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https://www.readbyqxmd.com/read/28333706/video-based-physiologic-monitoring-during-an-acute-hypoxic-challenge-heart-rate-respiratory-rate-and-oxygen-saturation
#1
Paul S Addison, Dominique Jacquel, David M H Foo, André Antunes, Ulf R Borg
BACKGROUND: The physiologic information contained in the video photoplethysmogram is well documented. However, extracting this information during challenging conditions requires new analysis techniques to capture and process the video image streams to extract clinically useful physiologic parameters. We hypothesized that heart rate, respiratory rate, and oxygen saturation trending can be evaluated accurately from video information during acute hypoxia. METHOD: Video footage was acquired from multiple desaturation episodes during a porcine model of acute hypoxia using a standard visible light camera...
March 22, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28324620/exposure-to-electromagnetic-fields-from-smart-utility-meters-in-gb-part-i-laboratory-measurements
#2
Azadeh Peyman, Darren Addison, Terry Mee, Cristian Goiceanu, Myron Maslanyj, Simon Mann
Laboratory measurements of electric fields have been carried out around examples of smart meter devices used in Great Britain. The aim was to quantify exposure of people to radiofrequency signals emitted from smart meter devices operating at 2.4 GHz, and then to compare this with international (ICNIRP) health-related guidelines and with exposures from other telecommunication sources such as mobile phones and Wi-Fi devices. The angular distribution of the electric fields from a sample of 39 smart meter devices was measured in a controlled laboratory environment...
March 21, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/28316939/application-of-established-pathophysiologic-processes-brings-greater-clarity-to-diagnosis-and-treatment-of-hyponatremia
#3
EDITORIAL
John K Maesaka, Louis J Imbriano, Nobuyuki Miyawaki
Hyponatremia, serum sodium < 135 mEq/L, is the most common electrolyte abnormality and is in a state of flux. Hyponatremic patients are symptomatic and should be treated but our inability to consistently determine the causes of hyponatremia has hampered the delivery of appropriate therapy. This is especially applicable to differentiating syndrome of inappropriate antidiuresis (SIAD) from cerebral salt wasting (CSW) or more appropriately, renal salt wasting (RSW), because of divergent therapeutic goals, to water-restrict in SIAD and administer salt and water in RSW...
March 6, 2017: World Journal of Nephrology
https://www.readbyqxmd.com/read/28315622/subclinical-atherosclerosis-statin-eligibility-and-outcomes-in-african-american-individuals-the-jackson-heart-study
#4
Ravi V Shah, Aferdita Spahillari, Stanford Mwasongwe, J Jeffrey Carr, James G Terry, Robert J Mentz, Daniel Addison, Udo Hoffmann, Jared Reis, Jane E Freedman, Joao A C Lima, Adolfo Correa, Venkatesh L Murthy
Importance: Modern prevention guidelines substantially increase the number of individuals who are eligible for treatment with statins. Efforts to refine statin eligibility via coronary calcification have been studied in white populations but not, to our knowledge, in large African American populations. Objective: To compare the relative accuracy of US Preventive Services Task Force (USPSTF) and American College of Cardiology/American Heart Association (ACC/AHA) recommendations in identifying African American individuals with subclinical and clinical atherosclerotic cardiovascular disease (ASCVD)...
March 18, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/28302179/balanced-crystalloids-versus-saline-in-the-intensive-care-unit-study-protocol-for-a-cluster-randomized-multiple-crossover-trial
#5
Matthew W Semler, Wesley H Self, Li Wang, Daniel W Byrne, Jonathan P Wanderer, Jesse M Ehrenfeld, Joanna L Stollings, Avinash B Kumar, Antonio Hernandez, Oscar D Guillamondegui, Addison K May, Edward D Siew, Andrew D Shaw, Gordon R Bernard, Todd W Rice
BACKGROUND: Saline, the intravenous fluid most commonly administered to critically ill adults, contains a high chloride content, which may be associated with acute kidney injury and death. Whether using balanced crystalloids rather than saline decreases the risk of acute kidney injury and death among critically ill adults remains unknown. METHODS: The Isotonic Solutions and Major Adverse Renal Events Trial (SMART) is a pragmatic, cluster-level allocation, cluster-level crossover trial being conducted between 1 June 2015 and 30 April 2017 in five intensive care units at Vanderbilt University Medical Center in Nashville, TN, USA...
