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https://www.readbyqxmd.com/read/29239758/efficacy-and-safety-comparison-between-different-types-of-novel-design-enhanced-open-irrigated-ablation-catheters-in-creating-cavo-tricuspid-isthmus-block
#1
Rikuta Hamaya, Shinsuke Miyazaki, Takatsugu Kajiyama, Tomonori Watanabe, Shigeki Kusa, Hiroaki Nakamura, Hitoshi Hachiya, Yoshito Iesaka
BACKGROUND: Clinical utility of irrigation-tip ablation catheters for cavo-tricuspid isthmus (CTI) ablation is established. Recently, new-generation enhanced-cooling irrigation-tip catheters were introduced into clinical use. This study compared the performance of different types of novel irrigation-tip catheters in CTI ablation. METHODS: One hundred patients undergoing CTI ablation with novel irrigated-tip catheters were included. Ablation was performed with a power output of 30-35W using either 4-mm flexible tip catheters [FlexAbility (FAs) St...
November 24, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/29238588/the-role-of-tips-in-the-management-of-liver-transplant-candidates
#2
Lukas W Unger, Theresa Stork, Theresa Bucsics, Susanne Rasoul-Rockenschaub, Katharina Staufer, Michael Trauner, Svenja Maschke, Max Pawloff, Thomas Soliman, Thomas Reiberger, Gabriela A Berlakovich
Background: Transjugular intrahepatic portosystemic shunt (TIPS) implantation is used for treatment of several complications in patients with liver cirrhosis. Recent studies have identified a survival benefit for patients on the waiting list after TIPS implantation, but the optimal time point for TIPS implantation prior to orthotopic liver transplantation (OLT) has not been established. Study: This study retrospectively assessed patients undergoing TIPS implantation before or after listing for OLT at the Medical University of Vienna...
December 2017: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/29230134/guiding-elastic-rods-with-a-robot-manipulated-magnet-for-medical-applications
#3
Louis B Kratchman, Trevor L Bruns, Jake J Abbott, Robert J Webster
Magnet-tipped, elastic rods can be steered by an external magnetic field to perform surgical tasks. Such rods could be useful for a range of new medical applications because they do not require either pull wires or other bulky mechanisms that are problematic in small anatomical regions. However, current magnetic rod steering systems are large and expensive. Here, we describe a method to guide a rod using a robot-manipulated magnet located near a patient. We solve for rod deflections by combining permanent-magnet models with a Kirchhoff elastic rod model and use a resolved-rate approach to compute trajectories...
February 2017: IEEE Transactions on Robotics: a Publication of the IEEE Robotics and Automation Society
https://www.readbyqxmd.com/read/29228966/estimating-the-prevalence-of-infectious-diseases-from-under-reported-age-dependent-compulsorily-notification-databases
#4
Marcos Amaku, Marcelo Nascimento Burattini, Eleazar Chaib, Francisco Antonio Bezerra Coutinho, David Greenhalgh, Luis Fernandez Lopez, Eduardo Massad
BACKGROUND: National or local laws, norms or regulations (sometimes and in some countries) require medical providers to report notifiable diseases to public health authorities. Reporting, however, is almost always incomplete. This is due to a variety of reasons, ranging from not recognizing the diseased to failures in the technical or administrative steps leading to the final official register in the disease notification system. The reported fraction varies from 9 to 99% and is strongly associated with the disease being reported...
December 12, 2017: Theoretical Biology & Medical Modelling
https://www.readbyqxmd.com/read/29224641/design-of-a-bilevel-clinical-trial-targeting-adherence-in-heart-failure-patients-and-their-providers-the-congestive-heart-failure-adherence-redesign-trial-chart
#5
Ashvarya Mangla, Rami Doukky, DeJuran Richardson, Elizabeth F Avery, Rebecca Dawar, James E Calvin, Lynda H Powell
BACKGROUND: Socioeconomically disadvantaged patients are at an increased risk for adverse heart failure (HF) outcomes based upon nonadherence to medications and diet. Physicians are also suboptimally adherent to prescribing evidence-based therapy for HF. METHODS: Congestive Heart Failure Adherence Redesign Trial (CHART) (NCT01698242) is a multicenter, bilevel, cluster randomized behavioral efficacy trial designed to assess the impact of intervening simultaneously on physicians and their socioeconomically disadvantaged patients (annual income <$30,000) having HF with reduced ejection fraction...
