80 results on '"Jarrah J"'
Search Results
2. Solidification processing of Al-Al2O3 composite using turbine stirrer
- Author
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Al-Jarrah, J. A., Ray, S., and Ghosh, P. K.
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- 1998
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3. P.878 Point of care testing for clozapine
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Salamone, S., primary, Sumanth, A., additional, Kozo, D., additional, Siegfried, N., additional, Gill, R., additional, Courtney, J., additional, Hilaire, M.R., additional, Harney, R., additional, Jarrah, J., additional, DiStefano, K., additional, and Baburina, I., additional
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- 2019
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4. Novel point of care testing device for rapid measurement of clozapine in whole blood
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Sumanth, A., primary, Kozo, D., additional, Courtney, J., additional, Siegfried, N., additional, Gill, R., additional, Hilaire, M.R., additional, Venkateswaran, A., additional, Harney, R., additional, Jarrah, J., additional, Distefano, K., additional, Salamone, S., additional, and Baburina, I., additional
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- 2019
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5. Factors Associated with Unplanned Transfers from the General Medicine Floor to the Medical Intensive Care Unit Within 24 Hours of Emergency Department Admission
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Jarrah, J., primary, Radaideh, Q., additional, Karim, A., additional, Ríos-Bedoya, C., additional, and Bachuwa, G., additional
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- 2019
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6. Manufacturing of Gray Cast Iron Automotive Disc Brake
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Al-Jarrah J. A Al-Jarrah J. A, I M I M Masoud Masoud, and Abu Mansour T Abu Mansour T
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Materials science ,business.industry ,law ,Metallurgy ,engineering ,Automotive industry ,Disc brake ,Cast iron ,engineering.material ,business ,Gray (horse) ,law.invention - Published
- 2011
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7. Increasing of the Mechanical Properties of Friction Stir Welded Joints of 6061 Aluminum Alloy by Introducing Alumina Particles
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Tashkandi, M. A., primary, Al-Jarrah, J. A., additional, and Ibrahim, M., additional
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- 2017
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8. Experimental Study of an Air Lift Pump
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Abou Taleb, F. S., primary and Al-jarrah, J. A., additional
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- 2017
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9. Spot Welding of 6061 Aluminum Alloy by Friction Stir Spot Welding Process
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Tashkandi, M. A., primary, Al-jarrah, J. A., additional, and Ibrahim, M., additional
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- 2017
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10. Effect of Applied Pressure on the Mechanical Properties of 6061 Aluminum Alloy Welded Joints Prepared by Friction Stir Welding
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Al-jarrah, J. A., primary, Ibrahim, A., additional, and Sawlaha, S., additional
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- 2017
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11. Behavior of triplex steel containing different aluminum content
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Masoud, M. I., primary, Tashkandi, M., additional, Al-Jarrah, J., additional, and Farahat, A. I. Z., additional
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- 2017
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12. Effect of Aluminum Content on Wear Resistance of Hot-Forged Multiphase Steel
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Mohamed, Masoud Ibrahim, primary, Farahat, Ahmed Ismail Zaky, additional, and Al-Jarrah, J. A., additional
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- 2016
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13. Effect of Friction Stir Welding Processing Parameters on Abrasion Wear Resistance of AA5083 Welded Joints
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Badran, O., primary, Al-Kloub, N., additional, Hassan, A. Mahmood, additional, Al-Jarrah, J. Abdullah, additional, and Khrais, S. Khaled, additional
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- 2011
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14. CARBON MASS TRANSFER INTO COMPOSITE SLABS UNDER THE EFFECT OF NON-FICKIAN DIFFUSION MODEL
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Khadrawi, A. F., primary, Al-Jarrah, J., additional, and Al-Nimr, M. A., additional
- Published
- 2007
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15. CARBON MASS TRANSFER INTO COMPOSITE SLABS UNDER THE EFFECT OF NON-FICKIAN DIFFUSION MODEL.
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Khadrawi, A. F., Al-Jarrah, J., and Al-Nimr, M. A.
- Subjects
- *
MASS transfer , *LAPLACE transformation , *OPERATIONAL calculus , *DIFFERENTIAL equations , *SOLUTION (Chemistry) , *THERMODYNAMICS - Abstract
Mechanisms of mass transfer into composite thin slabs consisting of two thin metal layers in perfect contact using the hyperbolic mass conduction model have been studied. The non-Fickian phenomena are analyzed by comparison of the solutions between Fickian and non-Fickian equations. The effects of diffusion ratio of carbon, density ratio, and thermal relaxation time on the spatial and transient behavior of the composite slabs are investigated semi-analytically using the Laplace transformation technique. [ABSTRACT FROM AUTHOR]
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- 2008
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16. Strategies for unsupervised multimedia processing: self-organizing trees and forests.
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Kyan, M., Jarrah, J., Muneesawang, P., and Ling Guan
- Abstract
In this article, we explore a new family of neural network architectures that have a basis in self-organization, yet are somewhat free from many of the constraints typical of other well-known self-organizing architectures. Within this family, the basic processing unit is known as the self-organizing tree map (SOTM). We will look at how this model has evolved since its inception in 1995, how it has inspired new models, and how it is being applied to complex multimedia research problems in digital asset management and microbiological image analysis [ABSTRACT FROM PUBLISHER]
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- 2006
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17. Solidification processing of Al-Al2O3composite using turbine stirrer
- Author
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Al-Jarrah, J. A., Ray, S., and Ghosh, P. K.
- Abstract
Solidification processing of Al-Al2O3composites involves mixing of nonwetting alumina particles in molten aluminum alloy resulting in a slurry where the particles are often attached to bubbles sucked at the center of vortex below the stirrer. The internal surface of bubbles is eventually oxidized by oxygen from air entrapped in it. These bubble-particle combines may float or settle during casting depending on the overall density influencing the particle and porosity distribution in a cast composite ingot where the performance of a stirrer may be evaluated under a given condition of processing. Particle incorporation is more for turbine stirrers instead of flat blade stirrers, but the porosity also increases. Flotation of bubble-particle combines during casting of ingot results in higher particle content at the top. Microstructure shows clusters of particles along circular boundaries of thin oxides at the top of the ingot and sometimes at the bottom. This may be a consequence of filling of bubbles to different extents by surrounding liquid puncturing the oxide layer, if necessary, during solidification. When the manner of stirring is changed to 2 minutes of stirring of particles into molten alloy with an intermediate 2-minute period of no stirring before stirring the slurry again for 2 minutes, relatively uniform particle incorporation results along the height of cast ingot compared to that obtained by continuous stirring. This difference in particle distribution may be attributed to flotation of bubble-particle combines to release the particles on the top of the slurry when stirring ceases and its remixing into the slurry when it is stirred again. However, an increase in the intermediate period of no stirring and a higher processing temperature result in enhanced porosity and a more inhomogeneous particle distribution along the height of the ingot.
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- 1998
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18. Radiologic myosteatosis predicts major complication risk following esophagectomy for cancer: a multicenter experience.
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Park JS, Colby M, Spencer J, Bhimani N, Leibman S, Laurence JM, Smith G, Falk GL, and Sandroussi C
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- Humans, Male, Aged, Retrospective Studies, Female, Middle Aged, Australia epidemiology, Disease-Free Survival, Survival Rate trends, Sarcopenia diagnostic imaging, Sarcopenia complications, Risk Factors, Esophagectomy adverse effects, Esophageal Neoplasms surgery, Esophageal Neoplasms mortality, Postoperative Complications epidemiology, Postoperative Complications etiology, Postoperative Complications diagnostic imaging, Tomography, X-Ray Computed, Muscle, Skeletal diagnostic imaging
- Abstract
Background: Myosteatosis is a measure of skeletal muscle quality that is readily identifiable on computed tomography (CT). The effect of preoperative myosteatosis on outcomes after radical esophagectomy remains unclear. This study aimed to correlate the presence of myosteatosis on CT scan with perioperative morbidity, mortality, and survival outcomes after esophagectomy in an Australian population across 3 esophageal cancer centers., Methods: A retrospective analysis was performed for all patients undergoing radical esophagectomy for cancer across 3 centers. Radiologic assessment of preoperative CT images was performed to determine the presence of myosteatosis. The outcomes measured included perioperative complication rate, overall survival (OS), and disease-free survival (DFS)., Results: A total of 462 patients were included in the analysis (male patients, 78.4%; median age, 67 years). Moreover, 353 patients (76.4%) had myosteatosis on CT. Compared to patients with normal skeletal muscle attenuation, patients with myosteatosis had a higher rate of major (Clavien-Dindo grade ≥ IIIb) complication (14.7% vs 24.9%, respectively; P = .026) and a higher rate of 30-day mortality (0.0% vs 4.0%, respectively; P = .048). Myosteatosis was associated with a major complication on multivariate analysis (hazard ratio, 1.906; 95% CI, 1.057-3.437; P = .032). There was no difference in OS and DFS between patients with and without myosteatosis (OS: 59 vs 56 months, respectively [P = .465]; DFS: 39 vs 42 months, respectively; P = .172)., Conclusion: The presence of myosteatosis on radiologic imaging was associated with an increased risk of major complications and 30-day mortality. Identifying myosteatosis can be an adjunct to preoperative nutritional assessment and prognostication, facilitating early recognition of patients at risk of complications., Competing Interests: Declaration of competing interest The authors declare no competing interests., (Crown Copyright © 2024. Published by Elsevier Inc. All rights reserved.)