March 16, 2017: Trials
https://www.readbyqxmd.com/read/28301052/decreased-blood-product-usage-during-extracorporeal-life-support-with-reduced-circuit-volumes
#6
Samuel D Addison, Marcia L Buck, Gary Y Fang, James J Gangemi, David A Kaufman
BACKGROUND: Activation and consumption of platelets (PLT) and clotting factors along with hemolysis occurs when blood contacts the extracorporeal life support (ECLS) circuit and its components. STUDY DESIGN AND METHODS: The objective was to examine the effects of reducing ECLS circuit volume by decreasing tubing length and changing components on blood product usage in neonatal and pediatric patients. Blood product administration was analyzed in 40 consecutive patients who required ECLS for respiratory or cardiac failure before (PRE) and after (POST) changes in circuit design and components...
March 16, 2017: Transfusion
https://www.readbyqxmd.com/read/28282254/synthesis-of-two-fluorescent-gtp%C3%AE-s-molecules-and-their-biological-relevance
#7
Denise J Trans, Ruoli Bai, J Bennet Addison, Ruiwu Liu, Ernest Hamel, Matthew A Coleman, Paul T Henderson
Fluorescent GTP analogues are utilized for an assortment of nucleic acid and protein characterization studies. Non-hydrolysable analogues such as GTPγS offer the advantage of keeping proteins in a GTP-bound conformation due to their resistance to hydrolysis into GDP. Two novel fluorescent GTPγS molecules were developed by linking fluorescein and tetramethylrhodamine to the γ-thiophosphate of GTPγS. Chemical and biological analysis of these two compounds revealed their successful synthesis and ability to bind to the nucleotide-binding site of tubulin...
March 10, 2017: Nucleosides, Nucleotides & Nucleic Acids
https://www.readbyqxmd.com/read/28274546/long-term-outcome-of-patients-with-x-linked-adrenoleukodystrophy-a-retrospective-cohort-study
#8
Christel Tran, Jaina Patel, Hewson Stacy, Eva G Mamak, Hanna Faghfoury, Julian Raiman, Joe T R Clarke, Susan Blaser, Saadet Mercimek-Mahmutoglu
BACKGROUND: X-linked adrenoleukodystrophy (X-ALD) is a peroxisomal disorder associated with leukodystrophy, myeloneuropathy and adrenocortical insufficiency. We performed a retrospective cohort study to evaluate long-term outcome of patients with X-ALD. METHOD: All patients with X-ALD diagnosed between 1989 and 2012 were included. Electronic patient charts were reviewed for clinical features, biochemical investigations, molecular genetic testing, neuroimaging, long-term outcome and treatment...
February 21, 2017: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/28272378/perception-of-policy-and-environmental-action-to-promote-healthy-behaviors-in-african-american-communities
#9
Clifton Addison, Brenda W Campbell Jenkins, Monique White, Frances Henderson, Dorothy J McGill, Donna Antoine-LaVigne, Marinelle Payton
The present study aimed to examine the perceptions of African American communities regarding the involvement of political leaders in facilitating policy and environmental change promoting healthy eating and physical activity. We selected the Metro Jackson Area comprised of Hinds, Madison and Rankin Counties because it is a combination of urban and rural communities. The sample consisted of 70 participants from seven sites. A total of seven focus groups were asked to respond to one question to assess political leaders' involvement in healthy living: "When you think about your political leaders that you have in the Jackson, Mississippi area, do any of them promote healthy eating and physical activity?" Focus groups consisted of six to 12 participants and were asked to comment on their participation in physical activity...