January 2018: American Heart Journal
https://www.readbyqxmd.com/read/29219800/-social-awareness-campaign-for-a-ban-on-consumer-fireworks-10-tips-doctor-on-the-barricade
#6
J T H N de Faber, M van Zuilen, M Snouck Hurgronje, J Keunen
- Describe the problem, and show why a social awareness campaign is needed- Know what you are talking about, and explain the medical jargon in plain language- Collect data and facts- Create support among colleagues- Get the media involved- Get support from the community- Create a coalition of supporters via a website- You will discover who the opposition is when you are on the barricade- Offer a safe and healthy alternative - Draw up a long-term roadmap, and persevere.
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/29214793/mesocaval-shunt-creation-for-jejunal-variceal-bleeding-with-chronic-portal-vein-thrombosis
#7
Ja Kyung Yoon, Man Deuk Kim, Do Yun Lee, Seok Joo Han
The creation of transjugular intrahepatic portosystemic shunt (TIPS) is a widely performed technique to relieve portal hypertension, and to manage recurrent variceal bleeding and refractory ascites in patients where medical and/or endoscopic treatments have failed. However, portosystemic shunt creation can be challenging in the presence of chronic portal vein occlusion. In this case report, we describe a minimally invasive endovascular mesocaval shunt creation with transsplenic approach for the management of recurrent variceal bleeding in a portal hypertension patient with intra- and extrahepatic portal vein occlusion...
January 2018: Yonsei Medical Journal
https://www.readbyqxmd.com/read/29200373/retropharyngeal-dissection-by-parker-flex-tip-nasal-endotracheal-tube
#8
Makoto Terumitsu, Mikiko Hirahara, Kenji Seo
Possible complications of nasotracheal intubation include injury to the nasal or pharyngeal mucosa. Dissection of the retropharyngeal tissue by the endotracheal tube is one of the rarer of the more severe complications. Previous studies have indicated that the Parker Flex-Tip (PFT) tracheal tube (Parker Medical, Highlands Ranch, Colo) reduces the incidence of mucosal injury. We experienced a case involving inadvertent retropharyngeal placement of a PFT tube in a 29-year-old patient during nasotracheal intubation under general anesthesia for elective dental treatment...
2017: Anesthesia Progress
https://www.readbyqxmd.com/read/29199391/variations-in-the-practice-of-molecular-radiotherapy-and-implementation-of-dosimetry-results-from-a-european-survey
#9
Katarina Sjögreen Gleisner, Emiliano Spezi, Pavel Solny, Pablo Minguez Gabina, Francesco Cicone, Caroline Stokke, Carlo Chiesa, Maria Paphiti, Boudewijn Brans, Mattias Sandström, Jill Tipping, Mark Konijnenberg, Glenn Flux
BACKGROUND: Currently, the implementation of dosimetry in molecular radiotherapy (MRT) is not well investigated, and in view of the Council Directive (2013/59/Euratom), there is a need to understand the current availability of dosimetry-based MRT in clinical practice and research studies. The aim of this study was to assess the current practice of MRT and dosimetry across European countries. METHODS: An electronic questionnaire was distributed to European countries...
December 4, 2017: EJNMMI Physics
https://www.readbyqxmd.com/read/29194264/navigation-assisted-nasal-bone-osteotomy-for-malunited-fracture
#10
Akihiro Ogino, Kiyoshi Onishi, Miho Nakamichi, Tetsuya Okaneya
BACKGROUND: Nasal bone osteotomy subjectively judges the position for osteotomy by visual inspection and by manual feel using the fingertip. Therefore, the outcome depends on the surgeon's experience and mastery of the procedure is technically challenging. METHODS: The authors applied a navigation system for the intraoperative evaluation of the osteotomy line and reduction position in 5 patients with malunited nasal bone fracture. The authors performed the operation with a temporal bone post developed for otologic surgery using Stealth Station S7 System (Medtronic, Minneapolis, MN)...