- Published
- 2024
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19. General Factors That Reduce Cardiovascular Risk in People With Schizophrenia: A Systematic Review.
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Al-Kayed J and Okoli CC
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- Humans, Heart Disease Risk Factors, Antipsychotic Agents therapeutic use, Antipsychotic Agents adverse effects, Risk Factors, Schizophrenia complications, Cardiovascular Diseases prevention & control, Cardiovascular Diseases etiology
- Abstract
Background: The life expectancy of individuals with schizophrenia in the United States is 20% shorter than that of the general population owing to cardiovascular disease (CVD). It is crucial to identify the factors that reduce CVD risk in these individuals., Objective: In this systematic review, we examined the factors associated with CVD in people with schizophrenia., Methods: We searched 3 electronic databases for English articles published before April 2023. Investigators assessed the factors associated with 2 cardiovascular health outcomes among people with schizophrenia: the 10-year coronary heart disease (CHD)/CVD risk and peak oxygen uptake (VO 2Peak/max )., Results: We retrieved 17 studies from the search. Investigators examined factors affecting 10-year CHD/CVD risk in 11 studies and VO 2Peak/max in 6 studies among people with schizophrenia. We found that individuals who had low metabolic symptoms (ie, hypertension and hyperglycemia), did not smoke, engaged in continuous CVD risk assessments, had a shorter duration of the diagnosis and hospitalization, and were of normal weight had a lower 10-year CHD/CVD risk. Furthermore, individuals who engaged in specific physical activity had a higher VO 2Peak/max . Finally, those taking antipsychotic medications had a higher 10-year CHD/CVD risk and a lower VO 2Peak/max ., Conclusions: The CVD risk factors observed in the general population are common among people with schizophrenia. When these risk factors are controlled, the 10-year CHD/CVD risk and VO 2Peak/max of these individuals may be improved. Given the elevated CVD risk associated with antipsychotic medications, future researchers should examine modifying CVD risk factors to mitigate the additional risks associated with medication use in this population., Competing Interests: The authors have no funding or conflicts of interest to disclose., (Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.)
- Published
- 2024
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20. Social and environmental transmission spread different sets of gut microbes in wild mice.
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Raulo A, Bürkner PC, Finerty GE, Dale J, Hanski E, English HM, Lamberth C, Firth JA, Coulson T, and Knowles SCL
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- Animals, RNA, Ribosomal, 16S analysis, Murinae microbiology, Social Behavior, Bacteria classification, Bacteria genetics, Bacteria isolation & purification, Male, Female, Mice, Gastrointestinal Microbiome
- Abstract
Gut microbes shape many aspects of organismal biology, yet how these key bacteria transmit among hosts in natural populations remains poorly understood. Recent work in mammals has emphasized either transmission through social contacts or indirect transmission through environmental contact, but the relative importance of different routes has not been directly assessed. Here we used a novel radio-frequency identification-based tracking system to collect long-term high-resolution data on social relationships, space use and microhabitat in a wild population of mice (Apodemus sylvaticus), while regularly characterizing their gut microbiota with 16S ribosomal RNA profiling. Through probabilistic modelling of the resulting data, we identify positive and statistically distinct signals of social and environmental transmission, captured by social networks and overlap in home ranges, respectively. Strikingly, microorganisms with distinct biological attributes drove these different transmission signals. While the social network effect on microbiota was driven by anaerobic bacteria, the effect of shared space was most influenced by aerotolerant spore-forming bacteria. These findings support the prediction that social contact is important for the transfer of microorganisms with low oxygen tolerance, while those that can tolerate oxygen or form spores may be able to transmit indirectly through the environment. Overall, these results suggest social and environmental transmission routes can spread biologically distinct members of the mammalian gut microbiota., (© 2024. The Author(s).)
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- 2024
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21. Sleep and fatigue management strategies: How nurses, midwives and paramedics cope with their shift work schedules-a qualitative study.
- Author
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Booker LA, Fitzgerald J, Mills J, Bish M, Spong J, Deacon-Crouch M, and Skinner TC
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- Humans, Pregnancy, Female, Paramedics, Sleep, Sleep Deprivation, Fatigue, Shift Work Schedule, Midwifery
- Abstract
Aims: To understand the benefits and challenges of shift work, and the coping strategies used by nurses, midwives and paramedics to manage the impact of shift work on sleep and fatigue from shift work., Design: A single case study with embedded units., Methods: Twenty-seven participants were interviewed exploring their shift work experiences, coping strategies used to improve sleep, and what their recommendations are for improving shift work management. Interviews were completed between November and December 2022., Results: Participants enjoyed the lifestyle, flexibility and financial rewards offered by working shift work. However, fatigue and sleep deprivation undermined these benefits, as it impacted their ability to enjoy social and family events. There were also concerns of long-term health consequences of shift work and delivery of care. Changes to rostering practices and sleep and shift work education were common recommendations., Conclusion: This study provides insights on how healthcare professionals manage sleep and fatigue due to shift work and the inadequate support. There is absence of adequate policies, processes and training at an organizational, academic and personal level on how to best manage sleep and fatigue when working shift work. Future research is needed to explore how to equip healthcare shift workers with the skills to successfully manage their schedules to mitigate the negative impact that poor sleep and fatigue has on the health and safety of themselves and their patients., Implications for the Profession And/or Patient Care: Understanding the specific challenges of shift work and how workers manage their shift work schedules is critical for improving the health and safety of themselves and their patients. This study identified that there is insufficient training regarding sleep and shift work management strategies, potentially leading to occupational health and safety concerns. Further education and training to equip staff with the necessary information, training and guidance to staff on how to reduce fatigue risk is required., Patient or Public Contribution: This study involved healthcare shift workers in semi-structured interviews. Data gathered from a previous survey that participants were involved in helped shape the interview topics and the study design., (© 2024 The Authors. Nursing Open published by John Wiley & Sons Ltd.)
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- 2024
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22. Lessons from the field: Supporting infection prevention and control and antimicrobial stewardship in Amman, Jordan.
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Shallal A, Jarrah J, Prentiss T, Suleyman G, Veve MP, Banat A, Zervos J, Mousa AB, Msadeh L, Zerriouh Thneibat FM, Zervos M, Al-Raiby J, Alsawalha L, and Zayed B
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- Humans, Anti-Bacterial Agents therapeutic use, Jordan, Infection Control, Antimicrobial Stewardship, Anti-Infective Agents
- Abstract
Background: To reduce antimicrobial resistance (AMR), appropriate antimicrobial prescribing is critical. In conjunction with Infection Prevention & Control (IPC) programs, Antimicrobial Stewardship Programs (ASP) have been shown to improve prescribing practices and patient outcomes. Low- and middle-income countries (LMIC) face challenges related to inadequate ASP policies and guidelines at both the national and healthcare facility (HCF) levels., Methods: To address this challenge, the World Health Organization (WHO) created a policy guidance and practical toolkit for implementation of ASPs in LMIC. We utilized this document to support a situational analysis and two-day ASP-focused workshop. In follow-up, we invited these attendees, additional HCF and hospital directors to attend a workshop focused on the benefits of supporting these programs., Results: Over the course of a total three days, we recruited hospital directors, ASP team members, and IPC officers from fifteen different healthcare facilities in Jordan. We describe the courses and coordination, feedback from participants, and lessons learned for future implementation., Conclusions: Future efforts will include more time for panel-type discussion. which will assist in further delineating enablers and barriers. Also planned is a total three-day workshop; with the first two days being with ASP/IPC teams, and the final third day being with hospital directors and leadership. The WHO policy guidance and toolkit are useful tools to address overuse of antimicrobial agents. Strong leadership support is needed for successful implementation of ASP and IPC. Discussions on quality/safety, as well as cost analyses, are important to generate interest of stakeholders., Competing Interests: Declaration of Competing Interest The authors have no conflict of interest to declare., (Copyright © 2023 The Author(s). Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2023
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23. Isolated cardiac muscle contracting against a real-time model of systemic and pulmonary cardiovascular loads.
