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Johns Hopkins

Kalyan B Bhattacharyya
Walter Edward Dandy did pioneering work in Neurosurgery in the early part of the 19th century. He worked all his life at the Johns Hopkins Hospital in USA and contributed extensively to research in hydrocephalus, the physiology of the cerebrospinal fluid and devised the technique of pneumoencephalography, apart from performing the first clipping operation in cerebral aneurysm and the division of the trigeminal nerve in neuralgic pain. This article summarizes his immense contributions in the field of Neurosurgery...
March 2018: Neurology India
Catherine R Lesko, Bryan Lau, Geetanjali Chander, Richard D Moore
Persons with HIV who have entered care but have viral load > 1500 copies/mL may be the source of the majority of new HIV infections in the United States. We followed patients engaged in continuity care in the Johns Hopkins HIV Clinical Cohort between January 2010 and August 2015. We estimated person-time spent with viral load > 1500 copies/mL while in care after antiretroviral therapy (ART) initiation, while in care, and while alive. Person-time was classified according to the most recent viral load measurement...
March 14, 2018: AIDS and Behavior
Linda X Yin, Gypsyamber D'Souza, William H Westra, Steven J Wang, Annemieke van Zante, Yuehan Zhang, Eleni M Rettig, William R Ryan, Patrick K Ha, Alicia Wentz, Wayne Koch, David W Eisele, Carole Fakhry
OBJECTIVES/HYPOTHESIS: Human papillomavirus (HPV)-positive and HPV-negative oropharyngeal squamous cell carcinoma (OPSCC) are distinct disease entities. Prognostic factors specific to each entity have not been adequately explored. Goals for this study were: 1) to determine whether HPV-positive and HPV-negative OPSCCs have distinct prognostic factors, and 2) to explore the prognostic significance of sex and race in OPSCC after HPV stratification STUDY DESIGN: Retrospective case series...
March 14, 2018: Laryngoscope
Jeong-Ki Kim, Arghavan Louhghalam, Geonhui Lee, Benjamin W Schafer, Denis Wirtz, Dong-Hwee Kim
In the original version of this Article, the affiliation details for Arghavan Louhghalam were incorrectly given as 'Institute for NanoBioTechnology, The Johns Hopkins University, Baltimore, MD, 21218, USA', and it should have been given as 'Department of Civil and Environmental Engineering, University of Massachusetts Dartmouth, Dartmouth, MA 02747, USA'. Furthermore, an incorrect grant number, R1610512, was acknowledged. The correct grant number is NRF-2016R1C1B2015018. These errors have now been corrected in both the PDF and HTML versions of the Article...
March 13, 2018: Nature Communications
Christopher Mallow, Jeffrey Thiboutot, Roy Semaan, Margaret M Hayes, Russell Hales, Ashwin Ram, David Feller-Kopman, Hans Lee, Lonny Yarmus
BACKGROUND AND OBJECTIVE: Malignant airway obstruction (MAO), a common complication of patients with advanced lung cancer, causes debilitating dyspnoea and poor quality of life. Two common interventions used in the treatment of MAO include bronchoscopy with airway stenting and external beam radiotherapy (EBRT). Data are limited regarding their clinical effectiveness and overall effect on survival. METHODS: A retrospective chart review of patients treated with airway stenting and/or EBRT at the Johns Hopkins Hospital for MAO between July 2010 and January 2017 was reviewed...
March 12, 2018: Respirology: Official Journal of the Asian Pacific Society of Respirology
Dea J Kent, Jody N Scardillo, Barbara Dale, Caitlin Pike
PURPOSE: The purpose of this article is to examine the evidence and provide recommendations for the use of clean or sterile dressing technique with dressing application to prevent wound infection. QUESTION: In all persons with acute or chronic wounds, does the use of clean or sterile dressing technique affect incidence of wound infection? SEARCH STRATEGY: A search of the literature was performed by a trained university librarian, which resulted in 473 articles that examined any age group that dealt with application of a wound dressing using either sterile or nonsterile technique...
March 9, 2018: Journal of Wound, Ostomy, and Continence Nursing
Ali Mehdizadeh, Laura Rosella, Afsaneh Alavi, Gary Sibbald, Delaram Farzanfar, Ali Hazrati, Lee Vernich, Audrey Laporte, Howard Hu, Morteza Bashash
BACKGROUND: Hidradenitis suppurativa (HS) is a chronic debilitating disease with long-lasting comorbidities that impose direct and indirect costs on the health care system. However, limited studies have estimated the burden of this disease in Canada, and no population-based studies have previously addressed this condition. OBJECTIVES: This work describes the characteristics of a population-based HS cohort to address the existing knowledge gap on the burden of HS for the Canadian health care system...