November 20, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29183172/endoscopic-submucosal-dissection-of-gastric-neoplasms-using-a-snare-tip
#11
Su Jin Kim, Cheol Woong Choi, Dae Hwan Kang, Hyung Wook Kim, Su Bum Park, Hyeong Seok Nam, Dae Gon Ryu
BACKGROUND: Endoscopic submucosal dissection (ESD) enables the complete removal of gastric lesions regardless of tumor size. ESD is typically performed using one of several available electrocautery knives and endoscopic mucosal resection (EMR) is performed using a diathermic snare. We aimed to investigate the clinical outcomes and complications in patients in whom a snare tip was used for ESD. MATERIALS AND METHODS: We retrospectively evaluated the medical records of 30 patients who underwent removal of a gastric lesion using a snare tip by ESD or hybrid ESD (ESD with snaring)...
November 28, 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/29179617/twelve-tips-for-incorporating-and-teaching-sexual-and-gender-minority-health-in-medical-school-curricula
#12
Michael Solotke, Nicole A Sitkin, Michael L Schwartz, John A Encandela
The World Health Organization has identified many barriers to improving the health of lesbian, gay, bisexual, and transgender (LGBT) patients, including challenges to incorporating and teaching about healthcare for such patients, which we call "sexual and gender minority" (SGM) health content. These challenges include structural and logistical barriers to incorporating SGM health content into undergraduate medical curricula, as well as lack of support in identifying high-quality pedagogical methods for teaching this material...
November 27, 2017: Medical Teacher
https://www.readbyqxmd.com/read/29177222/how-to-organize-a-medical-elective
#13
Georgina Wellstead, Kiron Koshy, Katharine Whitehurst, Buket Gundogan, Alexander J Fowler
The medical elective is often considered a major highlight of the medical school experience. However, organizing an elective can be a daunting experience. From selecting a destination, to securing bursaries, the road is fraught with uncertainty. In this article, we provide some guidance on how to successfully organize a medical elective. This includes the selection of the destination; options for research or clinical practice and tips for budgeting and acquiring travel bursaries.
July 2017: International Journal of Surgery. Oncology
https://www.readbyqxmd.com/read/29177216/how-to-succeed-at-medical-interviews
#14
Kiron Koshy, Katharine Whitehurst, Alison Liu, Buket Gundogan, Alexander Fowler, Riaz Agha
Few people truly relish being interviewed. But as a professional, you will go through a number of interviews in your life that will affect your career progression. In this article, we provide some tips on how best to prepare for a medical interview, both in terms of your portfolio and interview practice. Advice is also given on how to maximize performance during the interview and gain the most from reflection afterwards.
July 2017: International Journal of Surgery. Oncology
https://www.readbyqxmd.com/read/29171333/twelve-tips-for-implementing-effective-service-learning
#15
Denese Playford, Susan Bailey, Colleen Fisher, Ania Stasinska, Lewis Marshall, Michele Gawlinski, Susan Young
Service learning is an educational methodology that facilitates transformation of students' knowledge, attitudes and attitudes around holistic care through work with community organizations. To implement academically, defensible service learning requires faculty endorsement, consideration of course credit, an enthusiastic champion able to negotiate agreements with organizations, organizations' identification of their own projects so they are willing to both fund and supervise them, curricular underpinning that imparts the project skills necessary for success, embedding at a time when students' clinical identity is being formed, small packets of curriculum elements delivered "just in time" as students engage with their project, flexible online platform/s, assessment that is organically related to the project, providing cross cultural up-skilling, and focused on the students' responsibility for their own product...
