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Quality assurance

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https://www.readbyqxmd.com/read/28918434/improved-dna-purification-with-quality-assurance-for-evaluation-of-the-microbial-genetic-content-of-constructed-wetlands
#1
Wenda Huang, Jingjing Guo, Ran Tao, Ying Man, Yunv Dai, Yang Yang
Efficient isolation of target DNA is a crucial first step of DNA-based metagenomic analyses of environmental samples. Insufficient quantity and purity of DNA isolated using commercial kits result in missing genetic information, especially for large-diameter substrates in constructed wetlands (CWs). Here, we addressed this problem by devising a cost-effective calcium chloride lysozyme-sodium dodecyl sulfate (SDS) method (CCLS), with key improvements in the steps of humic acid removal and cell lysis. The buffer comprising Tris, EDTA, Na2O2P7 and PVPP (TENP), and skim milk, could reduce adsorption between microorganisms and substrates, and calcium chloride precipitated and removed over 94% of humic acid...
September 16, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28916246/pre-clinical-toxicology-considerations-for-vaccine-development
#2
REVIEW
Nabil Al-Humadi
Vaccine development requires pre-clinical toxicology studies, following good laboratory practice (GLP), before first in human (phase I) use. Many factors are critical in the final outcome of any pre-clinical toxicology study. The study design is one of these critical factors and should be carefully planned to avoid any false negative and/or false positive results. Preparation is another most critical factor in a successful study. Major changes in any procedure during the course of study should be avoided by all means...
September 12, 2017: Vaccine
https://www.readbyqxmd.com/read/28916139/online-adaptive-radiation-therapy
#3
REVIEW
Stephanie Lim-Reinders, Brian M Keller, Shahad Al-Ward, Arjun Sahgal, Anthony Kim
The current paradigm of radiation therapy has the treatment planned on a snapshot dataset of the patient's anatomy taken at the time of simulation. Throughout the course of treatment, this snapshot may vary from initial simulation. Although there is the ability to image patients within the treatment room with technologies such as cone beam computed tomography, the current state of the art is largely limited to rigid-body matching and not accounting for any geometric deformations in the patient's anatomy. A plan that was once attuned to the initial simulation can become suboptimal as the treatment progresses unless improved technologies are brought to bear...
April 24, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28915951/male-contraception-prospects-for-sound-and-ultrasound
#4
Robert Sewak, Bettina Teng, Lee A Learman, Charles H Hennekens
The worldwide human population growth rate, which doubled during the 20th century, as well as the increasing fertility rate, have contributed to an increasing and evolving emphasis on contraception. With respect to female contraceptive methods, many have been developed, marketed, and are widely available. In contrast, male contraception has been limited to condoms, which pose logistical challenges, and vasectomy, which is largely irreversible. The use of sound to achieve effective and safe male contraception is a promising but unproven hypothesis...
September 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28915106/making-sense-of-a-haemolysis-monitoring-and-reporting-system-a-nationwide-longitudinal-multimethod-study-of-68-australian-laboratory-participant-organisations
#5
Ling Li, Elia Vecellio, Stephanie Gay, Rebecca Lake, Mark Mackay, Leslie Burnett, Douglas Chesher, Stephen Braye, Tony Badrick, Johanna I Westbrook, Andrew Georgiou
BACKGROUND: The key incident monitoring and management systems (KIMMS) quality assurance program monitors incidents in the pre- and postanalytical phases of testing in medical laboratories. Haemolysed specimens have been found to be the most frequent preanalytical error and have major implications for patient care. The aims of this study were to assess the suitability of KIMMS for quality reporting of haemolysis and to devise a meaningful method for reporting and monitoring haemolysis...
September 15, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28914990/simulating-the-multi-disciplinary-care-team-approach-enhancing-student-understanding-of-anatomy-through-an-ultrasound-anchored-interprofessional-session
#6
Marianne T Luetmer, Beth A Cloud, James W Youdas, Wojciech Pawlina, Nirusha Lachman
Quality of healthcare delivery is dependent on collaboration between professional disciplines. Integrating opportunities for interprofessional learning in health science education programs prepares future clinicians to function as effective members of a multi-disciplinary care team. This study aimed to create a modified team-based learning (TBL) environment utilizing ultrasound technology during an interprofessional learning activity to enhance musculoskeletal anatomy knowledge of first year medical (MD) and physical therapy (PT) students...
September 15, 2017: Anatomical Sciences Education
https://www.readbyqxmd.com/read/28914747/appropriate-use-criteria-for-cardiac-computed-tomography-does-computed-tomography-have-incremental-value-in-all-appropriate-use-criteria-categories
#7
Fernanda Erthal, Manuja Premaratne, Yeung Yam, Li Chen, Jasmine Lamba, Marissa Keenan, Tony Haddad, Kishu Pharasi, Saipriya Anand, Rob S Beanlands, Ian G Burwash, Girish Dwivedi, Terrence D Ruddy, Benjamin J W Chow
PURPOSE: Cardiac imaging expenditures have come under scrutiny, and a focus on appropriate use criteria (AUC) has arisen to ensure cost-effective resource utilization. Although AUC has been developed by clinical experts, it has not undergone rigorous quality assurance testing to ensure that inappropriate indications for testing yield little clinical benefit. The objective of the study was to evaluate the potential incremental prognostic value of coronary computed tomographic angiography (CCTA) in the different AUC categories...