March 1, 2018: Journal of Cutaneous Medicine and Surgery
Philip D Hopkins, Tara Mastren, Justyna Florek, Roy Copping, Mark Brugh, Kevin D John, Meiring F Nortier, Eva R Birnbaum, Freddy Kleitz, Michael E Fassbender
The separation of Th, Pa, and U is of high importance in many applications including nuclear power, nuclear waste, environmental and geochemistry, nuclear forensics and nuclear medicine. Diglycolamide (DGA)-based resins have shown the ability to separate many elements, however, these resins consist of non-covalent impregnation of the DGA molecules on the resin backbone resulting in co-elution of the extraction molecule during separation cycles, therefore limiting their long-term and repeated use. Covalently binding the DGA molecules onto silica is one way to overcome this issue...
March 12, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
Nik R Mazumder, Stuart D Russell, Aliaksei Pustavoitau, Matthews Chacko, Nicole Rizkalla, Behnam Saberi, Benjamin Philosophe, Andrew M Cameron, Ahmet Gurakar, Fizza F Naqvi
OBJECTIVES: Liver transplant and simultaneous liver-kidney transplant are major surgeries performed on high-risk individuals with end-stage liver disease and end-stage renal disease. We sought to examine the relationship between pretransplant echocardiographic parameters and outcomes in our simultaneous liver-kidney transplant and liver transplant-alone populations. MATERIALS AND METHODS: In our retrospective analysis, we included adult patients who underwent index transplant from January 1, 2010 to December 31, 2015 at Johns Hopkins Comprehensive Transplant Center...
March 2018: Experimental and Clinical Transplantation
Craig I Coleman, Alexander G G Turpie, Thomas J Bunz, Jan Beyer-Westendorf
PURPOSE: Frailty predicts poorer outcomes in patients receiving anticoagulation. We sought to assess the effectiveness and safety of rivaroxaban versus warfarin in frail patients experiencing venous thromboembolism in routine practice. METHODS: Using United States MarketScan claims data from 1/2012-12/2016, we identified frail patients (using the Johns Hopkins Claims-Based Frailty Indicator score) who had ≥1 primary hospitalization/emergency department visit discharge diagnosis code for venous thromboembolism (index event), received rivaroxaban or warfarin as their first outpatient oral anticoagulant (OAC) within 30-days of the index event and had ≥12-month of insurance coverage prior the index venous thromboembolism (baseline)...
March 8, 2018: American Journal of Medicine
Keri L Calkins, Chelsea E Canan, Richard D Moore, Catherine R Lesko, Bryan Lau
BACKGROUND: Restricted mean survival time (RMST) is an underutilized estimand in time-to-event analyses. Herein, we highlight its strengths by comparing time to (1) all-cause mortality and (2) initiation of antiretroviral therapy (ART) for HIV-infected persons who inject drugs (PWID) and persons who do not inject drugs. METHODS: RMST to death was determined by integrating the Kaplan-Meier survival curve to 5 years of follow-up. To account for the competing risks of death and loss-to-clinic when estimating time to ART, we calculated RMST to ART initiation by estimating the area between the survival curve for ART initiation and the cumulative incidence curve for death or loss-to-clinic...
March 9, 2018: BMC Medical Research Methodology
Yvonne Stallard
PURPOSE: The purpose of this Evidence-Based Report Card was to examine current best evidence related to when and how to perform cultures on chronic wounds to guide clinicians in determining the appropriate treatment. QUESTION: (1) When should cultures be performed on chronic wounds? and (2) What is the best method or technique to perform a culture on a chronic wound? SEARCH STRATEGY: A search of the literature was performed, resulting in 45 publications relevant to the topic...
March 2018: Journal of Wound, Ostomy, and Continence Nursing
Jonathan Hayman, Ryan Phillips, Di Chen, Jamie Perin, Amol K Narang, Janson Trieu, Noura Radwan, Stephen Greco, Curtiland Deville, Todd McNutt, Daniel Y Song, Theodore L DeWeese, Phuoc T Tran
BACKGROUND: Undetectable End of Radiation PSA (EOR-PSA) has been shown to predict improved survival in prostate cancer (PCa). While validating the unfavorable intermediate-risk (UIR) and favorable intermediate-risk (FIR) stratifications among Johns Hopkins PCa patients treated with radiotherapy, we examined whether EOR-PSA could further risk stratify UIR men for survival. METHODS: A total of 302 IR patients were identified in the Johns Hopkins PCa database (178 UIR, 124 FIR)...
March 9, 2018: Prostate
Melissa M Cushing, James Kelley, Ellen Klapper, David F Friedman, Ruchika Goel, Nancy M Heddle, Courtney K Hopkins, Julie Katz Karp, Monica B Pagano, Ajay Perumbeti, Glenn Ramsey, John D Roback, Joseph Schwartz, Beth H Shaz, Philip C Spinella, Claudia S Cohn, Claudia S Cohn, Melissa M Cushing, James Kelley, Ellen Klapper
BACKGROUND: The AABB compiles an annual synopsis of the published literature covering important developments in the field of Transfusion Medicine. For the first time, an abridged version of this work is being made available in TRANSFUSION, with the full-length report available as an Appendix S1 (available as supporting information in the online version of this paper). STUDY DESIGN AND METHODS: Papers published in 2016 and early 2017 are included, as well as earlier papers cited for background...
