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https://www.readbyqxmd.com/read/29571911/a-novel-method-for-characterizing-beam-hardening-artifacts-in-cone-beam-computed-tomographic-images
#1
Aaron Fox, Bettina Basrani, Anil Kishen, Ernest W N Lam
INTRODUCTION: The beam hardening (BH) artifact produced by root filling materials in cone-beam computed tomographic (CBCT) images is influenced by their radiologic K absorption edge values. The purpose of this study was to describe a novel technique to characterize BH artifacts in CBCT images produced by 3 root canal filling materials and to evaluate the effects of a zirconium (Zr)-based root filling material with a lower K edge (17.99 keV) on the production of BH artifacts. METHODS: The palatal root canals of 3 phantom model teeth were prepared and root filled with gutta-percha (GP), a Zr root filling material, and calcium hydroxide paste...
March 20, 2018: Journal of Endodontics
https://www.readbyqxmd.com/read/29494226/fta-cards-for-preservation-of-nucleic-acids-for-molecular-assays-a-review-on-the-use-of-cytologic-tissue-samples
#2
Gilda da Cunha Santos
CONTEXT: - Traditional methods for storing histologic and cytologic specimens for future use in molecular assays have consisted of either snap-freezing with cryopreservation or formalin-fixing, paraffin-embedding the samples. Although snap-freezing with cryopreservation is recommended for better preservation of nucleic acids, the infrastructure and space required for archiving impose challenges for high-volume pathology laboratories. Cost-effective, long-term storage at room temperature; relatively easy shipment; and standardized handling can be achieved with formalin-fixed, paraffin-embedded samples, but formalin fixation induces fragmentation and chemical modification of nucleic acids...
March 2018: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/29455682/characterization-of-interventional-studies-of-the-cholera-epidemic-in-haiti
#3
Jessica Miller, Marvin L Birnbaum
In October 2010, the Haitian Ministry of Public Health and Population (MSPP; Port au Prince, Haiti) reported a cholera epidemic caused by contamination of the Artibonite River by a United Nation Stabilization Mission camp. Interventional studies of the subsequent responses, including a descriptive Methods section and systematic approach, may be useful in facilitating comparisons and applying lessons learned to future outbreaks. The purpose of this study was to examine publicly available documents relating to the 2010 cholera outbreak to answer: (1) What information is publicly available on interventional studies conducted during the epidemic, and what was/were the impact(s)? and (2) Can the interventions be compared, and what lessons can be learned from their comparison? A PubMed (National Center for Biotechnology Information, National Institutes of Health; Bethesda, Maryland USA) search was conducted using the parameters "Haiti" and "cholera...
February 19, 2018: Prehospital and Disaster Medicine
https://www.readbyqxmd.com/read/29411286/athletes-with-channelopathy-may-be-eligible-to-play
#4
REVIEW
N M Panhuyzen-Goedkoop, A A M Wilde
The European and Bethesda recommendations roughly state that any athlete with channelopathy is not eligible to participate in sports on a presumed risk of potentially life-threatening ventricular tachycardia or fibrillation. However, eligibility decision-making on a presumed risk of ventricular tachycardia or fibrillation is debatable. Channelopathies are primary electrical cardiac disorders and are usually transmitted as an autosomal dominant trait. Some of the channelopathies are potentially fatal in relation to exercise and predispose to life-threatening cardiac arrhythmias including ventricular tachycardia or fibrillation...
February 6, 2018: Netherlands Heart Journal
https://www.readbyqxmd.com/read/29360291/prospective-study-of-brain-wave-changes-associated-with-cranial-electrotherapy-stimulation
#5
R Gregory Lande, Cynthia T Gragnani
Objective: To explore brain wave changes associated with cranial electrotherapy stimulation (CES) among subjects receiving psychiatric care. Methods: Quantitative electroencephalogram data were obtained before and after a 20-minute session of CES. The investigators recruited active-duty military subjects from Walter Reed National Military Medical Center's Psychiatry Continuity Service, Bethesda, Maryland. Fifty subjects participated in this prospective, convenience sample study from August 2016 through March 2017...
