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https://www.readbyqxmd.com/read/28644794/electrocardiogram-signal-quality-assessment-based-on-structural-image-similarity-metric
#1
Yalda Shahriari, Richard Fidler, Michele Pelter, Yong Bai, Andrea Villaroman, Xiao Hu
OBJECTIVE: We developed an image-based electrocardiographic (ECG) quality assessment technique that mimics how clinicians annotate ECG signal quality. METHODS: We adopted the Structural Similarity Measure (SSIM) to compare images of two ECG records that are obtained from displaying ECGs in a standard scale. Then a subset of representative ECG images from the training set was selected as templates through a clustering method. SSIM between each image and all the templates were used as the feature vector for the linear discriminant analysis (LDA) classifier...
June 21, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28640314/theory-of-2d-crystals-graphene-and-beyond
#2
Rafael Roldán, Luca Chirolli, Elsa Prada, Jose Angel Silva-Guillén, Pablo San-Jose, Francisco Guinea
This tutorial review presents an overview of the basic theoretical aspects of two-dimensional (2D) crystals. We revise essential aspects of graphene and the new families of semiconducting 2D materials, like transition metal dichalcogenides or black phosphorus. Minimal theoretical models for various materials are presented. Some of the exciting new possibilities offered by 2D crystals are discussed, such as manipulation and control of quantum degrees of freedom (spin and pseudospin), confinement of excitons, control of the electronic and optical properties with strain engineering, or unconventional superconducting phases...
June 22, 2017: Chemical Society Reviews
https://www.readbyqxmd.com/read/28638239/using-transfer-learning-for-improved-mortality-prediction-in-a-data-scarce-hospital-setting
#3
Thomas Desautels, Jacob Calvert, Jana Hoffman, Qingqing Mao, Melissa Jay, Grant Fletcher, Chris Barton, Uli Chettipally, Yaniv Kerem, Ritankar Das
Algorithm-based clinical decision support (CDS) systems associate patient-derived health data with outcomes of interest, such as in-hospital mortality. However, the quality of such associations often depends on the availability of site-specific training data. Without sufficient quantities of data, the underlying statistical apparatus cannot differentiate useful patterns from noise and, as a result, may underperform. This initial training data burden limits the widespread, out-of-the-box, use of machine learning-based risk scoring systems...
2017: Biomedical Informatics Insights
https://www.readbyqxmd.com/read/28636738/impact-of-a-pediatric-anesthesiologist-on-operating-room-efficiency-during-pediatric-tonsillectomies-and-adenotonsillectomies
#4
Nicholas A Dewyer, Yoseph A Kram, Stephen Long, Marika D Russell
We conducted a retrospective case review to determine if the presence of an Accreditation Council for Graduate Medical Education (ACGME) fellowship-trained pediatric anesthesiologist improves efficiency during pediatric tonsillectomies and adenotonsillectomies in hospitals that do not have dedicated pediatric operating rooms and, if so, to determine which specific anesthesia practices might account for such a difference. We reviewed the charts of all patients aged 12 years and younger who had undergone a tonsillectomy or adenotonsillectomy from Jan...
June 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/28636425/ats-nhlbi-asthma-copd-overlap-aco-workshop-report
#5
Prescott G Woodruff, Maarten van den Berge, Richard C Boucher, Christopher Brightling, Esteban G Burchard, Stephanie A Christenson, MeiLan K Han, Michael J Holtzman, Monica Kraft, David A Lynch, Fernando D Martinez, Helen K Reddel, Don D Sin, George R Washko, Sally E Wenzel, Antonello Punturieri, Michelle M Freemer, Robert A Wise
Asthma and COPD are highly prevalent chronic obstructive lung diseases with an associated high burden of disease. Asthma, which is often allergic in origin, frequently begins in infancy or childhood with variable airflow obstruction and intermittent wheezing, cough, and dyspnea. Patients with COPD, in contrast, are usually current or former smokers who present after the age of 40 years with symptoms (often persistent), including dyspnea and a productive cough. Based on age and smoking history, it is often easy to distinguish between asthma and COPD...
