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Alsaadi D, Low D, Osman A, Mcmonagle M. Use of jejunal serosal patch and pyloric exclusion in the management of complex duodenal injury. Ann R Coll Surg Engl 2024; 106:413-417. [PMID: 38445581 PMCID: PMC11060854 DOI: 10.1308/rcsann.2023.0074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/18/2023] [Indexed: 03/07/2024] Open
Abstract
BACKGROUND Duodenal injuries are relatively rare but remain a management challenge with a high incidence of postoperative complications. Guidelines from the World Society of Emergency Surgery and American Association for the Surgery of Trauma favour a primary repair for less-complex injuries, but the management of more complex duodenal trauma remains controversial with varying techniques supported, including pyloric exclusion, omental or jejunal patch closure, gastrojejunostomy and pancreatoduodenectomy. We describe the techniques used in one case of complex duodenal trauma. TECHNIQUE The duodenum is approached via a standard laparotomy with Kocherisation. Primary repair of the duodenal perforations is performed using a 3/0 polydioxanone suture (PDS), followed by mobilisation of a loop of mid-jejunum against the area of duodenal trauma over the primary repair as a jejunal serosal patch. The antimesenteric jejunal serosal border is sutured to the serosa of the duodenum (serosa only) using a 3/0 PDS. Pyloric exclusion is then performed through an anterior gastrostomy, to control the volume of gastric juice entering the duodenum. The pylorus is sutured closed using an absorbable suture followed by closure of the anterior gastrostomy using a GIA stapling device.
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Affiliation(s)
- D Alsaadi
- University Hospital Waterford, Ireland
| | - D Low
- University of Pennsylvania, USA
| | - A Osman
- Saint Luke’s General Hospital, Kilkenny, Ireland
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Osman A, Patel S, Gonsalves M, Renani S, Morgan R. Vascular Interventions in Oncology. Clin Oncol (R Coll Radiol) 2023:S0936-6555(23)00311-4. [PMID: 37805354 DOI: 10.1016/j.clon.2023.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 07/21/2023] [Accepted: 09/13/2023] [Indexed: 10/09/2023]
Abstract
Vascular interventions are an important and established tool in the management of the oncology patient. The goal of these procedures may be curative, palliative or adjunctive in nature. Some of the common vascular interventions used in oncology include transarterial embolisation or chemoembolisation, selective internal radiation therapy, chemosaturation, venous access lines, superior vena cava stenting and portal vein embolisation. We provide an overview of the principles, technology and approach of vascular techniques for tumour therapy in both the arterial and venous systems. Arterial interventions are currently mainly used in the management of hepatocellular carcinoma. Transarterial embolisation, chemoembolisation and selective internal radiation therapy deliver targeted catheter-delivered treatments with the aim of reducing tumour burden, controlling tumour growth or increasing survival in patients not eligible for transplantation. Chemosaturation is a regional chemotherapy technique that delivers high doses of chemotherapy directly to the liver via the hepatic artery, while reducing the risks of systemic effects. Venous interventions are more adjunctive in nature. Venous access lines are used to provide a means of delivering chemotherapy and other medications directly into the bloodstream. Superior vena cava stenting is a palliative procedure that is used to relieve symptoms of superior vena cava obstruction. Portal vein embolisation is a procedure that allows hypertrophy of a healthy portion of the liver in preparation for liver resection. Interventional radiology-led vascular interventions play an essential part of cancer management. These procedures are minimally invasive and provide a safe and effective adjunct to traditional cancer treatment methods. Appropriate work-up and discussion of each patient-specific problem in a multidisciplinary setting with interventional radiology is essential to provide optimum patient-centred care.
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Affiliation(s)
- A Osman
- St George's Hospital University Hospitals NHS Foundation Trust, London, UK.