September 13, 2017: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/28914613/a-novel-system-for-commissioning-brachytherapy-applicators-example-of-a-ring-applicator
#8
Gabriel Paiva Fonseca, Michiel R van den Bosch, Robert Voncken, Mark Podesta, Frank Verhaegen
A novel system was developed to improve commissioning and quality assurance of brachytherapy applicators used in High Dose Rate (HDR). It employs an imaging panel to create reference images and to measure dwell times and dwell positions. As an example: two ring applicators of the same model were evaluated. An applicator was placed on the surface of an imaging panel and a HDR 192Ir source was positioned in an imaging channel above the panel to generate an image of the applicator, using the gamma photons of the brachytherapy source...
September 15, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28914430/position-paper-recommendations-for-a-digital-mammography-quality-assurance-program%C3%A2-v4-0
#9
J C P Heggie, P Barnes, L Cartwright, J Diffey, J Tse, J Herley, I D McLean, F J Thomson, R K Grewal, L T Collins
In 2001 the ACPSEM published a position paper on quality assurance in screen film mammography which was subsequently adopted as a basis for the quality assurance programs of both the Royal Australian and New Zealand College of Radiologists (RANZCR) and of BreastScreen Australia. Since then the clinical implementation of digital mammography has been realised and it has become evident that existing screen-film protocols were not appropriate to assure the required image quality needed for reliable diagnosis or to address the new dose implications resulting from digital technology...
September 15, 2017: Australasian Physical & Engineering Sciences in Medicine
https://www.readbyqxmd.com/read/28914285/hospital-medicine-point-of-care-ultrasound-credentialing-an-example-protocol
#10
Benji K Mathews, Michael Zwank
Though the use of point-of-care ultrasound (POCUS) has increased over the last decade, formal hospital credentialing for POCUS may still be a challenge for hospitalists. This document details the Hospital Medicine Department Ultrasound Credentialing Policy from Regions Hospital, which is part of the HealthPartners organization in Saint Paul, Minnesota. National organizations from internal medicine and hospital medicine (HM) have not published recommended guidelines for POCUS credentialing. Revised guidelines for POCUS have been published by the American College of Emergency Physicians, though these are not likely intended to guide hospitalists when working with credentialing committees and medical boards...
September 2017: Journal of Hospital Medicine: An Official Publication of the Society of Hospital Medicine
https://www.readbyqxmd.com/read/28913684/-telemedicine-in-stroke-care
#11
REVIEW
L Breuer, S Schwab
Telemedicine is already widely used in many telestroke networks and ensures stroke treatment close to the patient's home in rural and medically underserved areas. This is particularly effective when telemedicine is integrated into a stroke unit concept. While telemedically based thrombolysis therapy has become routine practice for many years, practical implementation of comprehensive mechanical thrombectomy and the related processes remains challenging. The main tasks for the future further include development of a structured stroke aftercare system in neurologically underserved areas and permanent assurance of high-quality stroke care in telemedically connected sites...
September 14, 2017: Medizinische Klinik, Intensivmedizin und Notfallmedizin
https://www.readbyqxmd.com/read/28911939/evaluation-of-airborne-sensory-irritants-for-setting-exposure-limits-or-guidelines-a-systematic-approach
#12
REVIEW
Gunnar Damgaard Nielsen, Peder Wolkoff
Sensory irritation of eyes and upper airways is an important endpoint for setting occupational exposure limits (OELs) and indoor air guidelines. Sensory irritants cause a painful burning, stinging and itching sensation. Controlled chamber studies are the "golden standard" for evaluations. Well conducted workplace studies offer another possibility. For generalization, the number of participants and their age, smoking, gender, and prior exposure, experience and mood has to be considered. Exposure assessments have to be reliable and exposure duration sufficiently long to establish time-response relationships...
September 11, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/28910091/bioassay-guided-isolation-of-antioxidant-and-cytoprotective-constituents-from-a-maqui-berry-aristotelia-chilensis-dietary-supplement-ingredient-as-markers-for-qualitative-and-quantitative-analysis
#13
Jie Li, Chunhua Yuan, Li Pan, P Annécie Benatrehina, Heebyung Chai, William J Keller, C Benjamin Naman, A Douglas Kinghorn
Bioassay-guided phytochemical investigation of a commercially available maqui berry (Aristotelia chilensis) extract used in botanical dietary supplement products led to the isolation of 16 compounds, including one phenolic molecule, 1, discovered for the first time from a natural source, along with several known compounds, 2-16, including three substances not reported previously in A. chilensis, 2, 14, and 15. Each isolate was characterized by detailed analysis of NMR spectroscopic and HRESIMS data, and tested for their in vitro hydroxyl radical scavenging and quinone-reductase inducing biological activities...