June 21, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28632075/-is-marijuana-even-a-drug-a-qualitative-study-of-how-teens-view-marijuana-use-and-why-they-use-it
#6
Bettina Friese
This qualitative study examines how youth in the San Francisco Bay Area perceive marijuana and their motives for using or not using marijuana. Current regular users were more likely to perceive marijuana smoking as an enjoyable activity, comparable to a hobby or sport. Current occasional users commonly reported smoking marijuana when it was offered to them, on special occasions, and sometimes as a result of not wanting to be left out. Most former regular users reported quitting marijuana use due to getting into trouble, being ordered into drug treatment and/or being drug tested...
February 26, 2017: Journal of Psychoactive Drugs
https://www.readbyqxmd.com/read/28629914/mortality-risk-prediction-in-scleroderma-related-interstitial-lung-disease-the-sadl-model
#7
Julie Morisset, Eric Vittinghoff, Brett M Elicker, Xiaowen Hu, Stephanie Le, Jay H Ryu, Kirk D Jones, Anna Haemel, Jeffrey A Golden, Francesco Boin, Brett Ley, Paul J Wolters, Talmadge E King, Harold R Collard, Joyce S Lee
RATIONALE: Interstitial lung disease (ILD) is an important cause of morbidity and mortality in scleroderma (Scl). Risk prediction and prognostication in Scl-ILD patients is challenging because of heterogeneity in the disease course. METHODS: We aimed to develop a clinical mortality risk prediction model for Scl-ILD. Patients with Scl-ILD were identified from two ongoing longitudinal cohorts: 135 patients at the University of California, San Francisco (UCSF, derivation cohort) and 90 patients at the Mayo Clinic (validation cohort)...
June 16, 2017: Chest
https://www.readbyqxmd.com/read/28628527/antiretroviral-prescription-and-viral-suppression-in-a-representative-sample-of-hiv-infected-persons-in-care-in-four-large-metropolitan-areas-of-the-united-states-medical-monitoring-project-2011-figure-dash-2013
#8
Amy Rock Wohl, Nanette Benbow, Judith Tejero, Christopher Johnson, Susan Scheer, Kathleen Brady, Alexandra Gagner, Alison Hughes, Michael Eberhart, Christine Mattson, Jacek Skarbinski
BACKGROUND: Comparisons of ART prescription and viral suppression among people in HIV care across U.S. metropolitan areas are limited. 2011-2013 Medical Monitoring Project data were used to describe and compare associations between socio-demographics and ART prescription and viral suppression for persons receiving HIV care. SETTING: Chicago, Los Angeles County (LAC), Philadelphia, and San Francisco in the United States. METHODS: Bivariate and multivariable methods were used...
June 15, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28628447/environmental-factors-as-key-determinants-for-visceral-leishmaniasis-in-solid-organ-transplant-recipients-madrid-spain
#9
Nerea Carrasco-Antón, Francisco López-Medrano, Mario Fernández-Ruiz, Eugenia Carrillo, Javier Moreno, Ana García-Reyne, Ana Pérez-Ayala, María Luisa Rodríguez-Ferrero, Carlos Lumbreras, Rafael San-Juan, Jorge Alvar, José María Aguado
During a visceral leishmaniasis outbreak in an area of Madrid, Spain, the incidence of disease among solid organ transplant recipients was 10.3% (7/68). Being a black person from sub-Saharan Africa, undergoing transplantation during the outbreak, and residing <1,000 m from the epidemic focus were risk factors for posttransplant visceral leishmaniasis.
July 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28626430/behavior-patterns-of-antisocial-teenagers-interacting-with-parents-and-peers-a-longitudinal-study
#10
Francisco J P Cabrera, Ana Del Refugio C Herrera, San J A Rubalcava, Kalina I M Martínez
Antisocial behavior may begin during childhood and if maintained during adolescence, is likely to continue and escalate during adulthood. During adolescence, in particular, it has been established that antisocial behavior may be reinforced and shaped by exchanges between the teenager and his parents and peers, although the molecular process of these relations is as yet unknown. This paper explores the patterns of social interaction established by adolescents with and without the risk of engaging in antisocial behavior in order to understand the exchanges of them with their most important social groups, during 2 years...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28624977/interaction-of-mammographic-breast-density-with-menopausal-status-and-postmenopausal-hormone-use-in-relation-to-the-risk-of-aggressive-breast-cancer-subtypes
#11
Lusine Yaghjyan, Rulla M Tamimi, Kimberly A Bertrand, Christopher G Scott, Matthew R Jensen, V Shane Pankratz, Kathy Brandt, Daniel Visscher, Aaron Norman, Fergus Couch, John Shepherd, Bo Fan, Yunn-Yi Chen, Lin Ma, Andrew H Beck, Steven R Cummings, Karla Kerlikowske, Celine M Vachon
PURPOSE: We examined the associations of mammographic breast density with breast cancer risk by tumor aggressiveness and by menopausal status and current postmenopausal hormone therapy. METHODS: This study included 2596 invasive breast cancer cases and 4059 controls selected from participants of four nested case-control studies within four established cohorts: the Mayo Mammography Health Study, the Nurses' Health Study, Nurses' Health Study II, and San Francisco Mammography Registry...