| | - S Patel
- St George's Hospital University Hospitals NHS Foundation Trust, London, UK
| | - M Gonsalves
- St George's Hospital University Hospitals NHS Foundation Trust, London, UK
| | - S Renani
- St George's Hospital University Hospitals NHS Foundation Trust, London, UK
| | - R Morgan
- St George's Hospital University Hospitals NHS Foundation Trust, London, UK
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Zhou A, Osman A, Flores G, Srikrishnaraj D, Mohanty J, Al Bader R, Llancari A, El-Hashemi A, Elias M, Mirza K, Muldoon M, Palazzolo R, Zaib F, Woldie I, Hamm C. Critical Illness in Migrant Workers in the Windsor-Essex Region: A Descriptive Analysis. Int J Environ Res Public Health 2023; 20:6587. [PMID: 37623172 PMCID: PMC10454922 DOI: 10.3390/ijerph20166587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 08/01/2023] [Accepted: 08/12/2023] [Indexed: 08/26/2023]
Abstract
Despite their essential role in Canadian agriculture, migrant workers face numerous healthcare barriers. There is a knowledge gap regarding the healthcare experiences of migrant workers with critical illness in the Windsor-Essex region. Our objective was to collect information on the experiences of migrant workers experiencing a critical illness at Windsor Regional Hospital (WRH) between 31 December 2011 and 31 December 2021. We conducted a retrospective chart review and interviews with migrant workers. We identified 14 migrant workers who presented to WRH with a critical illness over these 10 years. Despite occasional barriers regarding access to care, the migrant workers received an appropriate standard of care in Canada. Five of the fourteen patients identified were repatriated to their home countries. The migrant worker patients interviewed expressed satisfaction with the care they received in Canada but identified repatriation as a specific concern to receiving continuity of care. The health and financial burden imposed by critical illness on migrant workers and their employers makes critically ill workers vulnerable to medical repatriation as a unique social determinant of health. Considering the critical role of migrant workers in Canada's food security, policy changes should be considered to ensure critically ill workers are able to remain until recovery.
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Affiliation(s)
- Alex Zhou
- Schulich School of Medicine, Dentistry Windsor Campus, Windsor, ON N9B 3P4, Canada; (A.Z.); (A.O.); (D.S.); (R.A.B.); (M.E.); (K.M.); (F.Z.)
| | - Abdelhady Osman
- Schulich School of Medicine, Dentistry Windsor Campus, Windsor, ON N9B 3P4, Canada; (A.Z.); (A.O.); (D.S.); (R.A.B.); (M.E.); (K.M.); (F.Z.)
| | - Genesis Flores
- Department of Biomedical Sciences, University of Windsor, Windsor, ON N9B 3P4, Canada; (G.F.); (A.E.-H.); (R.P.); (I.W.)
| | - Dhuvaraha Srikrishnaraj
- Schulich School of Medicine, Dentistry Windsor Campus, Windsor, ON N9B 3P4, Canada; (A.Z.); (A.O.); (D.S.); (R.A.B.); (M.E.); (K.M.); (F.Z.)
| | - Jayashree Mohanty
- School of Social Work, University of Windsor, Windsor, ON N9A 0C5, Canada;
| | - Retage Al Bader
- Schulich School of Medicine, Dentistry Windsor Campus, Windsor, ON N9B 3P4, Canada; (A.Z.); (A.O.); (D.S.); (R.A.B.); (M.E.); (K.M.); (F.Z.)
| | - Amy Llancari
- Department of Biological Sciences, University of Windsor, Windsor, ON N9B 3P4, Canada;
| | - Aya El-Hashemi
- Department of Biomedical Sciences, University of Windsor, Windsor, ON N9B 3P4, Canada; (G.F.); (A.E.-H.); (R.P.); (I.W.)
| | - Manahel Elias
- Schulich School of Medicine, Dentistry Windsor Campus, Windsor, ON N9B 3P4, Canada; (A.Z.); (A.O.); (D.S.); (R.A.B.); (M.E.); (K.M.); (F.Z.)
| | - Kanza Mirza
- Schulich School of Medicine, Dentistry Windsor Campus, Windsor, ON N9B 3P4, Canada; (A.Z.); (A.O.); (D.S.); (R.A.B.); (M.E.); (K.M.); (F.Z.)
| | - Maureen Muldoon
- Faculty of Arts, Humanities and Social Sciences, University of Windsor, Windsor, ON N9B 3P4, Canada;
| | - Ryan Palazzolo
- Department of Biomedical Sciences, University of Windsor, Windsor, ON N9B 3P4, Canada; (G.F.); (A.E.-H.); (R.P.); (I.W.)
| | - Farwa Zaib
- Schulich School of Medicine, Dentistry Windsor Campus, Windsor, ON N9B 3P4, Canada; (A.Z.); (A.O.); (D.S.); (R.A.B.); (M.E.); (K.M.); (F.Z.)
| | - Indryas Woldie
- Department of Biomedical Sciences, University of Windsor, Windsor, ON N9B 3P4, Canada; (G.F.); (A.E.-H.); (R.P.); (I.W.)