September 14, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28905657/selecting-a-risk-based-sqc-procedure-for-a-hba1c-total-qc-plan
#14
Sten A Westgard, Hassan Bayat, James O Westgard
BACKGROUND: Recent US practice guidelines and laboratory regulations for quality control (QC) emphasize the development of QC plans and the application of risk management principles. The US Clinical Laboratory Improvement Amendments (CLIA) now includes an option to comply with QC regulations by developing an individualized QC plan (IQCP) based on a risk assessment of the total testing process. The Clinical and Laboratory Standards Institute (CLSI) has provided new practice guidelines for application of risk management to QC plans and statistical QC (SQC)...
September 1, 2017: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/28904038/facilitated-access-to-an-integrated-model-of-care-for-arthritis-in-an-urban-aboriginal-population
#15
Cheryl Barnabe, Stacy Lockerbie, Elizabeth Erasmus, Lynden Crowshoe
OBJECTIVE: To evaluate a model of care to improve arthritis detection and treatment in an urban Aboriginal population. DESIGN: Cohort study. SETTING: The Elbow River Healing Lodge in Calgary, Alta. PARTICIPANTS: A total of 26 participants with noninflammatory arthritis and 12 with inflammatory arthritis. INTERVENTION: A monthly rheumatology clinic was embedded in the primary health care service and received referrals from primary care providers and allied health care professionals, or self-referrals...
September 2017: Canadian Family Physician Médecin de Famille Canadien
https://www.readbyqxmd.com/read/28903823/results-of-survey-regarding-prevalence-of-adventitial-infections-in-mice-and-rats-at-biomedical-research-facilities
#16
James O Marx, Diane J Gaertner, Abigail L Smith
Control of rodent adventitial infections in biomedical research facilities is of extreme importance in assuring both animal welfare and high-quality research results. Sixty-three U.S. institutions participated in a survey reporting the methods used to detect and control these infections and the prevalence of outbreaks from 1 January 2014 through 31 December 2015. These results were then compared with the results of 2 similar surveys published in 1998 and 2008. The results of the current survey demonstrated that the rate of viral outbreaks in mouse colonies was decreasing, particularly in barrier facilities, whereas the prevalence of parasitic outbreaks has remained constant...
September 1, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28903758/factors-associated-with-malaria-microscopy-diagnostic-performance-following-a-pilot-quality-assurance-programme-in-health-facilities-in-malaria-low-transmission-areas-of-kenya-2014
#17
Fredrick Odhiambo, Ann M Buff, Collins Moranga, Caroline M Moseti, Jesca Okwara Wesongah, Sara A Lowther, Wences Arvelo, Tura Galgalo, Thomas O Achia, Zeinab G Roka, Waqo Boru, Lily Chepkurui, Bernhards Ogutu, Elizabeth Wanja
BACKGROUND: Malaria accounts for ~21% of outpatient visits annually in Kenya; prompt and accurate malaria diagnosis is critical to ensure proper treatment. In 2013, formal malaria microscopy refresher training for microscopists and a pilot quality-assurance (QA) programme for malaria diagnostics were independently implemented to improve malaria microscopy diagnosis in malaria low-transmission areas of Kenya. A study was conducted to identify factors associated with malaria microscopy performance in the same areas...
September 13, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28902615/irregular-analytical-errors-in-diagnostic-testing-a-novel-concept
#18
Michael Vogeser, Christoph Seger
BACKGROUND: In laboratory medicine, routine periodic analyses for internal and external quality control measurements interpreted by statistical methods are mandatory for batch clearance. Data analysis of these process-oriented measurements allows for insight into random analytical variation and systematic calibration bias over time. However, in such a setting, any individual sample is not under individual quality control. The quality control measurements act only at the batch level. Quantitative or qualitative data derived for many effects and interferences associated with an individual diagnostic sample can compromise any analyte...
September 13, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28902614/can-a-combination-of-average-of-normals-and-real-time-external-quality-assurance-replace-internal-quality-control
#19
Tony Badrick, Peter Graham
Internal Quality Control and External Quality Assurance are separate but related processes that have developed independently in laboratory medicine over many years. They have different sample frequencies, statistical interpretations and immediacy. Both processes have evolved absorbing new understandings of the concept of laboratory error, sample material matrix and assay capability. However, we do not believe at the coalface that either process has led to much improvement in patient outcomes recently. It is the increasing reliability and automation of analytical platforms along with improved stability of reagents that has reduced systematic and random error, which in turn has minimised the risk of running less frequent IQC...
September 13, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28898967/systematic-review-lost-time-injuries-in-the-us-mining-industry
#20
B Nowrouzi-Kia, B Sharma, C Dignard, Z Kerekes, J Dumond, A Li, M Larivière
Background: The mining industry is associated with high levels of accidents, injuries and illnesses. Lost-time injuries are useful measures of health and safety in mines, and the effectiveness of its safety programmes. Aims: To identify the type of lost-time injuries in the US mining workforce and to examine predictors of these occupational injuries. Methods: Primary papers on lost-time injuries in the US mining sector were identified through a literature search in eight health, geology and mining databases, using a systematic review protocol tailored to each database...
August 1, 2017: Occupational Medicine
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