January 18, 2018: Primary Care Companion to CNS Disorders
https://www.readbyqxmd.com/read/29244995/proceedings-of-the-strategy-meeting-for-the-development-of-an-international-consortium-for-chinese-medicine-and-cancer
#6
Jeffrey D White, Hongsheng Lin, Libin Jia, Roy S Wu, Stephen Lam, Jie Li, Jinhui Dou, Nagi Kumar, Lizhu Lin, Lixing Lao
On November 3, 2014, in Bethesda, MD, the Office of Cancer Complementary and Alternative Medicine of the National Cancer Institute held a meeting to examine the potential utility and feasibility of establishing an international consortium for Chinese medicine and cancer. There is significant interest in the West in using components of Chinese medicine (CM) -such as botanicals and herbal medicines, acupuncture and acupressure, and qigong-in the field of oncology, as potential anticancer agents, for symptom management, and to improve quality of life...
December 2017: Journal of Global Oncology
https://www.readbyqxmd.com/read/29223193/quality-indicators-for-evaluating-prehospital-emergency-care-a-scoping-review
#7
Ian Howard, Peter Cameron, Lee Wallis, Maaret Castren, Veronica Lindstrom
Introduction Historically, the quality and performance of prehospital emergency care (PEC) has been assessed largely based on surrogate, non-clinical endpoints such as response time intervals or other crude measures of care (eg, stakeholder satisfaction). However, advances in Emergency Medical Services (EMS) systems and services world-wide have seen their scope and reach continue to expand. This has dictated that novel measures of performance be implemented to compliment this growth. Significant progress has been made in this area, largely in the form of the development of evidence-informed quality indicators (QIs) of PEC...
February 2018: Prehospital and Disaster Medicine
https://www.readbyqxmd.com/read/29165423/meeting-report-a-hard-look-at-the-state-of-enamel-research
#8
REVIEW
Ophir D Klein, Olivier Duverger, Wendy Shaw, Rodrigo S Lacruz, Derk Joester, Janet Moradian-Oldak, Megan K Pugach, J Timothy Wright, Sarah E Millar, Ashok B Kulkarni, John D Bartlett, Thomas Gh Diekwisch, Pamela DenBesten, James P Simmer
The Encouraging Novel Amelogenesis Models and Ex vivo cell Lines (ENAMEL) Development workshop was held on 23 June 2017 at the Bethesda headquarters of the National Institute of Dental and Craniofacial Research (NIDCR). Discussion topics included model organisms, stem cells/cell lines, and tissues/3D cell culture/organoids. Scientists from a number of disciplines, representing institutions from across the United States, gathered to discuss advances in our understanding of enamel, as well as future directions for the field...
November 22, 2017: International Journal of Oral Science
https://www.readbyqxmd.com/read/29077570/determination-of-mean-ionization-potential-using-magnetic-resonance-imaging-for-the-reduction-of-proton-beam-range-uncertainties-theory-and-application
#9
Atchar Sudhyadhom
The accurate determination of mean ionization potential (I m) has the potential to reduce range uncertainty based margins and therefore allow for more focal treatments in proton radiotherapy. Many methods have been proposed to reduce uncertainty in I m and stopping power ratios (SPR), each with varying degrees of accuracy and issues. In this work, we present a simple parameterized model to determine I m in human biological tissue, allowing for the computation of patient-specific I m at the voxel level using magnetic resonance imaging (MRI)...
October 27, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29070553/introduction-to-workshop-on-iron-screening-and-supplementation-in-iron-replete-pregnant-women-and-young-children
#10
REVIEW
Christine L Taylor, Patsy M Brannon
The NIH Office of Dietary Supplements convened a public workshop on iron screening and supplementation in iron-replete pregnant women and young children in 2016 in Bethesda, Maryland. The starting point for the workshop was the recent reports from the US Preventive Services Task Force concluding that there was insufficient evidence to evaluate the benefits and harms associated with iron screening and routine supplementation among asymptomatic pregnant women and young children (6-24 mo old) in the United States...
December 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28795528/limit-of-detection-and-threshold-for-positivity-of-the-centers-for-disease-control-and-prevention-assay-for-factor-viii-inhibitors
#11
C H Miller, B Boylan, A D Shapiro, S R Lentz, B M Wicklund
Essentials Immunologic methods detect factor VIII (FVIII) antibodies in some inhibitor-negative specimens. Specimens were tested by modified Nijmegen-Bethesda assay (NBA) and fluorescence immunoassay. The NBA with preanalytical heat inactivation detects FVIII inhibitors down to 0.2 NBU. IgG4 frequency validates the established threshold for positivity of ≥ 0.5 NBU for this NBA. SUMMARY: Background The Bethesda assay for measurement of factor VIII inhibitors called for quantification of positive inhibitors by using dilutions producing 25-75% residual activity (RA), corresponding to 0...
