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https://www.readbyqxmd.com/read/28227666/advanced-sensors-placement-for-accurate-3d-needle-shape-reconstruction
#1
Pierre-Loup Schaefer, Gregory Chagnon, Alexandre Moreau-Gaudry, Pierre-Loup Schaefer, Gregory Chagnon, Alexandre Moreau-Gaudry, Pierre-Loup Schaefer, Alexandre Moreau-Gaudry, Gregory Chagnon
Needles are tools widely used in minimally invasive surgery. During such procedures the localization of the needle and its tip is a challenging situation because of the needle deformations due to its interactions with tissues. To tackle this problem, instrumented needles with sensors have been currently developed to allow needle reconstruction and tip localization. In conventional surgery this difficulty is overcome by medical imaging. The interest in using an instrumented needle resides in the possible dispense of medical imaging...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28222940/social-media-tips-to-enhance-medical-education
#2
REVIEW
Vikas Shah, Amy L Kotsenas
In this article, we describe how social media can supplement traditional education, articulate the advantages and disadvantages of various social media platforms for both teachers and learners, discuss best practices to maintain confidentiality of protected health information, and provide tips for implementing social media-based teaching into the training curriculum.
February 17, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28217223/long-term-reliability-of-sweet-tip-type-screw-in-leads
#3
Asuka Takano, Gaku Sekita, Minako Watanabe, Hiroshi Mukaida, Sayaka Komatsu, Haruna Tabuchi, Hidemori Hayashi, Takashi Tokano, Masataka Sumiyoshi, Yuji Nakazato, Hiroyuki Daida
BACKGROUND: Active fixation leads have provided stable atrial and ventricular pacing; however, long-term follow-up data have not been satisfactory. The purpose of this study was to investigate the long-term reliability of active fixation leads and their electrical characteristic stability. METHODS: A total of 1196 pacing leads were implanted in 830 patients consecutively between 2002 and 2013. In this retrospective study, we were able to trace 1092 leads in 750 patients to investigate the prognosis of implanted leads...
February 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/28217047/tissue-type-determination-by-impedance-measurement-a-bipolar-and-monopolar-comparison
#4
Jack Sharp, Kaddour Bouazza-Marouf, Dorita Noronha, Atul Gaur
BACKGROUND: In certain medical applications, it is necessary to be able to determine the position of a needle inside the body, specifically with regards to identifying certain tissue types. By measuring the electrical impedance of specific tissue types, it is possible to determine the type of tissue the tip of the needle (or probe) is at. MATERIALS AND METHODS: Two methods have been investigated for electric impedance detection; bipolar and monopolar. Commercially available needle electrodes are of a monopolar type...
January 2017: Saudi Journal of Anaesthesia
https://www.readbyqxmd.com/read/28213598/informing-efficient-randomised-controlled-trials-exploration-of-challenges-in-developing-progression-criteria-for-internal-pilot-studies
#5
Kerry N L Avery, Paula R Williamson, Carrol Gamble, Elaine O'Connell Francischetto, Chris Metcalfe, Peter Davidson, Hywel Williams, Jane M Blazeby
OBJECTIVES: Designing studies with an internal pilot phase may optimise the use of pilot work to inform more efficient randomised controlled trials (RCTs). Careful selection of preagreed decision or 'progression' criteria at the juncture between the internal pilot and main trial phases provides a valuable opportunity to evaluate the likely success of the main trial and optimise its design or, if necessary, to make the decision not to proceed with the main trial. Guidance on the appropriate selection and application of progression criteria is, however, lacking...
