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https://www.readbyqxmd.com/read/28437770/historical-and-contemporary-metal-budgets-for-a-boreal-shield-lake
#1
Shaun A Watmough
Metal concentrations in sediment cores are widely used to reconstruct metal deposition histories, but rarely have metal budgets based on measured inputs (atmospheric deposition and inflows) and lake outflows been compared with metal fluxes estimated from lake sediment cores. In this study, budgets for six metals (As, Cd, Co, Cu, Ni and Pb) were estimated by measuring inputs in bulk deposition, inputs in the major inflow and export in the lake outflow for one hydrologic year (2002-2003) at Plastic Lake, Ontario, Canada...
April 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28437651/population-attributable-risk-associated-with-lung-cancer-induced-by-residential-radon-in-canada-sensitivity-to-relative-risk-model-and-radon-probability-density-function-choices-in-memory-of-professor-jan-m-zielinski
#2
Mo'tassem Al-Arydah
Indoor radon has been identified as the second leading cause of lung cancer after tobacco smoking. The Population Attributable Risk (PAR) estimates the proportion of lung cancer cases associated with indoor radon exposure. Different relative risk (RR) models have been used in the literature to calculate PAR. The aim of this study is to assess how sensitive PAR is to the relative risk model and radon probability distribution functions choices. METHODS: Using Canadian observed first floor radon data collected by Health Canada during the period October 2010 to March 2011, seven common PAR radon models used for North American miners and dwelling scenarios were applied...
April 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28437573/using-internal-and-external-reviewers-can-help-to-optimise-neonatal-mortality-and-morbidity-conferences
#3
Michael-Andrew Assaad, Annie Janvier, Anie Lapointe
AIM: This study determined if there was a difference in the conclusions reached by paediatricians in morbidity and mortality conferences based on their level of involvement in a case. METHODS: All neonatal deaths occurring between August 2014 and September 2015 at Sainte-Justine Hospital, Montreal, Quebec, Canada, were reviewed by internal physicians involved in the case and external physicians who were not. The reviewers were asked to identify positive and negative clinical practice items and provide written recommendations...
April 24, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28437554/molecular-identification-of-cetaceans-from-the-west-atlantic-using-the-e3-i5-region-of-coi
#4
L H O Falcão, A S Campos, J E P Freitas, M A A Furtado-Neto, V V Faria
Molecular identification is very useful in cases where morphology-based species identification is not possible. Examples for its application in cetaceans include the identification of carcasses of stranded animals in advanced state of decomposition and body parts that are illegally traded. One DNA region that is often used for molecular identification is the Folmer region of the mitochondrial gene cytochrome c oxidase subunit I (COI) (locus 48 to 705 bp). This locus has been used for the identification of several animal species, including whales and dolphins...
April 20, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28437520/academic-performance-motor-function-and-behavior-11-years-after-neonatal-caffeine-citrate-therapy-for-apnea-of-prematurity-an-11-year-follow-up-of-the-cap-randomized-clinical-trial
#5
Barbara Schmidt, Robin S Roberts, Peter J Anderson, Elizabeth V Asztalos, Lorrie Costantini, Peter G Davis, Deborah Dewey, Judy D'Ilario, Lex W Doyle, Ruth E Grunau, Diane Moddemann, Harvey Nelson, Arne Ohlsson, Alfonso Solimano, Win Tin
Importance: Caffeine citrate therapy for apnea of prematurity reduces the rates of bronchopulmonary dysplasia, severe retinopathy, and neurodevelopmental disability at 18 months and may improve motor function at 5 years. Objective: To evaluate whether neonatal caffeine therapy is associated with improved functional outcomes 11 years later. Design, Setting, and Participants: A follow-up study was conducted at 14 academic hospitals in Canada, Australia, and the United Kingdom from May 7, 2011, to May 27, 2016, of English- or French-speaking children who had been enrolled in the randomized, placebo-controlled Caffeine for Apnea of Prematurity trial between October 11, 1999, and October 22, 2004...