March 7, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28269331/video-monitoring-of-oxygen-saturation-during-controlled-episodes-of-acute-hypoxia
#10
Paul S Addison, David M H Foo, Dominique Jacquel, Ulf Borg
A method for extracting video photoplethysmographic information from an RGB video stream is tested on data acquired during a porcine model of acute hypoxia. Cardiac pulsatile information was extracted from the acquired signals and processed to determine a continuously reported oxygen saturation (SvidO2). A high degree of correlation was found to exist between the video and a reference from a pulse oximeter. The calculated mean bias and accuracy across all eight desaturation episodes were -0.03% (range: -0.21% to 0...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269001/an-automatic-quantitative-measurement-method-for-performance-assessment-of-retina-image-registration-algorithms
#11
Ee Ping Ong, Jimmy Addison Lee, Guozhen Xu, Beng Hai Lee, Damon W K Wong
This paper presents a novel automatic quantitative measurement method for assessment of the performance of image registration algorithms designed for registering retina fundus images. To achieve automatic quantitative measurement, we propose the use of edges and edge dissimilarity measure for determining the performance of retina image registration algorithms. Our input is the registered pair of retina fundus images obtained using any of the existing retina image registration algorithms in the literature. To compute edge dissimilarity score, we propose an edge dissimilarity measure that we called "robustified Hausdorff distance"...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268064/combination-of-dabrafenib-plus-trametinib-for-braf-and-mek-inhibitor-pretreated-patients-with-advanced-braf-v600-mutant-melanoma-an-open-label-single-arm-dual-centre-phase-2-clinical-trial
#12
Max Schreuer, Yanina Jansen, Simon Planken, Ines Chevolet, Teofila Seremet, Vibeke Kruse, Bart Neyns
BACKGROUND: Patients with BRAF(V600)-mutant melanoma benefit from treatment with the combination of BRAF and MEK inhibitors, but resistance and disease progression develops in most patients. Preclinical studies and case studies have indicated that acquired resistance to BRAF inhibition can be reversible. We aimed to assess the anti-tumour activity of rechallenge with BRAF plus MEK inhibition in a prospective clinical trial. METHODS: In this open-label, single arm, dual-centre, phase 2 academic study in Belgium, patients aged 18 years or older with BRAF(V600)-mutant melanoma who had previously progressed on BRAF inhibitors (with or without MEK inhibitors) and were off-treatment for at least 12 weeks, were treated with dabrafenib 150 mg orally twice per day plus trametinib 2 mg orally once per day...
March 3, 2017: Lancet Oncology
https://www.readbyqxmd.com/read/28262271/the-impact-of-resin-coating-on-sub-critical-crack-extension-in-a-porcelain-laminate-veneer-material
#13
Xu Cao, Garry J P Fleming, Owen Addison
OBJECTIVES: Characterisation of the interaction between crack extension, crack stabilisation and stress/strain relaxation in the polymeric matrix, the interplay between stress corrosion cracking and the mechanical response of a resin-based luting adhesive within a surface defect population could extend PLV restoration longevity by optimising cementation protocols. The aim was to investigate the influence of stress corrosion cracking and the viscoelastic behaviour of a resin-based luting adhesive independently by controlling the environmental conditions operative during test specimen fabrication...
March 2, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28249989/associations-between-specific-autoimmune-diseases-and-subsequent-dementia-retrospective-record-linkage-cohort-study-uk
#14
Clare J Wotton, Michael J Goldacre
OBJECTIVE: To determine whether hospital admission for autoimmune disease is associated with an elevated risk of future admission for dementia. METHODS: Retrospective, record-linkage cohort study using national hospital care and mortality administrative data, 1999-2012. Cohorts of people admitted to hospital with a range of autoimmune diseases were constructed, along with a control cohort, and followed forward in time to see if they developed dementia. 1 833 827 people were admitted to hospital with an autoimmune disease; the number of people in cohorts for each autoimmune disease ranged from 1019 people in the Goodpasture's syndrome cohort, to 316 043 people in the rheumatoid arthritis cohort...