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Garrett AS, Dowrick J, Taberner AJ, and Han JC
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- Rats, Animals, Heart Ventricles, Hemodynamics, Hot Temperature, Myocardial Contraction physiology, Myocardium, Heart physiology
- Abstract
Isolated cardiac tissues allow a direct assessment of cardiac muscle function and enable precise control of experimental loading conditions. However, current experimental methods do not expose isolated tissues to the same contraction pattern and cardiovascular loads naturally experienced by the heart. In this study, we implement a computational model of systemic-pulmonary impedance that is solved in real time and imposed on contracting isolated rat muscle tissues. This systemic-pulmonary model represents the cardiovascular system as a lumped-parameter, closed-loop circuit. The tissues performed force-length work-loop contractions where the model output informed both the shortening and restretch phases of each work-loop. We compared the muscle mechanics and energetics associated with work-loops driven by the systemic-pulmonary model with that of a model-based loading method that only accounts for shortening. We obtained results that show simultaneous changes of afterload and preload or end-diastolic length of the muscle, as compared with the static, user-defined preload as in the conventional loading method. This feature allows assessment of muscle work output, heat output, and efficiency of contraction as functions of end-diastolic length. The results reveal the behavior of cardiac muscle as a pump source to achieve load-dependent work and efficiency outputs over a wider range of loads. This study offers potential applications of the model to investigate cardiac muscle response to hemodynamic coupling between systemic and pulmonary circulations in an in vitro setting. NEW & NOTEWORTHY We present the use of a "closed-loop" model of systemic and pulmonary circulations to apply, for the first time, real-time model-calculated preload and afterload to isolated cardiac muscle preparations. This method extends current experimental protocols where only afterload has been considered. The extension to include preload provides the opportunity to investigate ventricular muscle response to hemodynamic coupling and as a pump source across a wider range of cardiovascular loads.
- Published
- 2023
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24. A unique case of a fulminant clonal CD8-positive T-cell lymphoproliferative disorder with CNS involvement.
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Mesbah-Oskui L, Alabkal J, Alduaij W, and Dhawan PS
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- Male, Humans, Aged, Herpesvirus 4, Human, CD8-Positive T-Lymphocytes, Epstein-Barr Virus Infections, Central Nervous System Neoplasms, Lymphoproliferative Disorders, Neoplasms, Second Primary
- Abstract
Background: This is a unique case that describes the presentation, investigations, and disease trajectory of a fatal, clonal CD8-positive T-cell lymphoproliferative disorder in an otherwise healthy and immunocompetent patient with Epstein-Barr virus seronegative status. Central nervous system involving T-cell lymphoproliferative disorders are rare and typically encountered in the setting of immunocompromise. These disorders are often associated with aggressive cytomorphological features and characteristic magnetic resonance imaging patterns, which were not seen in this case., Case Presentation: Here we describe a case of a 65 year-old male presenting with neuropsychiatric symptoms, truncal ataxia, and falls who's bone marrow, cerebrospinal fluid, and brain biopsy were consistent with a clonal CD8-positive T-cell lymphoproliferative disorder that did not meet existing World Health Organization criteria for classification as T-cell lymphoma. The patient was treated with intrathecal methotrexate resulting in transient improvement of his symptoms followed by disease progression and death related to aspiration., Conclusions: This case highlights the importance of urgent and comprehensive work-up in patients with clinical features suggestive of lymphoma with central nervous system involvement, despite atypical imaging features and lack of cytomorphological features satisfying current World Health Organization classification criteria., (© 2023. BioMed Central Ltd., part of Springer Nature.)
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- 2023
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25. The utility of surveillance CT scans in a cohort of survivors of colorectal cancer.
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Braden J, Blinman P, Malalasekera A, Kerin-Ayres K, Spencer J, Southi N, and Vardy JL
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- Humans, Retrospective Studies, Carcinoembryonic Antigen, Neoplasm Recurrence, Local diagnostic imaging, Tomography, X-Ray Computed, Survivors, Cancer Survivors, Colorectal Neoplasms
- Abstract
Purpose: Colorectal cancer (CRC) is the third most common cancer worldwide. After curative intent treatment, international guidelines recommend surveillance protocols which include annual CT chest, abdomen and pelvis (CAP) and serum carcinoembryonic antigen (CEA) monitoring which aim to improve overall survival by early detection of recurrence. Despite the widespread recommendations, robust evidence of an overall survival benefit is lacking. Our study aimed to quantify the utility of annual CT CAP as a surveillance modality in comparison to the rate of potentially harmful false-positive and incidental findings., Methods: High-risk stage II and stage III CRC patients were retrospectively identified from the Sydney Cancer Survivorship Centre database. Findings on surveillance CT were classified into confirmed recurrence or the potentially harmful findings of (a) false-positive or (b) clinically significant incidental finding., Results: A total of 376 surveillance CT CAPs were performed in 174 survivors between 12 September 2013 and 30 June 2020. The recurrence rate during the study period was 23/174 (13.2%) with the majority of recurrences detected by abnormal CEA (14/23, 60.9%) versus surveillance CT (4/23, 17.4%), with the remainder identified on non-surveillance CT (5/23, 21.7%). Curative intent surgery was performed in 12/23 people with CRC recurrence. Surveillance CT was shown to result in high levels of false-positive (31/174, 17.8% of patients) or clinically significant incidental findings (30/174, 17.2% of patients). The risk of identifying these potentially harmful findings was ongoing with each year of surveillance CT., Conclusion: Surveillance CT was associated with low detection rates and high rates of potentially harmful findings bringing this surveillance modality under further scrutiny., Implications for Cancer Survivors: An increased emphasis should be placed on educating survivors on the benefits of surveillance CT weighed against the risk of potentially harmful findings., (© 2021. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
- Published
- 2023
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26. Anaesthesia by intravenous propofol reduces the incidence of intra-operative gastric electrical slow-wave dysrhythmias compared to isoflurane.
- Author
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Aghababaie Z, Wang TH, Nisbet LA, Matthee A, Dowrick J, Sands GB, Paskaranandavadivel N, Cheng LK, O'Grady G, and Angeli-Gordon TR
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- Female, Animals, Swine, Postoperative Nausea and Vomiting, Incidence, Anesthetics, Intravenous pharmacology, Anesthesia, General adverse effects, Propofol pharmacology, Isoflurane adverse effects, Anesthetics, Inhalation pharmacology
- Abstract
Gastric motility is coordinated by bioelectrical slow-wave activity, and abnormal electrical dysrhythmias have been associated with nausea and vomiting. Studies have often been conducted under general anaesthesia, while the impact of general anaesthesia on slow-wave activity has not been studied. Clinical studies have shown that propofol anaesthesia reduces postoperative nausea and vomiting (PONV) compared with isoflurane, while the underlying mechanisms remain unclear. In this study, we investigated the effects of two anaesthetic drugs, intravenous (IV) propofol and volatile isoflurane, on slow-wave activity. In vivo experiments were performed in female weaner pigs (n = 24). Zolazepam and tiletamine were used to induce general anaesthesia, which was maintained using either IV propofol (n = 12) or isoflurane (n = 12). High-resolution electrical mapping of slow-wave activity was performed. Slow-wave dysrhythmias occurred less often in the propofol group, both in the duration of the recorded period that was dysrhythmic (propofol 14 ± 26%, isoflurane 43 ± 39%, P = 0.043 (Mann-Whitney U test)), and in a case-by-case basis (propofol 3/12, isoflurane 8/12, P = 0.015 (Chi-squared test)). Slow-wave amplitude was similar, while velocity and frequency were higher in the propofol group than the isoflurane group (P < 0.001 (Student's t-test)). This study presents a potential physiological biomarker linked to recent observations of reduced PONV with IV propofol. The results suggest that propofol is a more suitable anaesthetic for studying slow-wave patterns in vivo., (© 2023. The Author(s).)
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- 2023
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27. Can we improve the usefulness of the diuretic renogram in the diagnosis of ureteropelvic junction obstruction (UPJO) in children? Introduction of mercaptoacetyltriglycine-suspected obstruction scoring system (MAG-SOS).
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Hodhod A, Fermin-Risso C, Farhad M, Cook AJ, Aburezq J, Eid H, and Weber BA
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- Humans, Child, Female, Pregnancy, Infant, Kidney Pelvis diagnostic imaging, Kidney Pelvis surgery, Retrospective Studies, Diuretics, Urologic Surgical Procedures, Canada, Treatment Outcome, Ureteral Obstruction diagnostic imaging, Ureteral Obstruction surgery, Hydronephrosis diagnostic imaging, Hydronephrosis surgery
- Abstract
Introduction: Mercaptoacetyltriglycine (MAG-3) renogram is one of the gold standard diagnostic tools of ureteropelvic junction obstruction (UPJO); however, there is no widely agreed indications of pyeloplasty based on MAG-3 findings. In this study, we introduce a renogram scoring system that can help improve the prognostic value of MAG-3 renogram and in the decision making of pyeloplasty., Patients and Methods: We retrospectively reviewed consecutive pyeloplasties for antenatal hydronephrosis from 2010 to 2020. A control group was included of non-operatively managed SFU grade 3 and 4. The initial renal ultrasound and preoperative MAG-3 Lasix renogram were reviewed for differential renal function (DRF), type of renogram curve and tracer washout half-time (T
1/2 ). A ROC curve was used to evaluate the cut-off points that can be associated with obstruction. A multivariate linear regression model was used to assess the best renogram parameter that can predict surgical intervention., Results: We included 188 patients with 209 renal units. The median age for pyeloplasty was 5.4 months. The mercaptoacetyltriglycine-Suspected Obstruction Scoring System (MAG-SOS) was associated with pyeloplasty (AUC = 0.97, P < 0.001) (Figure A). A score of 5 is 100% specific for obstruction. 78% of units required surgical intervention had a MAG-SOS score of≥5 while all units of the control group had a range of score 0-4. Using the multivariate analysis, the MAG-SOS system showed to the only independent predictor for pyeloplasty (HR = 0.03, p < 0.001)., Discussion: This study has some limitations. Firstly, the retrospective nature of the cohort; however, all patients were reviewed by one investigator who was blinded to the line of management. This is a single institutional study; therefor, this MAG-SOS should be evaluated by other centers to ensure its efficiency. Lastly, the pyeloplasty decision was taken by 3 different urologists; nevertheless, all of them adopt the same indications which are similar to those of the Society for Pediatric Urology and the Canadian Urological Association guidelines., Conclusion: The MAG-SOS system showed to be a useful tool that can predict pyeloplasty. A score of 5 has 100% specificity for patients having a pyeloplasty performed. Prospective studies are required to confirm the usefulness of this novel tool., (Copyright © 2023 Journal of Pediatric Urology Company. Published by Elsevier Ltd. All rights reserved.)- Published
- 2023
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28. Impacts of Myrtle Rust Induced Tree Mortality on Species and Functional Richness within Seedling Communities of a Wet Sclerophyll Forest in Eastern Australia.