April 24, 2017: JAMA Pediatrics
https://www.readbyqxmd.com/read/28437470/respiratory-syncytial-virus-neutralizing-serum-antibody-titers-in-infants-following-palivizumab-prophylaxis-with-an-abbreviated-dosing-regimen
#6
Jennifer Claydon, Amitava Sur, Allison Callejas, Mihoko Ladd, Eddie Kwan, Richard Taylor, Stuart E Turvey, Alfonso Solimano, Pascal M Lavoie, Nico Marr
BACKGROUND: Monthly injections of palivizumab during the respiratory syncytial virus (RSV) season in at-risk infants reduces RSV-associated hospitalizations. However, the additive effect of naturally acquired immunity remains unclear. The objective of this study was to assess total neutralizing serum antibodies (NAb) against RSV in at-risk infants who had received an abbreviated course of palivizumab prophylaxis. METHODS: Serum samples were collected from infants enrolled in the RSV Immunoprophylaxis Program in British Columbia, Canada over 2 consecutive RSV seasons (2013 to 2015)...
2017: PloS One
https://www.readbyqxmd.com/read/28437370/ethics-guide-recommendations-for-organ-donation-focused-physicians-endorsed-by-the-canadian-medical-association
#7
Sam D Shemie, Christy Simpson, Jeff Blackmer, Shavaun MacDonald, Sonny Dhanani, Sylvia Torrance, Paul Byrne
Donation physicians are specialists with expertise in organ and tissue donation and have been recognized internationally as a key contributor to improving organ and tissue donation services. Subsequent to a 2011 Canadian Critical Care Society-Canadian Blood Services consultation, the donation physician role has been gradually implemented in Canada. These professionals are generally intensive care unit physicians with an enhanced focus and expertise in organ/tissue donation. They must manage the dual obligation of caring for dying patients and their families while providing and/or improving organ donation services...
May 2017: Transplantation
https://www.readbyqxmd.com/read/28437304/nitrous-oxide-utility-in-labor-and-birth-a-multipurpose-modality
#8
Michelle Collins
The use of nitrous oxide (N2O) for labor and birth has very recently emerged as a viable modality in the United States, despite a long history of use in Canada and Europe. Usually associated with dental procedures, there are significant differences between dental and parturition utility, efficacy, and staff exposure. In addition to using it for pain relief and anxiolysis, those centers utilizing it have noted it to be multipurpose and useful for such situations as: external cephalic version, manual removal of placenta, intravenous starts, during placement of urinary catheters and intracervical Foley bulbs...
April 2017: Journal of Perinatal & Neonatal Nursing
https://www.readbyqxmd.com/read/28437292/use-of-electronic-consultation-system-to-improve-access-to-care-in-pediatric-hematology-oncology
#9
Donna L Johnston, Kimmo Murto, Julia Kurzawa, Clare Liddy, Erin Keely, Lillian Lai
BACKGROUND: Electronic consultations (eConsult) allow for communication between primary care providers and specialists in an asynchronous manner. This study examined provider satisfaction, topics of interest, and efficiency of eConsult in pediatric hematology/oncology in Ottawa, Canada. METHODS: We conducted a cross-sectional assessment of all eConsult cases directed to pediatric hematology/oncology specialists using the Champlain BASE (Building Access to Specialists through eConsultation) eConsult service from June 1, 2014 to May 31, 2016...
April 21, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28436356/association-between-natural-killer-cell-activity-and-prostate-cancer-a-pilot-study
#10
Jack Barkin, Roberto Rodriguez-Suarez, Katia Betito
INTRODUCTION: Natural killer (NK) cells play a significant role in tumor cell immunosurveillance. The association between the activity of NK cells and prostate cancer has previously been demonstrated using conventional research-based tests. MATERIALS AND METHODS: The aim of the present pilot study was to study the association between NK cell activity (NKA) and prostate cancer using a simple blood test. Subjects that had previously been selected for prostate biopsy underwent a blood test for NKA using an in vitro diagnostic device (IVDD) (NK Vue, ATGen Canada Inc...