October 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28770002/six-years-genotype-distribution-of-human-papillomavirus-in-calabria-region-southern-italy-a-retrospective-study
#12
Luisa Galati, Cinzia Peronace, Maria Teresa Fiorillo, Rosanna Masciari, Cristina Giraldi, Salvatore Nisticò, Pasquale Minchella, Vincenzo Maiolo, Giorgio Settimo Barreca, Nadia Marascio, Angelo Giuseppe Lamberti, Aida Giancotti, Maria Gabriella Lepore, Francesca Greco, Maria Vittoria Mauro, Annelisa Borelli, Giuseppa Lo Bocchiaro, Giovanni Surace, Maria Carla Liberto, Alfredo Focà
BACKGROUND: Although analysis of the Human papillomavirus (HPV) genotype spread in a particular area has a crucial impact on public health and prevention programmes, there is a lack of epidemiological data regarding HPV in the Calabria region of Italy. We therefore update information on HPV age/genotype distribution by retrospectively analysing a cohort of women, with and without cervical lesions, living in Calabria, who underwent HPV DNA testing; moreover, we also evaluated HPV age/genotype distribution in a subset of patients with cervical lesions...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28756381/acquired-haemophilia-a-with-a-recalcitrant-high-titre-factor-viii-inhibitor-in-the-setting-of-interstitial-lung-disease
#13
Lova Sun, David B Sykes
Acquired haemophilia A (AHA) is a bleeding disorder that results from autoantibodies against factor VIII (FVIII). A 70-year-old man with a history of interstitial lung disease presented with spontaneous bleeding into his thigh. He had undetectable FVIII levels and a high-titre FVIII inhibitor (>2000ââ'¬â€°Bethesda units/mL) and was diagnosed with AHA. He had several relapses, required multiple haemostatic and immunosuppressive treatments but eventually achieved a stable remission after 2ââ'¬â€°years of therapy...
July 28, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28682854/medical-device-related-pressure-injuries-in-long-term-acute-care-hospital-setting
#14
Mary Arnold-Long, Melissa Ayer, Kathleen Borchert
PURPOSE: The purpose of this study was to examine the epidemiology of medical device-related pressure injuries (MDRPIs) in 3 long-term acute care hospitals (LTACHs). DESIGN: Retrospective descriptive study. SUBJECTS AND SETTING: The sample comprised 304 adult inpatients at 3 geographically diverse LTACHs: Spaulding Hospital for Continued Medical Care, Drake Center, and Bethesda Hospital. The facilities are located in the Northeastern, Southeastern, and Midwestern United States...
July 2017: Journal of Wound, Ostomy, and Continence Nursing
https://www.readbyqxmd.com/read/28682572/carmelo-giordano-1930-2016-a-giant-in-nephrology
#15
Natale De Santo, Carlo De Pascale, Ernesto Quarto, Malcolm E Phillips, Biagio Di Iorio
Carmelo Giordano (Carmine, Louis, Joseph Giordano) was born in Naples on August 23, 1930 in the house of Rafael and Anna Tirone He received the MD cum laude in 1954. He was Fellow and assistant to Professor Flaviano Magrassi and studied nephrology at the Peter Bent Brigham Hospital, University of Harvard in Boston, under the guidance of John P. Merrill (1958-1960). He was nominated Professor of Nephrology at the University Federico II, Naples in 1975 and Professor of Medicine at the Second University of Naples (1986-2002)...
April 2017: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/28516512/defective-%C3%AE-2-antiplasmin-cross-linking-and-thrombus-stability-in-a-case-of-acquired-factor-xiii-deficiency
#16
Joanne L Mitchell, Sonja Wright, Sajida Kazi, Henry G Watson, Nicola J Mutch
Acquired factor XIII (FXIII) deficiency is a rare and life-threatening condition that is often misdiagnosed or missed completely. A 72-year-old woman presented with symptoms of major unprovoked bleeding but routine coagulation screening tests and platelet count were normal. Low activated FXIII (FXIIIa) activity levels and abnormal urea clot stability led to diagnosis of acquired FXIII deficiency. A modified Bethesda inhibitor titre of 1.6 Bethesda units/ml indicated the presence of a FXIII inhibitor. Bleeding responded to a single dose of FXIII concentrate and immunosuppression with prednisolone induced remission...