June 17, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28624280/technical-note-evaluation-of-endogenous-control-gene-expression-in-bovine-neutrophils-by-reverse-transcription-quantitative-pcr-using-microfluidics-gene-expression-arrays
#12
M A Crookenden, C G Walker, B Kuhn-Sherlock, A Murray, V S R Dukkipati, A Heiser, J R Roche
Reverse-transcription quantitative-PCR (RT-qPCR) is commonly used for assessing the cellular response to changes in physiologic and pathologic conditions. The selection of stable endogenous control genes is an important step of any RT-qPCR study, as expression can vary depending on the experimental environment. Our objective was to identify endogenous control genes in circulating neutrophils isolated from cows during the peripartum period. To do this, we used microfluidics gene expression arrays (Fluidigm, San Francisco, CA) for RT-qPCR analysis...
June 14, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28622401/impact-of-a-pharmacist-conducted-educational-program-on-human-papilloma-virus-vaccination-rates-in-a-low-socioeconomic-population-in-the-city-of-lares-pr
#13
Edda Marie Jiménez-Quiñones, Kyle Melin, Francisco Javier Jiménez-Ramírez
OBJECTIVE: To observe whether local vaccination rates are improved by a patient and physician education program on the human papillomavirus (HPV) vaccine in Farmacia San José, Lares. According to the Puerto Rico Immunization Registry, the HPV vaccine is currently underutilized. METHODS: Patients within the ages of 18 and 26 years who are current patients of Farmacia San José were contacted by phone and approached in person at the pharmacy. Once contacted, patients were provided with educational materials and counseling regarding the risks and benefits of HPV vaccination...
June 2017: Puerto Rico Health Sciences Journal
https://www.readbyqxmd.com/read/28620546/ovarian-morphology-is-associated-with-insulin-resistance-in-women-with-polycystic-ovary-syndrome-a-cross-sectional-study
#14
Sara Pittenger Reid, Chia-Ning Kao, Lauri Pasch, Kanade Shinkai, Marcelle I Cedars, Heather G Huddleston
BACKGROUND: Polycystic ovary syndrome (PCOS) is a very common disorder well known to be associated with insulin resistance and metabolic disease. Insulin resistance is likely involved in the promotion of the PCOS reproductive phenotype and may mediate some of the ovarian morphology seen in the disorder. The phenotype of each individual woman with PCOS can vary widely as can her metabolic risk. METHODS: This is a cross-sectional study of patients seen in a multidisciplinary PCOS clinic at the University of California at San Francisco between 2006 and 2014...
2017: Fertility Research and Practice
https://www.readbyqxmd.com/read/28616270/urinothorax-a-systematic-review
#15
María E Toubes, Adriana Lama, Lucía Ferreiro, Antonio Golpe, José M Álvarez-Dobaño, Francisco J González-Barcala, Esther San José, Nuria Rodríguez-Núñez, Carlos Rábade, Tamara Lourido, Luis Valdés
BACKGROUND: The characteristics of patients with urinothorax (UT) are poorly defined. METHODS: A systematic review was performed searching for studies reporting clinical findings, pleural fluid (PF) characteristics, and the most effective treatment of UT. Case descriptions and retrospective studies were included. RESULTS: The review included 78 studies with a total of 88 patients. Median age was 45 years, male/female ratio was 1.6:1 and in 76% of cases the etiology was trauma...