April 2017: Canadian Journal of Urology
https://www.readbyqxmd.com/read/28435984/patterns-predictors-and-persistence-of-chronic-sedative-use-a-population-based-observational-study-of-older-adults-in-british-columbia-canada
#11
Steven G Morgan, Deirdre Weymann
BACKGROUND: Benzodiazepines and benzodiazepine-like sedatives (zopiclone, zolpidem and zaleplon) are commonly prescribed to treat anxiety and insomnia but are contraindicated for chronic use. We sought to study the persistence, over multiple years, of chronic use of benzodiazepines and benzodiazepine-like sedatives among community-dwelling adults in British Columbia, Canada. METHODS: This is a retrospective analysis of linked health data for adults aged 50 to 69 in 2004 who resided in British Columbia, Canada, between 2004 and 2013...
April 24, 2017: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28435914/factors-predictive-of-topographical-accuracy-in-spine-level-localization
#12
Jin W Tee, Joost Rutges, Travis Marion, John Street, Scott Paquette, Tamir Ailon, Brian K Kwon, Marcel Dvorak, Michael Boyd
BACKGROUND: Pre-operative spine level localization by palpation of anatomical landmarks (ribs, spinous processes) in posterior approaches for surgeries from T4 to L2 is often inaccurate. This can lead to ineffective utilization of procedural time, increased radiation dose, potentially longer skin incision and wrong level surgery. Factors affecting topographical accuracy includes body mass index (BMI) of the patient, congenital or acquired deformity and knowledge of topographical anatomy...
March 2017: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/28435100/montreal-accord-on-patient-reported-outcomes-use-series-paper-5-patient-reported-outcomes-pro-can-be-linked-to-epidemiologic-measures-to-monitor-populations-and-inform-public-health-decisions
#13
Hiroshi Mamiya, Lisa M Lix, William Gardner, Susan J Bartlett, Sara Ahmed, David Buckeridge
BACKGROUND: Comprehensive picture of population health status can be captured by the incorporation of patient reported outcome measures into population health monitoring. OBJECTIVE: To identify current state, opportunities, and future research related to the utilization of patient reported outcome measures for population health monitoring in Canada. DISCUSSIONS: Patient reported outcome measures can help to identify community health needs in public health topics including injury, chronic disease, and communicable disease...
April 20, 2017: Journal of Clinical Epidemiology
https://www.readbyqxmd.com/read/28435081/a-multiple-streams-analysis-of-the-decisions-to-fund-gender-neutral-hpv-vaccination-in-canada
#14
REVIEW
Gilla K Shapiro, Juliet Guichon, Gillian Prue, Samara Perez, Zeev Rosberger
In Canada, the human papillomavirus (HPV.) vaccine is licensed and recommended for females and males. Although all Canadian jurisdictions fund school-based HPV vaccine programs for girls, only six jurisdictions fund school-based HPV vaccination for boys. The research aimed to analyze the factors that underpin government decisions to fund HPV vaccine for boys using a theoretical policy model, Kingdon's Multiple Streams framework. This approach assesses policy development by examining three concurrent, but independent, streams that guide analysis: Problem Stream, Policy Stream, and Politics Stream...
April 20, 2017: Preventive Medicine
https://www.readbyqxmd.com/read/28434884/neurotoxicity-outcomes-in-a-population-based-cohort-of-elderly-patients-treated-with-adjuvant-oxaliplatin-for-colorectal-cancer
#15
Michael J Raphael, Hadas D Fischer, Kinwah Fung, Peter C Austin, Geoffrey M Anderson, Christopher M Booth, Simron Singh
BACKGROUND: The addition of oxaliplatin to adjuvant treatment regimens for colorectal cancer has been shown to improve overall survival at the expense of increased toxicity. The incidence and severity of toxicity might be greater among older patients who might also derive less benefit from oxaliplatin. We evaluated the association between adjuvant oxaliplatin-based chemotherapy and neurotoxicity outcomes in an elderly cohort of patients. PATIENTS AND METHODS: A population-based cohort of patients aged > 65 years with stage II and III colorectal cancer treated with adjuvant therapy in Ontario, Canada was identified using the Ontario Cancer Registry...