February 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/28208922/role-of-routine-subhepatic-abdominal-drain-placement-following-uncomplicated-laparoscopic-cholecystectomy-a-prospective-randomised-study
#6
Ankur Sharma, Sushil Mittal
INTRODUCTION: Routine abdominal drainage after laparoscopy cholecystectomy is an issue of considerable debate. Reason for draining is to detect early bile/blood leak and allow CO2 insufflate during laparoscopy to escape via drain site thereby decreased shoulder tip pain and post-operative nausea and vomiting. But some studies show no difference in post-operative nausea /vomiting/pain between drain and no drain group. AIM: To assess the role of drains following uncomplicated laparoscopic cholecystectomy...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208859/diphtheroids-important-nosocomial-pathogens
#7
Reshmi Chandran, Dinju Raj Puthukkichal, Ethel Suman, Shashidhar Kotian Mangalore
INTRODUCTION: Diphtheroids are defined as aerobic, non-sporulating, pleomorphic Gram-positive bacilli which are more uniformly stained than Corynebacterium diphtheriae, lack the metachromatic granules and are arranged in a palisade manner. They are usually commensals of the skin and mucous membranes. They differ from C.diphtheriae in biochemical rea-ctions as well as in toxin production. Since, they are usually found as commensals on the skin, they are often considered as mere contaminants when isolated from clinical samples...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208801/atomic-force-microscopy-a-powerful-tool-to-address-scaffold-design-in-tissue-engineering
#8
Marica Marrese, Vincenzo Guarino, Luigi Ambrosio
Functional polymers currently represent a basic component of a large range of biological and biomedical applications including molecular release, tissue engineering, bio-sensing and medical imaging. Advancements in these fields are driven by the use of a wide set of biodegradable polymers with controlled physical and bio-interactive properties. In this context, microscopy techniques such as Atomic Force Microscopy (AFM) are emerging as fundamental tools to deeply investigate morphology and structural properties at micro and sub-micrometric scale, in order to evaluate the in time relationship between physicochemical properties of biomaterials and biological response...
February 13, 2017: Journal of Functional Biomaterials
https://www.readbyqxmd.com/read/28208268/medical-swab-analysis-using-desorption-electrospray-ionization-mass-spectrometry-a-noninvasive-approach-for-mucosal-diagnostics
#9
Pamela Pruski, David A MacIntyre, Holly V Lewis, Paolo Inglese, Gonçalo D S Correia, Trevor T Hansel, Phillip R Bennett, Elaine Holmes, Zoltan Takats
Medical swabs are routinely used worldwide to sample human mucosa for microbiological screening with culture methods. These are usually time-consuming and have a narrow focus on screening for particular microorganism species. As an alternative, direct mass spectrometric profiling of the mucosal metabolome provides a broader window into the mucosal ecosystem. We present for the first time a minimal effort/minimal-disruption technique for augmenting the information obtained from clinical swab analysis with mucosal metabolome profiling using desorption electrospray ionization mass spectrometry (DESI-MS) analysis...
February 7, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28191308/ralstonia-mannitolilytica-infections-in-an-oncologic-day-ward-description-of-a-cluster-among-high-risk-patients
#10
Claudia Lucarelli, Enea Gino Di Domenico, Luigi Toma, Domenico Bracco, Grazia Prignano, Maria Fortunati, Lorella Pelagalli, Fabrizio Ensoli, Patrizio Pezzotti, Aurora García-Fernández, Annalisa Pantosti, Loredana Ingrosso
BACKGROUND: Ralstonia spp, an environmental microorganism, has been occasionally associated with healthcare infections. The aim of this study was to investigate an outbreak caused by Ralstonia mannitolilytica in oncology patients. METHODS: Case definition: Oncology outpatients attending a day ward, with positive blood and/or central venous catheter (CVC) culture for Ralstonia spp from September 2013 - June 2014. We analysed medical records, procedures and environmental samples...