September 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28457227/nih-workshop-report-on-the-trans-agency-blood-brain-interface-workshop-2016-exploring-key-challenges-and-opportunities-associated-with-the-blood-brain-and-their-interface
#17
REVIEW
Margaret J Ochocinska, Berislav V Zlokovic, Peter C Searson, A Tamara Crowder, Richard P Kraig, Julia Y Ljubimova, Todd G Mainprize, William A Banks, Ronald Q Warren, Andrei Kindzelski, William Timmer, Christina H Liu
A trans-agency workshop on the blood-brain interface (BBI), sponsored by the National Heart, Lung and Blood Institute, the National Cancer Institute and the Combat Casualty Care Research Program at the Department of Defense, was conducted in Bethesda MD on June 7-8, 2016. The workshop was structured into four sessions: (1) blood sciences; (2) exosome therapeutics; (3) next generation in vitro blood-brain barrier (BBB) models; and (4) BBB delivery and targeting. The first day of the workshop focused on the physiology of the blood and neuro-vascular unit, blood or biofluid-based molecular markers, extracellular vesicles associated with brain injury, and how these entities can be employed to better evaluate injury states and/or deliver therapeutics...
May 1, 2017: Fluids and Barriers of the CNS
https://www.readbyqxmd.com/read/28405533/scalp-seeding-post-craniotomy-and-radiosurgery-for-solitary-brain-metastasis-a-case-report-and-systematic-review
#18
Waseem Sharieff, Liam Mulroy, Adrienne Weeks, Samina Mansoor, Rajbir Pahil, Muhammad U Islam
BACKGROUND  : Radiosurgery is being increasingly used post craniotomy for brain metastasis, instead of whole-brain radiation. We report a case of scalp metastasis following craniotomy and radiosurgery, along with a systematic review of the literature. METHODS        : Our patient was a 70-year-old male who presented with a scalp metastasis, two years after craniotomy and radiosurgery, for a solitary brain metastasis from esophageal carcinoma. Using Medline® (United States National Library of Medicine, Bethesda, MD), we performed a systematic review of the literature to identify cases of isolated scalp metastases following craniotomy for brain lesions...
March 7, 2017: Curēus
https://www.readbyqxmd.com/read/28215195/tetanus-a-potential-public-health-threat-in-times-of-disaster
#19
Paige Finkelstein, Laura Teisch, Casey J Allen, Gabriel Ruiz
BACKGROUND: Tetanus is a potentially fatal condition that is rare in urban environments but is seen in developing countries and post-natural-disaster. Therefore, the purpose of this report was to review the epidemiology, pathogenesis, and management of tetanus in the trauma patient. METHODS: A thorough literature review was conducted to look for the most current and thorough guidelines on the prophylaxis and treatment of tetanus. PUBMED (National Center for Biotechnology Information, National Institutes of Health; Bethesda, Maryland USA), MEDLINE (US National Library of Medicine, National Institutes of Health; Bethesda, Maryland USA), and Cochrane Library (The Cochrane Collaboration; Oxford, United Kingdom) databases were searched for articles in English, published from 2005 to 2015, using the keywords "Tetanus," "Trauma/Surgery," and "Disaster...
February 20, 2017: Prehospital and Disaster Medicine
https://www.readbyqxmd.com/read/28134070/earthquake-related-orthopedic-injuries-in-adult-population-a-systematic-review
#20
REVIEW
Michelangelo Bortolin, Ilaria Morelli, Amalia Voskanyan, Nina R Joyce, Gregory R Ciottone
Introduction Earthquake-related trauma results in crush injuries and bony- and soft-tissue trauma. There are no systematic reviews analyzing the typical injury patterns and treatments in "Mega-Mass-Casualty" earthquakes. The characterization of an injury pattern specific to disaster type, be it natural or manmade, is imperative to build an effective disaster preparedness and response system. METHODS: The systematic review was conducted in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA)...
April 2017: Prehospital and Disaster Medicine
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