- Author
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Stevenson K, Pegg G, Wills J, Herbohn J, and Firn J
- Abstract
Austropuccinia psidii is an introduced plant pathogen known to have caused significant declines in populations of several Australian native Myrtaceae species. However, limited research has focused on the impacts of the pathogen on plant communities in the aftermath of its invasion. This study investigated the relationship between disease impact level, plant species diversity, and functional richness in seedling communities in a wet sclerophyll forest in southeast Queensland. A clear shift was found from early colonizer Myrtaceae species in the mid- and understory to a more diverse non-Myrtaceae seedling community indicative of secondary succession. Comparisons of key Myrtaceae species and the seedling community suggest that there may also be a shift towards species that produce drupes and larger seeds, and overall, a current reduction in fruit availability due to the dramatic loss of previously dominant species. Seedling diversity showed no significant correlation with tree mortality, possibly due to favorable rainfall conditions during the study period. The more subtle changes in forest composition, such as changes in fruit type and availability due to myrtle rust, however, could affect the visitation of local bird species in the short term and certainly reduce the store of early colonizing native shrub and tree species.
- Published
- 2023
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29. Intraoperative arthrography favorably impacts the early outcome of operatively managed fractures of the lateral humeral condyle displaced 1-5 mm in children.
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Lari A, Alenezi A, Abughaith J, AlShehawy H, Hammady W, and AlSaifi S
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- Humans, Child, Arthrography, Prospective Studies, Retrospective Studies, Humerus, Fracture Fixation, Internal methods, Treatment Outcome, Humeral Fractures diagnostic imaging, Humeral Fractures surgery, Joint Diseases
- Abstract
Background: Controversy exists surrounding the optimal approach to managing pediatric lateral humeral condyle fractures (LHCF). The difficulty in assessing the articular surface using radiography and the intra-articular element potentially involved make LHCF susceptible to complications and delayed diagnoses. Arthrography has been used to delineate the articular surface to aid in deciding whether closed or open reduction is necessary. However, there has been scarce evidence to determine the accuracy of using radiography versus arthrography to predict articular disruption in LHCF displaced 1-5 mm. This study assesses; (1) the utility of intraoperative arthrography in modifying the method of operative reduction, (2) the accuracy of plain radiography in identifying articular integrity, and (3) the clinical outcomes of early operative treatment., Methods: This was a single-center prospective study that involved operatively treated pediatric LHCF with a displacement of 1-5 mm. Patient demographics, radiographic displacement, predicted radiographic articular integrity, articular integrity on arthrograms, modification of management and follow-up clinical outcomes were obtained., Results: A total of 72 patients were included with a mean displacement of 2.6 mm and a mean follow-up of 16 months. The articular surface was disrupted in 21% of patients. The reduction method (open versus closed) was modified in 15 patients (21%) after an intraoperative arthrogram. Out of 25 patients with displacement < 2 mm, four of which (15%) had disrupted articular surface and were subsequently treated with open reduction internal fixation (ORIF). While eleven patients with > 4 mm displacement had an intact articular hinge that were managed with closed reduction and percutaneous pinning (CRPP). All patients achieved union with no documented major complications. The ability of radiography to discriminate between disrupted/ intact articular integrity decreases as displacement decreases., Conclusions: Data from this study suggest using the degree of displacement measured on plain radiography is insufficient in predicting articular integrity for fractures displaced 1-5 mm. The use of arthrography guides reduction method and adequacy, avoiding scenarios of unnecessary open reduction and insufficient closed reduction. Further, a significant amount of outliers exist that have intact articular hinges above 4 mm and disrupted hinges below 2 mm of displacement. Finally we report favorable outcomes using a lower threshold for early operative treatment., (© 2022. The Author(s).)
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- 2022
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30. Long-term cardiac surveillance and outcomes of COVID-19 patients.
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Mitrani RD, Dabas N, Alfadhli J, Lowery MH, Best TM, Hare JM, Myerburg RJ, and Goldberger JJ
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- Humans, COVID-19 Vaccines, Arrhythmias, Cardiac diagnosis, Arrhythmias, Cardiac epidemiology, Arrhythmias, Cardiac therapy, Athletes, Myocarditis diagnosis, Myocarditis epidemiology, COVID-19 epidemiology
- Abstract
Acute cardiac manifestions of COVID-19 have been well described, while chronic cardiac sequelae remain less clear. Various studies have shown conflicting data on the prevalence of new or worsening cardiovascular disease, myocarditis or cardiac dysrhythmias among patients recovered from COVID-19. Data are emerging that show that patients recovering from COVID-19 have an increased incidence of myocarditis and arrhythmias after recovery from COVID-19 compared with the control groups without COVID-19. The incidence of myocarditis after COVID-19 infection is low but is still significantly greater than the incidence of myocarditis from a COVID-19 vaccine. There have been several studies of athletes who underwent a variety of screening protocols prior to being cleared to return to exercise and competition. The data show possible, probable or definite myocarditis or cardiac injury among 0.4-3.0% of the athletes studied. Recent consensus statements suggest that athletes with full recovery and absence of cardiopulmonary symptoms may return to exercise and competition without cardiovascular testing. In conclusion, patients with COVID-19 may be expected to have an increased risk of cardiovascular disease, myocarditis or arrhythmias during the convalescent phase. Fortunately, the majority of patients, including athletes may return to their normal activity after recovery from COVID 19, in the absence of persisting cardiovascular symptoms., (Copyright © 2022. Published by Elsevier Inc.)
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- 2022
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31. The Association between Admission Procalcitonin Level and The Severity of COVID-19 Pneumonia: A Retrospective Cohort Study.
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Aon M, Alsaeedi A, Alzafiri A, Ibrahim MM, Al-Shammari A, Al-Shammari O, Tawakul M, Taha S, Alherz N, Alshammari J, Albazee E, Alharbi T, Alshammari D, Alenezi Z, Alenezi M, Aldouseri S, Eyadah M, Aldhafeeri M, and Aoun AH
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- Female, Humans, Middle Aged, Male, Procalcitonin, SARS-CoV-2, Retrospective Studies, Intensive Care Units, COVID-19, Pneumonia
- Abstract
Background and Objectives: An elevated procalcitonin level has classically been linked to bacterial infections. Data on the association between elevated procalcitonin and the outcome of coronavirus disease 2019 (COVID-19) are conflicting. Some linked it to associated bacterial co-infections, while others correlated the elevation with disease severity without coexisting bacterial infections. We aimed to investigate the association between high procalcitonin and the severity of COVID-19. Materials and Methods: Hospitalized patients with confirmed COVID-19 pneumonia were divided into two groups: the normal-procalcitonin group and the high-procalcitonin group (>0.05 ng/mL). Patients with concomitant bacterial infections on admission were excluded. The primary outcomes were the need for intensive care unit (ICU) admission, progression to invasive mechanical ventilation (IMV), and in-hospital 28-day mortality. Results: We included 260 patients in the normal procalcitonin group and 397 patients in the high procalcitonin group. The mean age was 55 years and 49% were females. A higher number of patients in the elevated procalcitonin group required ICU admission (32.7% vs. 16.2%, p < 0.001) and IMV (27.2% vs. 13.5%, p < 0.001). In-hospital mortality was significantly higher in the elevated procalcitonin group (18.9% vs. 8.5%, p < 0.001). After adjusting for other covariates, procalcitonin > 0.05 ng/mL was an independent predictor of progression to IMV (OR, 1.71; 95% CI, 1.08−2.71; p = 0.022), ICU admission (OR, 1.73; 95% CI, 1.13−2.66; p = 0.011), and in-hospital mortality (OR, 1.99; 95% CI, 1.14−3.47; p = 0.015). An elevated procalcitonin level was the strongest predictor of in-hospital mortality. Conclusions: Measurement of procalcitonin can have a prognostic role among COVID-19 patients. The admission procalcitonin level can identify patients at risk of ICU admission, progression to IMV, and in-hospital mortality., Competing Interests: The authors declare no conflicts of interest.
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- 2022
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32. Effect of dental trauma management resources on dental practitioners' confidence and knowledge: A pilot cross-sectional study.