March 24, 2017: Clinical Colorectal Cancer
https://www.readbyqxmd.com/read/28434815/is-canada-ready-to-adopt-maternal-placental-growth-factor-testing-to-improve-clinical-outcomes-for-women-with-suspected-preeclampsia
#16
Melissa G Walker, Emmanuel Bujold, John C Kingdom
No abstract text is available yet for this article.
April 20, 2017: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/28434758/mallards-anas-platyrhynchos-and-wastewater-ponds-part-ii-developmental-physiological-morphological-and-behavioural-effects-of-ingestion-of-secondary-clarified-effluent-water
#17
K B Tierney, P O Welsh, M Mills, S Nason, D R Barreda, C A Paszkowski
Rather than migrating, mallard ducks may choose to overwinter in northern cities on open-water thermal refuges, such as municipal wastewater treatment ponds, which in Edmonton, Canada, stay ≥10°C during frigid winter months. Refuging mallards spend appreciable time daily on these ponds and hydrate using secondary clarified municipal wastewater (SCEW). We aimed to determine if SCEW ingestion affected mallard health. To this end, we gavaged newly hatched mallards (domesticated Pekin strain) over their first month with SCEW, as well as water representing negative and positive controls (municipal tap water, and the primary active ingredient from birth control pills, 17α-ethinyl estradiol (EE2), respectively)...
April 20, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28434734/cow-level-associations-of-lameness-behavior-and-milk-yield-of-cows-milked-in-automated-systems
#18
M T M King, S J LeBlanc, E A Pajor, T J DeVries
This study evaluated differences in behavior and productivity between lame and nonlame cows in herds with automated milking systems (AMS). We monitored 30 cows per herd on 41 farms with AMS in Canada (26 herds in Ontario and 15 herds in Alberta). During a 6-d period, milking data (n = 1,184) and lying behavior data (n = 1,209) were collected from cows on 41 farms. Rumination behavior (n = 569) and activity (n = 615) data were available for cows at 22 farms. Locomotion was scored using a numerical rating system (NRS; 1 = sound; 5 = extremely lame)...
April 20, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28434648/nivolumab-in-patients-with-advanced-hepatocellular-carcinoma-checkmate-040-an-open-label-non-comparative-phase-1-2-dose-escalation-and-expansion-trial
#19
Anthony B El-Khoueiry, Bruno Sangro, Thomas Yau, Todd S Crocenzi, Masatoshi Kudo, Chiun Hsu, Tae-You Kim, Su-Pin Choo, Jörg Trojan, Theodore H Welling, Tim Meyer, Yoon-Koo Kang, Winnie Yeo, Akhil Chopra, Jeffrey Anderson, Christine Dela Cruz, Lixin Lang, Jaclyn Neely, Hao Tang, Homa B Dastani, Ignacio Melero
BACKGROUND: For patients with advanced hepatocellular carcinoma, sorafenib is the only approved drug worldwide, and outcomes remain poor. We aimed to assess the safety and efficacy of nivolumab, a programmed cell death protein-1 (PD-1) immune checkpoint inhibitor, in patients with advanced hepatocellular carcinoma with or without chronic viral hepatitis. METHODS: We did a phase 1/2, open-label, non-comparative, dose escalation and expansion trial (CheckMate 040) of nivolumab in adults (≥18 years) with histologically confirmed advanced hepatocellular carcinoma with or without hepatitis C or B (HCV or HBV) infection...
April 20, 2017: Lancet
https://www.readbyqxmd.com/read/28434279/extended-use-of-electronic-health-records-by-primary-care-physicians-does-the-electronic-health-record-artefact-matter
#20
Louis Raymond, Guy Paré, Marie Marchand
The deployment of electronic health record systems is deemed to play a decisive role in the transformations currently being implemented in primary care medical practices. This study aims to characterize electronic health record systems from the perspective of family physicians. To achieve this goal, we conducted a survey of physicians practising in private clinics located in Quebec, Canada. We used valid responses from 331 respondents who were found to be representative of the larger population. Data provided by the physicians using the top three electronic health record software products were analysed in order to obtain statistically adequate sub-sample sizes...
April 1, 2017: Health Informatics Journal
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