2017: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/28188426/non-specific-benign-pathological-results-on-transthoracic-core-needle-biopsy-how-to-differentiate-false-negatives
#11
Jung Im Kim, Chang Min Park, Hyungjin Kim, Jong Hyuk Lee, Jin Mo Goo
OBJECTIVES: To determine the negative predictive value (NPV) of non-specific benign results from cone-beam CT (CBCT)-guided transthoracic core-needle biopsy (TTNB) and identify predicting factors for false-negative for malignancies. METHODS: From January 2009-December 2011, 1,108 consecutive patients with 1,116 lung lesions underwent CBCT-guided TTNB using an 18-gauge coaxial cutting needle. Among them, 226 patients with 226 TTNBs, initially diagnosed as non-specific benign, were included in this study...
February 10, 2017: European Radiology
https://www.readbyqxmd.com/read/28181368/diamond-burr-debridement-vs-grid-keratotomy-in-canine-scced-with-scanning-electron-microscopy-diamond-burr-tip-analysis
#12
Chloe B Spertus, Josef M Brown, Elizabeth A Giuliano
OBJECTIVES: (i) Compare the outcome of canine SCCED treated with grid keratotomy (GK) or diamond burr debridement (DBD); (ii) Serially evaluate morphologic and elemental composition changes to diamond burr tips. ANIMALS STUDIED: A total of 91 eyes of 88 canine SCCED patients treated at the University of Missouri (2005-2015); 75 fresh cadaver porcine globes. PROCEDURES: (i) Medical records were reviewed retrospectively. Data were analyzed for age, sex, breed, procedure performed, eye(s) on which the procedure was performed, time to healing after a single surgical procedure, performance of a second surgical procedure, contact lens placement, and postprocedural complications...
February 9, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28176897/mechanical-characteristics-of-plastic-base-ports-and-impact-on-flushing-efficacy
#13
Gérard Guiffant, Patrice Flaud, Laurent Royon, Espérie Burnet, Jacques Merckx
BACKGROUND: Three types of totally implantable venous access devices, Ports, are currently in use: titanium, plastic (polyoxymethylene, POM), and mixed (titanium base with a POM shell). Physics theory suggests that the interaction between a non-coring needle (NCN, made of stainless steel) and a plastic base would lead to the stronger material (steel) altering the more malleable material (plastic). OBJECTIVES: To investigate whether needle impacts can alter a plastic base's surface, thus potentially reducing flushing efficacy...
2017: Medical Devices: Evidence and Research
https://www.readbyqxmd.com/read/28176618/experience-of-liver-transplant-in-patients-diagnosed-with-budd-chiari-syndrome
#14
Syed Muhammad Raza, Saima Zainab, Ali Reza Shamsaeefar, Saman Nikeghbalian, Seyed Ali Malek Hosseini
OBJECTIVES: Budd-Chiari syndrome can lead to fulminant hepatic failure and cirrhosis. The treatment depends on the severity of disease. Liver transplant is a successful treatment option for those with advanced-stage disease. MATERIALS AND METHODS: In this retrospective study, we analyzed all liver transplants conducted for Budd-Chiari syndrome at the organ transplant unit of Shiraz University of Medical Sciences, Iran, from 1993 to January 2016. Overall, 3201 liver transplant procedures were performed...
February 7, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28174377/-work-related-issues-of-adolescent-and-young-adult-aya-cancer-survivors-tips-for-supporting-them-in-and-out-of-hospitals
#15
Yuko Araki, Miyako Takahashi
Recent advances in cancer treatment have steadily improved the overall survival rate, and enhancing the quality of life of cancer survivors is the challenge faced at present. One of the major topics in studies on cancer survivors is work-related issues, and the government has been focusing on improving the circumstances of the working population and children. In 2015, the Cancer Control Accelerating Plan set adolescent and young adult(AYA)cancer survivors as the top priority for this plan. Work-related issues of AYA cancer survivors are highly individualized and complicated, mainly because of three characteristics: 1 ) Cancer treatments and/or outpatient follow-ups are accompanied by major life-stage transitions, 2 ) Treatments are prone to be nonstandardized in "rare cancers" or "advanced-stage cancers" and 3 ) Achieving economic independence is difficult because of high medical costs...
