-technique-using-the-guide-probe-of-kautz-first-clinical-experiences
#16
Frank Lenze, Tobias M Nowacki, Torsten Beyna, Hansjoerg Ullerich
Background and study aims We present the first clinical results of a new tandem technique for direct peroral cholangioscopy using a standard ultraslim upper gastrointestinal endoscope and a guide probe that was originally developed for the non-transendoscopic placement of biliary endoprostheses (guide probe of Kautz; MTW, Wesel, Germany). Patients and methods Twenty direct peroral cholangioscopy procedures were performed with the new anchor-assisted method using the guide probe of Kautz in a single center and were retrospectively analyzed...
May 16, 2017: Endoscopy
https://www.readbyqxmd.com/read/28510742/drug-safety-in-paediatric-anaesthesia
#17
J Kaufmann, A R Wolf, K Becke, M Laschat, F Wappler, T Engelhardt
Life-threatening drug errors are more common in children than in adults. This is likely to be because of their variations in age and weight, combined with the occasional exposure of most anaesthetists to paediatric patients. Drug administration in anaesthesia is mostly undertaken by a single operator and thus represents a potentially greater risk compared with other areas of medicine. This increased risk is believed to be offset by anaesthetists working with only a limited number of drugs on a very frequent and repetitive basis...
May 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28485455/cationic-polycyclization-of-ynamides-building-up-molecular-complexity
#18
Cédric Theunissen, Benoît Métayer, Morgan Lecomte, Nicolas Henry, Hwai-Chien Chan, Guillaume Compain, Phidéline Gérard, Christian Bachmann, Naima Mokhtari, Jérome Marrot, Agnès Martin-Mingot, Sébastien Thibaudeau, Gwilherm Evano
Polycyclization reactions are among the most efficient synthetic tools for the synthesis of complex, polycyclic molecules in a single operation from simple starting materials. We report in this manuscript a full account on the discovery and development of a novel cationic polycyclization from readily available ynamides. Simple activation of these building blocks under acidic conditions enables the generation of highly reactive activated keteniminium ions, which triggers an unprecedented cationic polycyclization yielding highly substituted polycyclic nitrogen heterocycles possessing up to seven fused cycles and three contiguous stereocenters...
May 23, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28467473/users-of-the-main-smartphone-operating-systems-ios-android-differ-only-little-in-personality
#19
Friedrich M Götz, Stefan Stieger, Ulf-Dietrich Reips
The increasingly widespread use of mobile phone applications (apps) as research tools and cost-effective means of vast data collection raises new methodological challenges. In recent years, it has become a common practice for scientists to design apps that run only on a single operating system, thereby excluding large numbers of users who use a different operating system. However, empirical evidence investigating any selection biases that might result thereof is scarce. Henceforth, we conducted two studies drawing from a large multi-national (Study 1; N = 1,081) and a German-speaking sample (Study 2; N = 2,438)...
2017: PloS One
https://www.readbyqxmd.com/read/28464459/accuracy-of-point-of-care-ultrasonography-for-diagnosing-acute-appendicitis-a-systematic-review-and-meta-analysis
#20
Matthew J Fields, Joshua Davis, Carl Alsup, Amanda Bates, Arthur Au, Srikar Adhikari, Isaac Farrell
INTRODUCTION: The use of ultrasonography to diagnose appendicitis has become increasingly common over recent years and is well-established. More recently, point of care ultrasonography (POCUS) has also been studied for the diagnosis of appendicitis, which may also prove a valuable diagnostic tool. The purpose of this study is through systematic review and meta-analysis to identify the test characteristics of POCUS, specifically ultrasonography performed by a non-radiologist physician, in accurately diagnosing acute appendicitis in patients of any age...
May 2, 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
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