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Matoug-Elwerfelli M, Sim YF, Alghutaimel H, Almohareb R, Al-Abdulla J, Al-Kandari J, Shahda M, El Shahawy O, Bacho R, Al Harrasi S, Twati W, Duggal M, Nazzal H, and Tong HJ
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- Cross-Sectional Studies, Humans, Professional Role, Saudi Arabia, Surveys and Questionnaires, Dentists, Tooth Injuries therapy
- Abstract
Background/aim: The knowledge of standardized care guidelines is critical to the confidence of practitioners in managing dental trauma. Therefore, the aim of this study was to assess the awareness, use and impact of the International Association of Dental Traumatology guidelines, and the online Dental Trauma Guide on general dental practitioners' self-reported confidence and knowledge in managing traumatic dental injuries in the primary and permanent dentitions., Materials and Methods: A cross-sectional, pre-piloted, 27-item self-administered questionnaire survey was distributed electronically to general dental practitioners' working within five member states of the Gulf Cooperation Council countries (Kingdom of Bahrain, Kingdom of Saudi Arabia, Kuwait, Oman, and Qatar) between September and December 2020. Data were collected and analysed using descriptive statistics and Wilcoxon Signed Rank test analysis for relevant comparisons., Results: A total of 294 respondents completed the survey, with the majority being from the Kingdom of Saudi Arabia (47.4%) and Qatar (27.3%). A lack of evidence-based knowledge in managing traumatic dental injuries was evident among more than half of the respondents. Respondents who were cognizant of the recent International Association of Dental Traumatology guidelines (2020) and those who use the Dental Trauma Guide routinely demonstrated a higher self-reported confidence level in managing both simple and complex primary dentition trauma, as well as simple traumatic dental injuries in the permanent dentition (p < .05)., Conclusion: This survey highlights critical deficiencies in the knowledge of a large number of the respondents in the management of dental trauma which is likely to cause irreversible long-term patient effects., (© 2022 The Authors. Dental Traumatology published by John Wiley & Sons Ltd.)
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- 2022
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33. Stress Hyperglycemia Ratio as a Prognostic Marker in Diabetic Patients Hospitalized with COVID-19.
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Aon M, Alsaeedi A, Alzafiri A, Al-Shammari A, Taha S, Al-Shammari O, Tawakul M, Alshammari J, Alherz N, Alenezi M, Eyadah M, Aldhafeeri M, Alharbi T, Alshammari D, Alenezi Z, Aldouseri S, Albazee E, Ibrahim MM, and Aoun AH
- Abstract
Evidence is conflicting about the diabetes characteristics associated with worse outcome among hospitalized COVID-19 patients. We aimed to assess the role of stress hyperglycemia ratio (SHR) as a prognostic marker among them. In our retrospective cohort study, patients were stratified according to SHR, admission glucose, and glycated hemoglobin tertiles. The primary outcome was a composite endpoint of invasive mechanical ventilation, intensive care unit admission, and in-hospital mortality. The study included 395 patients with a mean age of 59 years, and 50.1% were males. Patients in the third tertile of SHR developed more primary events, and the difference was significant compared to the first tertile ( p = 0.038) and close to significance compared to the second tertile ( p = 0.054). There was no significant difference in the outcomes across admission glucose and glycated hemoglobin tertiles. A higher SHR tertile was an independent risk factor for the primary outcome (OR, 1.364; 95% CI: 1.014-1.836; p = 0.040) after adjustment for other covariables. In hospitalized COVID-19 diabetic patients, SHR third tertile was significantly associated with worse outcome and death. SHR can be a better prognostic marker compared to admission glucose and glycated hemoglobin. A higher SHR was an independent risk factor for worse outcome and in-hospital mortality.
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- 2022
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34. Psychosocial modification of general self-efficacy in older adults: A restricted review.
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FitzGerald J, Wells YD, and Ellis JM
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- Aged, Delivery of Health Care, Humans, Quality of Life, Self Efficacy
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Objectives: In recent years, the concept of general self-efficacy has increased in popularity. General self-efficacy is positively associated with quality of life and has the potential to act as a psychological buffer against adverse events and circumstances. However, due to the long-term influences that are said to shape general self-efficacy beliefs, they may be resistant to intervention, particularly within the older population. This restricted review aimed to explore whether psychosocial interventions could improve the general self-efficacy of older adults. Aspects of intervention design associated with improvements were also investigated., Methods: A restricted review was undertaken. This included a keyword search of four major health databases (PubMed, CINAHL, PsycINFO and AgeLine). Search terms focused on general self-efficacy and the commonly used measures of this concept and were limited to the older adult population., Results: In total, 848 articles were screened, with 20 studies proceeding to data extraction. The modification of general self-efficacy in older adults appears possible, with 7 out of the 20 included studies reporting improvements postintervention. Despite issues relating to the quality of included studies and the generalisability of their results, several aspects of intervention design coincided with intervention success, including intervention duration, and employing sufficiently-qualified staff., Conclusions: Future research must address the generalisability issues identified in this review. Studies comparing the effectiveness of individual- and group-based interventions, the efficacy of remote delivery platforms and the possibility for long-term transfer of any improvements are needed to contribute the high-quality data required for policy and practice decisions in this area., (© 2022 The Authors. Australasian Journal on Ageing published by John Wiley & Sons Australia, Ltd on behalf of AJA Inc’.)
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- 2022
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35. Describing communication during a forensic investigation using the Pebbles on a Scale metaphor.
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Carlson L, Kennedy J, Zeller KA, and Busey T
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During the investigation of a crime, evidence is collected, analyzed, interpreted, and discussed by various stakeholders. This article examines the communication that may occur between two of these stakeholders: detectives and forensic analysts, and how their interaction influences the interpretation of evidence as the investigation proceeds and the theory of the case evolves. Such communication can be understood as sets of actions that are inter-dependent: for example, a request for a specific analysis by a detective leads to analyses and conclusions that the analyst shares with the detective, which leads to an assessment of these conclusions relative to the theory of the case, which leads to further analysis requests, and so forth. We present the Pebbles on a Scale metaphor, which describes how communication and the understanding of evidence takes place between the detective and analysts, and the different ways in which they consider the information as a function of their roles in the investigation. Using a hypothetical case for illustration, we discuss communicative challenges, the evolving theory of the case, the language that is used by analysts to discuss "yes", "no" and "I don't know" conclusions, and how those conclusions are used by detectives during the progression of the investigation., (© 2022 The Authors. Published by Elsevier B.V.)
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- 2021
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36. Incomplete Subacute Transverse Myelitis Following Vaccination With Pfizer-BioNTech COVID-19 mRNA Vaccine: A Case Report.
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Alabkal J, Rebchuk AD, Lyndon D, and Randhawa N
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In response to the coronavirus disease 2019 (COVID-19) pandemic, rapid development, clinical testing, and regulatory approval of vaccines occurred. The tozinameran COVID-19 vaccine is the first mRNA vaccine approved for use in humans. Transverse myelitis is a rare inflammatory disorder of the spinal cord that is associated with traditional vaccinations. There are rare case reports describing an association between mRNA vaccines and transverse myelitis. Herein, we describe a case of transverse myelitis following mRNA vaccination. A healthy 26-year-old woman developed saddle anesthesia, numbness, and allodynia in the S1-S4 distribution within three days of receiving the first dose of tozinameran COVID-19 vaccine. She had decreased sensation to pinprick, temperature, and light touch in S1-S4 distribution and a positive Rhomberg test. An MRI brain and spine demonstrated a short segment T2 hyperintense and diffusely enhancing lesion at T5. Cerebrospinal fluid studies demonstrated pleocytosis and elevated IgG index. A five-day course of IV methylprednisolone resulted in minimal improvements in her symptoms. Stage III clinical trials may be underpowered to detect more rare adverse effects such as transverse myelitis. Therefore, it is imperative to have ongoing surveillance and reporting of adverse events associated with COVID-19 vaccines to ensure transparency with regard to potential risks to patients obtaining the vaccine and algorithms in place for detection and urgent treatment if required. Nonetheless, the safety and efficacy of vaccination against COVID-19 are well established and greatly outweigh any potential risks associated with the vaccine. Given the individual, societal, and global health benefits of vaccination we strongly advocate for ongoing vaccinations against COVID-19., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2021, Alabkal et al.)
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- 2021
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37. Shoulder Lipoblastoma in a 2-Year-Old Boy Case Report and Literature Review.
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Al-Tammar AA, Al-Faraj A, Abodief WT, Abughaith J, and Khaja A
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Introduction: Lipoblastoma is a rare mesenchymal benign tumor of the white fat cells that affect mostly infants and children below 3 years old. MLipoblastoma can be found in various locations in the body, however, it is usually located in the extremities, lower extremities in particular., Case Report: We describe a case of a 2-year-old Middle Eastern boy who has a rare lipoblastoma of his left shoulder that is unusual., Conclusion: The most common presentation of this rare tumor is a child younger than 3 years old with asymptomatic, painless, rapidly growing mass that warrants an appropriate index of suspicion to avoid misdiagnosis. Complete excision with free margins is fundamental as a definitive treatment of this benign tumor to eradicate any chance of recurrence or any possible complications including compressive symptoms, magnetic resonance imaging may be helpful in identifying the nature of the mass, however, the diagnosis confirmed postoperatively through histological and cytogenetic analysis. Chromosomal analysis is quite helpful in differentiating lipoblastoma from liposarcoma because they have different management and prognosis., Competing Interests: Conflict of Interest: Nil, (Copyright: © Indian Orthopaedic Research Group.)