March 1, 2017: Journal of Epidemiology and Community Health
https://www.readbyqxmd.com/read/28245242/assessing-and-managing-wounds-of-buruli-ulcer-patients-at-the-primary-and-secondary-health-care-levels-in-ghana
#15
Naa Okaikor Addison, Stefanie Pfau, Eric Koka, Samuel Yaw Aboagye, Grace Kpeli, Gerd Pluschke, Dorothy Yeboah-Manu, Thomas Junghanss
BACKGROUND: Beyond Mycobacterium ulcerans-specific therapy, sound general wound management is required for successful management of Buruli ulcer (BU) patients which places them among the large and diverse group of patients in poor countries with a broken skin barrier. METHODS: Clinically BU suspicious patients were enrolled between October 2013 and August 2015 at a primary health care (PHC) center and a municipal hospital, secondary health care (SHC) center in Ghana...
February 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28237135/%C3%A3-la-m%C3%A3-moire-du-dr-david-addison-1940-2016-r%C3%A3-dacteur-en-chef-journal-canadien-d-ophtalmologie-1983-1994
#16
EDITORIAL
David Addison
No abstract text is available yet for this article.
February 2017: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/28237134/remembering-dr-david-addison-1940-2016-editor-in-chief-canadian-journal-of-ophthalmology-1983-1994
#17
EDITORIAL
David Addison
No abstract text is available yet for this article.
February 2017: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/28235729/impaired-quality-and-efficiency-of-sleep-impairs-cognitive-functioning-in-addison-s-disease
#18
Michelle Henry, Ian Louis Ross, Pedro Sofio Abril Wolf, Kevin Garth Flusk Thomas
BACKGROUND: Standard replacement therapy for Addison's disease (AD) does not restore a normal circadian rhythm. Periods of sub- and supra- physiological cortisol levels experienced by patients with AD likely induce disrupted sleep. Given that healthy sleep plays an important role in memory consolidation, the novelty of the current study was to characterise, using objective measures, the relationship between sleep and memory in patients with AD, and to examine the hypothesis that poor sleep is a biological mechanism underlying memory impairment in those patients...
February 11, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28230728/optimistic-bias-risk-factors-and-development-of-high-blood-pressure-and-obesity-among-african-american-adolescents-in-mississippi-usa
#19
Monique S White, Clifton C Addison, Brenda W Campbell Jenkins, Vanessa Bland, Adrianne Clark, Donna Antoine LaVigne
Childhood obesity has reached epidemic proportions and is linked to hypertension among African American youth. Optimistic bias influences behavior of youth causing them to underestimate their susceptibility to negative health outcomes. This study explored adolescent behaviors and prevalence of high blood pressure and obesity in a school district. We examined the relationship between individual health risk practices and optimistic bias on health outcomes; 433 African American high school students were administered a survey and had their obesity and blood pressure measured by the school nurse...
February 20, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28227573/video-monitoring-of-oxygen-saturation-during-controlled-episodes-of-acute-hypoxia
#20
Paul S Addison, David M H Foo, Dominique Jacquel, Ulf Borg, Paul S Addison, David M H Foo, Dominique Jacquel, Ulf Borg, Ulf Borg, Dominique Jacquel, Paul S Addison, David M H Foo
A method for extracting video photoplethysmographic information from an RGB video stream is tested on data acquired during a porcine model of acute hypoxia. Cardiac pulsatile information was extracted from the acquired signals and processed to determine a continuously reported oxygen saturation (SvidO2). A high degree of correlation was found to exist between the video and a reference from a pulse oximeter. The calculated mean bias and accuracy across all eight desaturation episodes were -0.03% (range: -0.21% to 0...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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