March 9, 2018: Transfusion
Alessandra M Valcarcel, Kristin A Linn, Simon N Vandekar, Theodore D Satterthwaite, John Muschelli, Peter A Calabresi, Dzung L Pham, Melissa Lynne Martin, Russell T Shinohara
BACKGROUND AND PURPOSE: Magnetic resonance imaging (MRI) is crucial for in vivo detection and characterization of white matter lesions (WMLs) in multiple sclerosis. While WMLs have been studied for over two decades using MRI, automated segmentation remains challenging. Although the majority of statistical techniques for the automated segmentation of WMLs are based on single imaging modalities, recent advances have used multimodal techniques for identifying WMLs. Complementary modalities emphasize different tissue properties, which help identify interrelated features of lesions...
March 8, 2018: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
Maria Chiara Corti, Francesco Avossa, Elena Schievano, Pietro Gallina, Eliana Ferroni, Natalia Alba, Matilde Dotto, Cristina Basso, Silvia Tiozzo Netti, Ugo Fedeli, Domenico Mantoan
BACKGROUND: The Italian National Health Service (NHS) provides universal coverage to all citizens, granting primary and hospital care with a copayment system for outpatient and drug services. Financing of Local Health Trusts (LHTs) is based on a capitation system adjusted only for age, gender and area of residence. We applied a risk-adjustment system (Johns Hopkins Adjusted Clinical Groups System, ACG® System) in order to explain health care costs using routinely collected administrative data in the Veneto Region (North-eastern Italy)...
March 4, 2018: European Journal of Internal Medicine
Sangjun Yoo, Juhyun Park, Sung Yong Cho, Min Chul Cho, Ja Hyeon Ku, Hwancheol Son, Cheol Kwak, Hyeon Hoe Kim, Hyeon Jeong
PURPOSE: We aimed to determine the predictors for the detection of prostate cancer and clinically significant prostate cancer in the setting of repeat prostate biopsy using trans-rectal ultrasonography-guided biopsy. METHODS: A total of 636 patients who underwent repeat prostate biopsy were included. The patients were divided into two groups according to the repeat biopsy results (with vs. without prostate cancer). A multivariable analysis was performed to assess the predictors for the detection of prostate cancer and clinically significant prostate cancer...
March 1, 2018: World Journal of Urology
Diana-Lyn Baptiste, Jill B Hamilton, Cynthia Foronda, Elizabeth Sloand, Beth Fahlberg, Teresa Pfaff, Sabianca Delva, Patricia M Davidson
AIM: The aim of this integrative review is to determine what is known about hypertension among adults living in Haiti. BACKGROUND: Hypertension is the leading cause of morbidity, the identified cause of heart failure in 45% of patients, and is associated with more than 70% of cardiovascular disease-related hospital admissions in Haiti. DESIGN: An integrative review of literature. METHODS: Searching four databases from 2007-2018, Whittemore and Knafl's method was used to review the literature...
March 1, 2018: Journal of Clinical Nursing
Oluwasolape Olawore, Aaron A R Tobian, Joseph Kagaayi, Jeremiah M Bazaale, Betty Nantume, Grace Kigozi, Justine Nankinga, Fred Nalugoda, Gertrude Nakigozi, Godfrey Kigozi, Ronald H Gray, Maria J Wawer, Robert Ssekubugu, John S Santelli, Steven J Reynolds, Larry W Chang, David Serwadda, Mary K Grabowski
BACKGROUND: In sub-Saharan Africa, migrants typically have higher HIV prevalence than non-migrants; however, whether HIV acquisition typically precedes or follows migration is unknown. We aimed to investigate the risk of HIV after migration in Rakai District, Uganda. METHODS: In a prospective population-based cohort of HIV-negative participants aged 15-49 years in Rakai, Uganda, between April 6, 1999, and Jan 30, 2015, we assessed the association between migration and HIV acquisition...
February 23, 2018: Lancet HIV
Anna Kalbarczyk, Nina A Martin, Emily Combs, Marie Ward, Peter J Winch
BACKGROUND: Global Health is an inherently interdisciplinary field but overseas training in global health, particularly among health science institutions, has been an 'individual' or 'individual discipline' experience. Team-based training is an approach to global health education which is increasing in popularity; research on team-training demonstrates that teams are more productive than individuals. In 2015, the Johns Hopkins Center for Global Health (CGH) developed the Global Established Multidisciplinary Sites (GEMS) program, an interdisciplinary training program which was designed to establish a new norm in global health training by bringing interdisciplinary teams of faculty and students together to identify and solve complex global health challenges...
March 1, 2018: Globalization and Health
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