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- 2021
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38. AusTraits, a curated plant trait database for the Australian flora.
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Falster D, Gallagher R, Wenk EH, Wright IJ, Indiarto D, Andrew SC, Baxter C, Lawson J, Allen S, Fuchs A, Monro A, Kar F, Adams MA, Ahrens CW, Alfonzetti M, Angevin T, Apgaua DMG, Arndt S, Atkin OK, Atkinson J, Auld T, Baker A, von Balthazar M, Bean A, Blackman CJ, Bloomfield K, Bowman DMJS, Bragg J, Brodribb TJ, Buckton G, Burrows G, Caldwell E, Camac J, Carpenter R, Catford JA, Cawthray GR, Cernusak LA, Chandler G, Chapman AR, Cheal D, Cheesman AW, Chen SC, Choat B, Clinton B, Clode PL, Coleman H, Cornwell WK, Cosgrove M, Crisp M, Cross E, Crous KY, Cunningham S, Curran T, Curtis E, Daws MI, DeGabriel JL, Denton MD, Dong N, Du P, Duan H, Duncan DH, Duncan RP, Duretto M, Dwyer JM, Edwards C, Esperon-Rodriguez M, Evans JR, Everingham SE, Farrell C, Firn J, Fonseca CR, French BJ, Frood D, Funk JL, Geange SR, Ghannoum O, Gleason SM, Gosper CR, Gray E, Groom PK, Grootemaat S, Gross C, Guerin G, Guja L, Hahs AK, Harrison MT, Hayes PE, Henery M, Hochuli D, Howell J, Huang G, Hughes L, Huisman J, Ilic J, Jagdish A, Jin D, Jordan G, Jurado E, Kanowski J, Kasel S, Kellermann J, Kenny B, Kohout M, Kooyman RM, Kotowska MM, Lai HR, Laliberté E, Lambers H, Lamont BB, Lanfear R, van Langevelde F, Laughlin DC, Laugier-Kitchener BA, Laurance S, Lehmann CER, Leigh A, Leishman MR, Lenz T, Lepschi B, Lewis JD, Lim F, Liu U, Lord J, Lusk CH, Macinnis-Ng C, McPherson H, Magallón S, Manea A, López-Martinez A, Mayfield M, McCarthy JK, Meers T, van der Merwe M, Metcalfe DJ, Milberg P, Mokany K, Moles AT, Moore BD, Moore N, Morgan JW, Morris W, Muir A, Munroe S, Nicholson Á, Nicolle D, Nicotra AB, Niinemets Ü, North T, O'Reilly-Nugent A, O'Sullivan OS, Oberle B, Onoda Y, Ooi MKJ, Osborne CP, Paczkowska G, Pekin B, Guilherme Pereira C, Pickering C, Pickup M, Pollock LJ, Poot P, Powell JR, Power SA, Prentice IC, Prior L, Prober SM, Read J, Reynolds V, Richards AE, Richardson B, Roderick ML, Rosell JA, Rossetto M, Rye B, Rymer PD, Sams MA, Sanson G, Sauquet H, Schmidt S, Schönenberger J, Schulze ED, Sendall K, Sinclair S, Smith B, Smith R, Soper F, Sparrow B, Standish RJ, Staples TL, Stephens R, Szota C, Taseski G, Tasker E, Thomas F, Tissue DT, Tjoelker MG, Tng DYP, de Tombeur F, Tomlinson K, Turner NC, Veneklaas EJ, Venn S, Vesk P, Vlasveld C, Vorontsova MS, Warren CA, Warwick N, Weerasinghe LK, Wells J, Westoby M, White M, Williams NSG, Wills J, Wilson PG, Yates C, Zanne AE, Zemunik G, and Ziemińska K
- Subjects
- Australia, Plant Physiological Phenomena, Databases, Factual, Phenotype, Plants
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We introduce the AusTraits database - a compilation of values of plant traits for taxa in the Australian flora (hereafter AusTraits). AusTraits synthesises data on 448 traits across 28,640 taxa from field campaigns, published literature, taxonomic monographs, and individual taxon descriptions. Traits vary in scope from physiological measures of performance (e.g. photosynthetic gas exchange, water-use efficiency) to morphological attributes (e.g. leaf area, seed mass, plant height) which link to aspects of ecological variation. AusTraits contains curated and harmonised individual- and species-level measurements coupled to, where available, contextual information on site properties and experimental conditions. This article provides information on version 3.0.2 of AusTraits which contains data for 997,808 trait-by-taxon combinations. We envision AusTraits as an ongoing collaborative initiative for easily archiving and sharing trait data, which also provides a template for other national or regional initiatives globally to fill persistent gaps in trait knowledge., (© 2021. The Author(s).)
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- 2021
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39. Seedling diversity in actively and passively restored tropical forest understories.
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Wills J, Herbohn J, Wells J, Maranguit Moreno MO, Ferraren A, and Firn J
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- Forests, Humans, Phylogeny, Plants, Tropical Climate, Ecosystem, Seedlings
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Alternative methods for restoring tropical forests influence the ecological processes that shape recruitment of understory species. In turn, the traits of species recruited will influence the ecological processes the forests provide now and over the long term. We assess the phylogenetic and functional structure of seedlings beneath monoculture plantations, mixed-species plantations (both active restoration) and regenerating selectively logged native forests (passive restoration), considering traits of specific leaf area (SLA, including within-species variation), leaf nitrogen and phosphorus content, life-form, potential plant height, and dispersal type. Monoculture plantations comprised seedlings that were more closely related then would be expected by chance (i.e., phylogenetically clustered), and regenerating forest contained species more distantly related then would be expected by chance (i.e., phylogenetically overdispersed). This suggests that seedlings beneath monocultures assemble through environmental filtering and through the dispersal limitation of predictable functional guilds. However, dispersal limitation is frequently overcome by human-assisted dispersal, increasing trait diversity. Comparing SLA values revealed that regenerating forests recruit seedlings with both high and low mean and variation of SLA, leading to higher overall diversity. Regenerating forest seedlings showed signs of environmental filtering, only based on within-species variation of SLA. Regenerating forest understories appear to favor species that show a high intraspecific variation in SLA values (e.g., Pterocarpus indicus Willd.) and at the same time provided habitat for later successional seedlings that show a lower intraspecific variation in SLA (e.g., Canarium luzonicum (Blume) A.Gray). This trait diversity suggests limiting similarity or competitive exclusion may be reduced because of niche differences, allowing species with different traits to coexist. Phylogenetic and functionally distinct species are restricted in their regeneration capacity, many of which are of conservation significance (under the IUCN Red List). Reforestation projects should maximize desired ecological services (including conservation value) by actively managing for the recruitment of species that are phylogenetically and functionally (including intraspecifically) distinct. This management aim will increase the probability of fulfilling a wider array of niche spaces and potentially increase the diversity of ecosystem services provided., (© 2021 The Authors. Ecological Applications published by Wiley Periodicals LLC on behalf of Ecological Society of America.)
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- 2021
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40. Effectiveness and sustainability of deprescribing for hospitalized older patients near end of life: a systematic review.
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Cardona M, Stehlik P, Fawzy P, Byambasuren O, Anderson J, Clark J, Sun S, and Scott I
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- Aged, Drug-Related Side Effects and Adverse Reactions prevention & control, Hospitalization, Humans, Patient Discharge, Polypharmacy, Deprescriptions, Inappropriate Prescribing prevention & control, Terminal Care methods
- Abstract
Introduction : Polypharmacy is prevalent in hospitals and deprescribing strategies for older people are strongly promoted. However, evidence of their feasibility and sustainability among patients receiving end of life care is lacking. The objective of this review was to ascertain effectiveness and post-discharge sustainability of hospital-initiated deprescribing strategies in older people near the end of life. Areas covered : The authors searched for controlled trials, with low risk of bias and measures of effectiveness post-discharge. Intervention description, duration, and healthcare provider engagement were investigated for their impact on reduction of number of medications, proportions of patients prescribed inappropriate medications, returns to emergency, hospital admission and adverse events. Expert opinion : Limited evidence suggests hospital-initiated deprescribing interventions may reduce prescribing inappropriateness among older terminal patients in the short term, but evidence beyond 3 months is lacking for significant prevention of adverse events or health service utilization. Heterogeneity precluded meta-analysis, and short follow-up periods precluded quantitative assessment of sustainability. Trials of older people with terminal conditions with larger sample sizes and longer follow-up periods are needed to confirm the effectiveness and sustainability of deprescribing at the end of life. Objective tools to reliably identify near end-of-life status would be useful in selecting target groups for these interventions.
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- 2021
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41. Imminent Extinction of Australian Myrtaceae by Fungal Disease.