May 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28615428/increased-rate-of-venous-thrombosis-may-be-associated-with-inpatient-dihydroergotamine-treatment
#16
Amy R Tso, Irene R Patniyot, Amy A Gelfand, Peter J Goadsby
OBJECTIVE: To review whether the incidence of catheter-associated venous thromboses was higher in patients receiving IV dihydroergotamine compared to lidocaine. METHODS: We retrospectively reviewed all admissions at the University of California, San Francisco Headache Center from February 25, 2008, through October 31, 2014, for age, sex, diagnosis, aura, treatment dose, type of IV line used, days with line, superficial (SVT) or deep venous thrombosis (DVT), and pulmonary embolism (PE)...
June 14, 2017: Neurology
https://www.readbyqxmd.com/read/28613352/comparison-of-ranibizumab-and-bevacizumab-for-macular-edema-secondary-to-retinal-vein-occlusions-in-routine-clinical-practice
#17
Mehnaz Khan, Karen M Wai, Fabiana Q Silva, Sunil Srivastava, Justis P Ehlers, Aleksandra Rachitskaya, Amy Babiuch, Ryan Deasy, Peter K Kaiser, Andrew P Schachat, Alex Yuan, Rishi P Singh
BACKGROUND AND OBJECTIVE: To determine outcomes of intravitreal ranibizumab (IVR) (Lucentis; Genentech, South San Francisco, CA) versus bevacizumab (IVB) (Avastin; Genentech, South San Francisco, CA) for treatment of macular edema (ME) secondary to retinal vein occlusion (RVO) in routine clinical practice. PATIENTS AND METHODS: A retrospective study identified treatment-naïve patients with ME secondary to RVO where treatment with either IVB or IVR was initiated...
June 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28611522/radiological-response-and-inflammation-scores-predict-tumour-recurrence-in-patients-treated-with-transarterial-chemoembolization-before-liver-transplantation
#18
Daniele Nicolini, Andrea Agostini, Roberto Montalti, Federico Mocchegiani, Cinzia Mincarelli, Alessandra Mandolesi, Nicola L Robertson, Roberto Candelari, Andrea Giovagnoni, Marco Vivarelli
AIM: To investigate the prognostic value of the radiological response after transarterial chemoembolization (TACE) and inflammatory markers in patients affected by hepatocellular carcinoma (HCC) awaiting liver transplantation (LT). METHODS: We retrospectively evaluated the preoperative predictors of HCC recurrence in 70 patients treated with conventional (n = 16) or doxorubicin-eluting bead TACE (n = 54) before LT. The patient and tumour characteristics, including the static and dynamic alpha-fetoprotein, neutrophil-to-lymphocyte ratio and platelet-to-lymphocyte ratio (PLR) measurements, were recorded...
May 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28611016/how-do-you-relax-when-you-re-stressed-a-content-analysis-and-infodemiology-study-of-stress-related-tweets
#19
Son Doan, Amanda Ritchart, Nicholas Perry, Juan D Chaparro, Mike Conway
BACKGROUND: Stress is a contributing factor to many major health problems in the United States, such as heart disease, depression, and autoimmune diseases. Relaxation is often recommended in mental health treatment as a frontline strategy to reduce stress, thereby improving health conditions. Twitter is a microblog platform that allows users to post their own personal messages (tweets), including their expressions about feelings and actions related to stress and stress management (eg, relaxing)...
June 13, 2017: JMIR Public Health and Surveillance
https://www.readbyqxmd.com/read/28608788/increases-in-the-rate-of-neisseria-gonorrhoeae-among-gay-bisexual-and-other-men-who-have-sex-with-men-findings-from-the-sexually-transmitted-disease-surveillance-network-2010-2015
#20
Mark R Stenger, Preeti Pathela, Greta Anschuetz, Heidi Bauer, Julieann Simon, Robert Kohn, Christina Schumacher, Elizabeth Torrone
BACKGROUND: Inequalities in Neisseria gonorrhoeae (gonorrhea) burden by sexual minority status in the United States are difficult to quantify. Sex of sex partner is not routinely collected for reported cases. Population estimates of men who have sex with men (MSM) necessary to calculate case rates have not been available until recently. For these reasons, trends in reported gonorrhea rates among MSM have not been described across multiple jurisdictions. METHODS: We estimated of the number of MSM cases reported in 6 jurisdictions continuously participating in the STD Surveillance Network 2010-2015 based on interviews with a random sample of cases...
July 2017: Sexually Transmitted Diseases
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