January 2017: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28164362/mri-based-transfer-function-determination-for-the-assessment-of-implant-safety
#16
J P Tokaya, A J E Raaijmakers, P R Luijten, J F Bakker, C A T van den Berg
PURPOSE: We introduce a new MR-based method to determine the transfer function (TF) for radiofrequency (RF) safety assessment of active implantable medical devices. Transfer functions are implant-specific measures that relate the incident tangential electric field on an (elongated) implant to a scattered electric field at its tip. The proposed method allows for TF determination with a high spatial resolution in relatively fast measurements without requiring dedicated bench setups from MRI images...
February 5, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28160305/modified-tube-gastropexy-using-a-mushroom-tipped-silicone-catheter-for-management-of-gastric-dilatation-volvulus-in-dogs
#17
A Belch, C Rubinos, D C Barnes, P Nelissen
OBJECTIVES: To report the short- and long-term complications and clinical outcomes of a cohort of dogs managed for gastric dilatation-volvulus using a modified right-sided tube gastropexy technique. MATERIALS AND METHODS: Retrospective case series. RESULTS: Of 31 dogs treated, 29 (93·5%) had an excellent short-term outcome, and gastric dilatation-volvulus did not recur in any dog. Twenty-six dogs (84%) were initially fed via the gastrostomy tube postoperatively; three (9·7%) suffered a major complication including septic peritonitis (n=1), and premature tube removal (n=2)...
February 2017: Journal of Small Animal Practice
https://www.readbyqxmd.com/read/28159623/synthetic-biology-era-improving-antibiotic%C3%AC-s-world
#18
REVIEW
Silvia Guzmán-Trampe, Corina D Ceapa, Monserrat Manzo-Ruiz, Sergio Sánchez
The emergence of antibiotic-resistant pathogen microorganisms is a problematic in the context of the current spectrum of available medication. The poor specificity and the high toxicity of some available molecules has made imperative the search for new strategies to improve the specificity and to pursue the discovery of novel compounds with increased bioactivity. Using living cells as platforms, synthetic biology has counteracted this problem by offering novel pathways to create synthetic systems with improved and desired functions...
January 31, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28156208/image-guided-intrathecal-baclofen-pump-catheter-implantation-a-technical-note-and-case-series
#19
Shenandoah Robinson, Faith C Robertson, Hormuzdiyar H Dasenbrock, Cormac P O'Brien, Charles Berde, Horacio Padua
OBJECTIVE Medically refractory spasticity and dystonia are often alleviated with intrathecal baclofen (ITB) administration through an indwelling catheter inserted in the lumbar spine. In patients with cerebral palsy, however, there is a high incidence of concomitant neuromuscular scoliosis. ITB placement may be technically challenging in those who have severe spinal deformity or who have undergone prior instrumented thoracolumbar fusion. Although prior reports have described drilling through the lumbar fusion mass with a high-speed bur, as well as IT catheter implantation at the foramen magnum or cervical spine, these approaches have notable limitations...
February 3, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28153545/assessing-quality-of-life-in-diabetes-i-a-practical-guide-to-selecting-the-best-instruments-and-using-them-wisely
#20
REVIEW
Lawrence Fisher, Tricia Tang, William Polonsky
The rapid development of new medications and devices in diabetes research and clinical care has led to an increased need to assess their impact on health-related quality of life (HRQOL). Unfortunately, the lack of consensus definitions and guidelines has led to the use of HRQOL measures that are often imprecise and inappropriate. The goal of this report is to provide a practical structure to the definition and measurement of HRQOL in diabetes research and clinical care. Following a brief historical background to provide context, we define HRQOL and provide a three-step framework for scale selection: identify the specific, proximal intervention targets; decide how reaching these targets will affect HRQOL; and select appropriate measures based on sample diversity, the intervention and the targets using a 2×2 grid (generic vs...
November 1, 2016: Diabetes Research and Clinical Practice
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