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Fensham RJ, Carnegie AJ, Laffineur B, Makinson RO, Pegg GS, and Wills J
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- Australia, Ecosystem, Humans, Plant Diseases, Mycoses, Myrtaceae
- Abstract
Myrtle rust is a fungal disease that has spread rapidly across the globe, arriving in Australia in 2010. The tree species Rhodomyrtus psidioides is nearly extinct in the wild as a result of the disease, leading to potential disruption of ecosystem function. Many other Myrtaceae may also be threatened and unprecedented impacts of the disease are predicted., (Crown Copyright © 2020. Published by Elsevier Ltd. All rights reserved.)
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- 2020
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42. Childhood leukaemia incidence and trends in a Middle Eastern country during 1980-2014: a population-based study.
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Akhtar S, Al-Abkal J, and Al-Shammari A
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- Adolescent, Child, Child, Preschool, Female, Humans, Incidence, Infant, Kuwait epidemiology, Male, Retrospective Studies, Young Adult, Leukemia epidemiology, Registries
- Abstract
Background: This retrospective cohort study examines the trends in childhood leukaemia age-standardized incidence rates (ASIRs) (per million person-years) using cases which were diagnosed at age 0-19 years from 1980 to 2014 and recorded in the Kuwait Cancer Control Center (KCCC) registry., Methods: Childhood leukaemia age-specific incidence rates overall and by sub-cohorts defined by age (0-4, 5-9, 10-14, and 15-19 years), sex (male, female) and nationality (Kuwaiti, non-Kuwaiti) were computed and age-standardized. Joinpoint regression models were used to evaluate trends in childhood leukaemia ASIRs. Average annual percent change (AAPC) and its 95% confidence interval (CI) were used to interpret the observed trends., Results: During the study period, 1077 childhood leukaemia cases of 32.3 million person-years were diagnosed. From 1980 to 2014, the average annual childhood leukaemia ASIR was 53.1 (95% CI 20.9, 85.2). Overall childhood leukaemia ASIRs significantly decreased on average by 6.8% per year (AAPC = -6.8; 95% CI -12.1, -1.1; p = 0.02) from 1980 to 1993, but a marginally significant increase in ASIRs from 1993 to 2014 was recorded (AAPC = 2.5; 95% CI -0.5, 5.5; p = 0.10). During the entire period, childhood leukaemia ASIRs trends significantly (p < 0.05) increased among 6 of 16 sub-cohorts, which was more pronounced among females and 10-14-year-old children., Conclusions: Overall, ASIRs significantly increased from 1993 to 2014, which specifically seems to be driven by an increase in ASIRs among females and 10-14 -year-old children. These increasing trends underscore the potential involvement of a range of exposures. Future studies on unravelling such factors may help develop preventive measures to minimize childhood leukaemia risk in this and similar settings in the region.
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- 2020
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43. Joinpoint Regression Analysis of Trends in Multiple Sclerosis Incidence in Kuwait: 1980-2019.
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Akhtar S, Al-Abkal J, and Alroughani R
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- Adolescent, Adult, Age Distribution, Child, Child, Preschool, Cohort Studies, Cross-Sectional Studies, Female, Humans, Incidence, Infant, Kuwait epidemiology, Male, Registries, Regression Analysis, Sex Distribution, Young Adult, Multiple Sclerosis epidemiology
- Abstract
Background: Multiple sclerosis (MS) is a chronic inflammatory demyelinating and neurodegenerative disease of the central nervous system with unknown precise etiology. Temporally, a tendency for increasing MS incidence has been recorded worldwide. This cross-sectional cohort study sought to quantify trends in the age-standardized incidence rates (ASIRs) (per million person-years) of MS in Kuwait from 1980 to 2019, overall and by subcohorts defined by age at MS onset, sex, and nationality., Methods: MS incidence data from 1980 to 2019 were obtained from the Kuwait National MS Registry (KNMSR). Using midyear relevant Kuwait population as denominator and the World Standard Population as a reference, MS ASIRs overall and by subcohorts defined by age at onset (0-19, 20-39, and 40+ years), sex (male and female), and nationality (Kuwaiti and non-Kuwaiti) were computed. Joinpoint regression analysis was conducted to estimate average annual percent change (AAPC) and its 95% confidence interval (CI) overall and by subcohorts., Results: During 1980-2019, a total of 1,764 MS incident cases of 95.6 million person-years at-risk were diagnosed and registered in KNMSR. The overall MS ASIR (per million person-years) during the study period was 34.1 (95% CI: 16.1, 52.1). Between 1980 and 2010, in the total cohort, ASIRs of MS significantly increased by 13% (AAPC = 13.0; 95% CI: 10.8, 15.3; p < 0.001), followed by statistically nonsignificant declining trend during the ensuing period (AAPC = -3.8; 95% CI: -14.8, 8.8; p = 0.522). Joinpoint regression analysis revealed that 2 subcohorts of Kuwaiti females each with one joinpoint had significant increasing trends in MS ASIRs (0- to 19-year-old Kuwaiti females, AAPC: 1980-2009, 81.0; 95% CI: 58.2, 107.0; p = 0.001; 20- to 39-year-old Kuwaiti females, AAPC: 1980-1999, 131.7; 95% CI: 26.9, 322.8; p = 0.021). Additionally, of remaining 10, 6 subcohorts had significantly (p < 0.05) increasing trends in MS ASIRs from 1980 to 2019., Conclusions: From 1980 to 2010, Kuwait has an overall significantly increasing trend in MS ASIRs followed by a nonsignificant declining drift in the ensuing period. The increasing trend in MS risk appeared to be driven by increased risk among Kuwaiti females younger than 40 years. The underlying factors modulating MS risk in Kuwait need further studies., (© 2020 S. Karger AG, Basel.)
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- 2020
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44. Intensity of Cancer Care Near the End of Life at a Tertiary Care Cancer Center in Jordan.
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Abdel-Razeq H, Shamieh O, Abu-Nasser M, Nassar M, Samhouri Y, Abu-Qayas B, Asfour J, Jarrah J, Abdelrahman Z, Ameen Z, Al-Hawamdeh A, Alomari M, Al-Tabba' A, Al-Rimawi D, and Hui D
- Subjects
- Age Factors, Aged, Aged, 80 and over, Antineoplastic Agents adverse effects, Antineoplastic Agents therapeutic use, Female, Hematologic Neoplasms therapy, Humans, Jordan, Male, Middle Aged, Palliative Care statistics & numerical data, Quality of Health Care, Quality of Life, Retrospective Studies, Critical Care statistics & numerical data, Neoplasms therapy, Terminal Care, Tertiary Care Centers statistics & numerical data
- Abstract
Context: Chemotherapy use in the last month of life is an indicator of poor quality of end-of-life care., Objectives: We assessed the frequency of chemotherapy use at the end of life at our comprehensive cancer center in Jordan and identified the factors associated with chemotherapy use., Methods: We conducted a retrospective chart review to examine the use of chemotherapy in the last 30 days and 14 days of life in consecutive adult patients with cancer seen at King Hussein Cancer Center (KHCC) who died between January 1, 2010, and December 31, 2012. We collected data on patient and disease characteristics, palliative care referral, and end-of-life care outcome indicators., Results: Among the 1714 decedents, 310 (18.1%) had chemotherapy use in the last 30 days and 142 (8.3%) in the last 14 days of life. Over half (910; 53.1%) had a palliative care referral. Chemotherapy use in the last 30 and 14 days of life were associated with younger age (odds ratio [OR] 0.99/yr, P = 0.01, and OR 0.99/yr, P = 0.01, respectively) and hematological malignances (OR 1.98, P < 0.001, and OR 2.85, P < 0.001, respectively). Palliative care referral was significantly associated with decreased use of chemotherapy in the last 30 (OR 0.30, P < 0.001) and 14 (OR 0.15, P < 0.001) days of life., Conclusions: A sizable minority of patients with cancer at KHCC received chemotherapy at the end of life. Younger patients and those with hematological malignancies were more likely to receive chemotherapy, whereas those referred to palliative care were significantly less likely to receive chemotherapy at the end of life., (Copyright © 2019 American Academy of Hospice and Palliative Medicine. Published by Elsevier Inc. All rights reserved.)
- Published
- 2019
- Full Text
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45. STRmix™ collaborative exercise on DNA mixture interpretation.