November 24, 2017: Medical Teacher
https://www.readbyqxmd.com/read/29168554/relation-between-denaturation-time-measured-by-optical-coherence-reflectometry-and-thermal-lesion-depth-during-radiofrequency-cardiac-ablation-feasibility-numerical-study
#16
Ana González-Suárez, David Herranz, Enrique Berjano, Jose L Rubio-Guivernau, Eduardo Margallo-Balbás
BACKGROUND/OBJECTIVE: Radiofrequency (RF) catheter ablation is a minimally invasive medical procedure used to thermally destroy the focus of cardiac arrhythmias. Novel optical techniques are now being integrated into RF catheters in order to detect the changes in tissue properties. Loss of birefringence due to fiber denaturation at around 70°C is related to changes in accumulated phase retardation and can be measured by polarization-sensitive optical coherence reflectometry (PS-OCR)...
November 23, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/29165032/a-new-method-for-evaluating-the-normal-rake-angle-and-inclination-angle-on-medical-needles
#17
Yingqiang Xu, Xuemei Qin, Guowei Liu, Lei Tan, Hongjian Dong, Pengpeng Wei, Qinhe Zhang, Hongcai Zhang
Hollow needles are the most frequently used medical equipment. The design of a hollow needle that best enables medical procedures requires a better understanding of needle tip geometry. Calculating the cutting angles of a needle for a complex surface topology is difficult. This article proposes a new method based on non-Euclidean geometry for the analysis of biopsy needle tip. The method can be used to calculate the cutting angles on any pipe needle. To verify the validity of this method, the normal rake angle and inclination angle on four types of needles (bias bevel needle, cylinder surface needle, curved surface needle and Cournand-type needle) were investigated...
November 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29148713/wireless-acoustic-surface-actuators-for-miniaturized-endoscopes
#18
Tian Qiu, Fabian Adams, Stefano Palagi, Kai Melde, Andrew G Mark, Ulrich Wetterauer, Arkadiusz Miernik, Peer Fischer
Endoscopy enables minimally invasive procedures in many medical fields, such as urology. However, current endoscopes are normally cable-driven, which limits their dexterity and makes them hard to miniaturize. Indeed current urological endoscopes have an outer diameter of about 3 mm and still only possess one bending degree of freedom. In this paper, we report a novel wireless actuation mechanism that increases the dexterity and that permits the miniaturization of a urological endoscope. The novel actuator consists of thin active surfaces that can be readily attached to any device and are wirelessly powered by ultrasound...
November 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29139331/kinematic-modeling-of-a-7-degree-of-freedom-spatial-hybrid-manipulator-for-medical-surgery
#19
Amanpreet Singh, Ekta Singla, Sanjeev Soni, Ashish Singla
The prime objective of this work is to deal with the kinematics of spatial hybrid manipulators. In this direction, in 1955, Denavit and Hartenberg proposed a consistent and concise method, known as D-H parameters method, to deal with kinematics of open serial chains. From literature review, it is found that D-H parameter method is widely used to model manipulators consisting of lower pairs. However, the method leads to ambiguities when applied to closed-loop, tree-like and hybrid manipulators. Furthermore, in the dearth of any direct method to model closed-loop, tree-like and hybrid manipulators, revisions of this method have been proposed from time-to-time by different researchers...
November 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29139285/subradiant-dipolar-interactions-in-plasmonic-nanoring-resonator-array-for-integrated-label-free-biosensing
#20
Yuzhang Liang, Hui Zhang, Wenqi Zhu, Amit Agrawal, Henri J Lezec, Lixia Li, Wei Peng, Yi Zou, Yan-Qing Lu, Ting Xu
With the development of advanced nanofabrication technologies over the last decade, plasmonic nanostructures have attracted wide attention for their potential in label-free biosensing applications. However, the sensing performance of nanostructured plasmonic sensors is primarily limited by the broad-linewidth features with low peak-to-dip signal ratio in the extinction spectra that result from strong radiative damping. Here, we propose and systematically investigate the in-plane and out-of-plane dipolar interactions in an array of plasmonic nanoring resonators that are from the spatial combination of classic nanohole and nanodisk structures...
November 15, 2017: ACS Sensors
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