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Bright JA, Cheng K, Kerr Z, McGovern C, Kelly H, Moretti TR, Smith MA, Bieber FR, Budowle B, Coble MD, Alghafri R, Allen PS, Barber A, Beamer V, Buettner C, Russell M, Gehrig C, Hicks T, Charak J, Cheong-Wing K, Ciecko A, Davis CT, Donley M, Pedersen N, Gartside B, Granger D, Greer-Ritzheimer M, Reisinger E, Kennedy J, Grammer E, Kaplan M, Hansen D, Larsen HJ, Laureano A, Li C, Lien E, Lindberg E, Kelly C, Mallinder B, Malsom S, Yacovone-Margetts A, McWhorter A, Prajapati SM, Powell T, Shutler G, Stevenson K, Stonehouse AR, Smith L, Murakami J, Halsing E, Wright D, Clark L, Taylor DA, and Buckleton J
- Subjects
- Cooperative Behavior, Gene Frequency, Genotype, Humans, Laboratories, Likelihood Functions, Reproducibility of Results, DNA analysis, DNA Fingerprinting, Microsatellite Repeats, Software
- Abstract
An intra and inter-laboratory study using the probabilistic genotyping (PG) software STRmix™ is reported. Two complex mixtures from the PROVEDIt set, analysed on an Applied Biosystems™ 3500 Series Genetic Analyzer, were selected. 174 participants responded. For Sample 1 (low template, in the order of 200 rfu for major contributors) five participants described the comparison as inconclusive with respect to the POI or excluded him. Where LRs were assigned, the point estimates ranging from 2 × 10
4 to 8 × 106 . For Sample 2 (in the order of 2000 rfu for major contributors), LRs ranged from 2 × 1028 to 2 × 1029 . Where LRs were calculated, the differences between participants can be attributed to (from largest to smallest impact): This study demonstrates a high level of repeatability and reproducibility among the participants. For those results that differed from the mode, the differences in LR were almost always minor or conservative., (Copyright © 2019 Elsevier B.V. All rights reserved.)- Published
- 2019
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46. Risk factors attributed to failure of ultrasound-guided compression for post-cardiac catheterization femoral artery pseudoaneurysms.
- Author
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Shatnawi NJ, Al-Zoubi NA, Jarrah J, Khader Y, Heis M, and Al-Omari MH
- Abstract
Background: Femoral pseudoaneurysm is the most important access site complication following cardiac catheterization. Ultrasound-guided compression repair is a safe and effective therapeutic modality with variable failure rates and risk factors. The aim of this study was to investigate which factors were associated with a higher incidence of ultrasound-guided compression repair failure for post-cardiac catheterization femoral pseudoaneurysm., Methods: Data were retrospectively collected from medical records at King Abdullah University Hospital during the period from January 2011 to December 2016. A total of 42 patients with post-cardiac catheterization femoral pseudoaneurysm had attempted ultrasound-guided compression repair. Data regarding patients, procedure and aneurysm-related factors were evaluated by univariate analysis and multivariate logistic regression., Results: Ultrasound-guided compression repair failed in 31% of the patients. Patients with body mass index of ⩾28 kg/m
2 , platelet count of ⩽180,000/L, time lag (age of aneurysm) of >48 h following puncture time, aneurysmal neck diameter of ⩾4 mm and communicating tract length of <8 mm were associated with higher rate of ultrasound-guided compression repair failure in the univariate analysis. In the multivariate analysis, time lag (age of aneurysm) > 48 h (odds ratio = 5.7), body mass index ⩾ 28 kg/m2 (odds ratio = 7.8), neck diameter > 4 mm (odds ratio = 14.4) and tract length < 8 mm (odds ratio = 18.6) were significantly associated with ultrasound-guided compression repair failure., Conclusion: Ultrasound-guided compression repair for patients with post-cardiac catheterization femoral pseudoaneurysm was successful in 69% of the patients. Risk factors for failed ultrasound-guided compression repair were as follows: delayed ultrasound-guided compression repair of >48 h, body mass index ⩾ 28 kg/m2 , wide neck diameter > 4 mm and short aneurysmal communication tract < 8 mm., Competing Interests: Declaration of conflicting interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.- Published
- 2019
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47. Do vaccination interventions have effects? A study on how poultry vaccination interventions change smallholder farmer knowledge, attitudes, and practice in villages in Kenya and Tanzania.
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Lindahl JF, Young J, Wyatt A, Young M, Alders R, Bagnol B, Kibaya A, and Grace D
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- Animals, Humans, Kenya, Rural Population statistics & numerical data, Tanzania, Vaccination psychology, Chickens, Farmers psychology, Health Knowledge, Attitudes, Practice, Newcastle Disease prevention & control, Poultry Diseases prevention & control, Vaccination veterinary
- Abstract
Poultry are important for many poor households in developing countries, but there are many constraints to poultry production, including disease. One of the most important diseases of chickens is Newcastle disease (ND). Even though there are effective vaccines against this disease available in most countries, uptake by small-scale poultry keepers is often low. In this study, two areas in Kenya and Tanzania were studied, where some villages had received additional support to get vaccination and other villages had not. In Kenya, 320 households from 10 villages were interviewed, of which half of the villages had active promotion of vaccination through village-based advisors. In Tanzania, 457 households were interviewed, of which 241 came from villages that have had active support through either a project or government extension services. Knowledge about vaccines and the attitudes towards vaccinating against ND was evaluated using mixed multivariable logistic models. Results indicate that in Kenya, the most important determinants for understanding the function of a vaccine were having had support in the village and to have knowledge about ND signs, while in Tanzania gender and previous vaccine use were important in addition to having had support. Attitudes towards vaccination were mainly determined by knowledge, where more knowledge about how vaccines work in general or about ND contributed to more positive attitudes. Among Kenyan farmers that had never used the vaccine before, the amount of birds they lost to disease and predators also influenced attitudes. In conclusion, this study supports the notion that knowledge is a very important component of extension support and that simply making vaccines available may not be sufficient for high levels of uptake.
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- 2019
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48. Updates on transcatheter aortic valve replacement: Techniques, complications, outcome, and prognosis.
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Alfadhli J, Jeraq M, Singh V, and Martinez C
- Abstract
Transcatheter aortic valve replacement (TAVR) initially emerged as a therapeutic option for high-risk patients with severe aortic stenosis. Advancement in technologies since the first era of TAVRs, experience from previous obstacles, and lessons learned from complications have allowed the evolution of this procedure to the current state. This review focuses on the updates on the most current devices, complications, and outcomes of TAVR.
- Published
- 2018
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49. Postgraduate training in audiology improves clinicians' audiology-related cue utilisation.
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Watkinson J, Bristow G, Auton J, McMahon CM, and Wiggins MW
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- Adult, Association Learning, Audiologists psychology, Clinical Competence, Discrimination, Psychological, Female, Hearing Disorders physiopathology, Humans, Judgment, Male, Predictive Value of Tests, Task Performance and Analysis, Young Adult, Audiologists education, Audiometry, Cues, Education, Graduate, Hearing, Hearing Disorders diagnosis
- Abstract
Objective: This study was designed to test whether cue utilisation might be employed as a tool to assess the diagnostic skills of audiologists. The utilisation of cues is a characteristic of expertise and critical for successful diagnoses in clinical settings. However, neither in training nor in practice, is there a means by which the diagnostic skills of audiologists can be assessed objectively and reliably., Design: The study comprised a pre-post training evaluation, controlling for prior exposure to the diagnostic testing tool., Study Sample: Three cohorts of trainee audiologists were evaluated, one of which was tested prior to, and following a two-year training programme (16 participants), while the other two groups acted as controls (23 participants and 20 participants, respectively)., Results: Consistent with expectations, cue utilisation increased from the initial to the final stages of training and this effect could not be attributed to cohort nor learning effects., Conclusions: At an applied level, the outcomes provide the basis for a cue-based diagnostic assessment tool that can provide both trainee and practising audiologists with detailed feedback concerning their diagnostic skills.
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- 2018
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50. Chronic urinary tract infection and bladder carcinoma risk: a meta-analysis of case-control and cohort studies.
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Akhtar S, Al-Shammari A, and Al-Abkal J
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- Case-Control Studies, Cohort Studies, Female, Humans, Male, Neoplasm Recurrence, Local, Recurrence, Regression Analysis, Retrospective Studies, Adenocarcinoma etiology, Carcinoma, Squamous Cell etiology, Carcinoma, Transitional Cell etiology, Urinary Bladder Neoplasms etiology, Urinary Tract Infections complications
- Abstract
Objective: This meta-analysis of published case-control and cohort studies sought to quantify the magnitude and direction of association between chronic UTI (defined as the infection of the urinary tract that either does not respond to treatment or keeps recurring) and risk of bladder carcinoma (BCa) (i.e., including mainly urothelial carcinoma, squamous cell carcinoma or adenocarcinoma)., Methods: A literature search was conducted using Medline, Embase, Ovid, Web of Science, Science Direct and Cochrane Library, which was supplemented with manual search of reference lists of the identified articles. Case-control and cohort studies examining UTI as a predictor of BCa risk published through June 2016 were eligible. Using random-effects models, odds ratios (OR) or relative risks (RR) from eligible studies were combined to synthesize summary effect estimates. The included studies were assessed for methodological quality and potential publication bias. Heterogeneity by study characteristics was examined by sub-group and meta-regression analyses., Results: Eighteen case-control and three cohort studies published between 1963 and 2016 were eligible. Random-effects models showed that UTI was significantly associated with an increased BCa risk both in case-control studies (summary OR
RE = 2.33; 95% CI 1.86, 2.92) and cohort studies (summary RRRE = 2.88; 95% CI 1.20, 6.89). The observed relationship of UTI with an increased BCa risk was independent of the study characteristics considered. No significant publication bias was detected., Conclusions: Chronic UTI was significantly and independently associated with an increased BCa risk. However, due to the presence of high between-study heterogeneity and inconsistent patterns of adjusted confounding effects, more data are needed to clarify the role of chronic UTI in causation of BCa and if established, prompt and effective treatment of UTI may minimize a substantial proportion of BCa risk.- Published
- 2018
- Full Text
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