- Windsor Regional Hospital Cancer Program, Windsor, ON N8W 1L9, Canada
| | - Caroline Hamm
- Schulich School of Medicine, Dentistry Windsor Campus, Windsor, ON N9B 3P4, Canada; (A.Z.); (A.O.); (D.S.); (R.A.B.); (M.E.); (K.M.); (F.Z.)
- Department of Biomedical Sciences, University of Windsor, Windsor, ON N9B 3P4, Canada; (G.F.); (A.E.-H.); (R.P.); (I.W.)
- Windsor Regional Hospital Cancer Program, Windsor, ON N8W 1L9, Canada
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Imbabi T, Hassan A, Ahmed-Farid O, El-Garhy O, Sabeq I, Moustafa M, Mohammadein A, Hassan N, Osman A, Sitohy M. Corrigendum to "Supplementing rabbit diets with butylated hydroxyanisole affects oxidative stress, growth performance, and meat quality" [Animal 15(9) (2021) 100339]. Animal 2023; 17:100859. [PMID: 37451744 DOI: 10.1016/j.animal.2023.100859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023] Open
Affiliation(s)
- T Imbabi
- Animal Production Department, Faculty of Agriculture, Benha University, Moshtohor 13736, Egypt
| | - A Hassan
- Department of Biotechnology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - O Ahmed-Farid
- Department of Physiology, National Organization for Drug Control and Research, Giza 12553, Egypt
| | - O El-Garhy
- Animal Production Department, Faculty of Agriculture, Benha University, Moshtohor 13736, Egypt
| | - I Sabeq
- Department of Food Hygiene, Faculty of Veterinary Medicine, Benha University, Moshtohor 13736, Egypt
| | - M Moustafa
- Genetics and Genetic Engineering Department, Faculty of Agriculture, Benha University, Moshtohor 13736, Egypt(1)
| | - A Mohammadein
- Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - N Hassan
- Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - A Osman
- Biochemistry Department, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt.
| | - M Sitohy
- Biochemistry Department, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt.
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Osman A, Speechley M, Ali S, Montero-Odasso M. Fall-Risk-Increasing Drugs and Gait Performance in Community-Dwelling Older Adults: Exploratory Results from the Gait and Brain Study. Drugs Aging 2023:10.1007/s40266-023-01045-1. [PMID: 37347412 DOI: 10.1007/s40266-023-01045-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/06/2023] [Indexed: 06/23/2023]
Abstract
BACKGROUND/OBJECTIVE While several psychotropic and cardiovascular drugs have been identified as fall-risk-increasing drugs (FRIDs) in older adults, the intervening mechanisms linking FRIDs and falls are unclear. It is plausible that gait performance is an intermediate variable on the causal pathway between FRIDs and falls. The current evidence on the relationship between medication use and gait performance in older adults is scarce. We aimed to assess the association between FRIDs and gait performance in community-dwelling older adults. METHODS This was a cross-sectional analysis using data from the Gait and Brain Study, a study of community-dwelling older adults aged 65 years old and over (N = 345). The following drug classes were assessed: antidepressants, benzodiazepines, alpha-blockers, beta-blockers, vasodilators, diuretics, statins and aspirin. Medication use was ascertained through validated questionnaires and electronic medical records. Multiple linear regression models were used to assess the association between each of the drug classes and gait speed and gait variability. Gait variability was expressed as the coefficient of variation (CV = mean/standard deviation) of stride time. Models were adjusted for age, sex, education, body mass index (BMI), mini-mental status exam (MMSE) score, Geriatric Depression Scale (GDS) score, general activity level, use of other FRIDs and comorbidity propensity score. RESULTS Diuretic use was associated with significantly reduced gait speed (B = -7.97 cm/s, 95% CI: -13.94, -2.00, P = 0.009). Statin use was associated with significantly increased stride time CV (B = 0.13, 95% CI: 0.02, 0.24, P = 0.026). Other drugs did not have a statistically significant relationship with gait speed or variability. CONCLUSION The association between diuretic use and reduced gait speed is consistent with existing evidence on diuretic use and increased fall risk. The association between statins and increased stride time variability is notable given inconclusive evidence in previous studies. Our results provide initial estimates of the association between FRIDs and gait performance in older adults for future longitudinal studies.
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Affiliation(s)
- Abdelhady Osman
- Department of Epidemiology and Biostatistics, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON, N6G 2M1, Canada.
- Gait and Brain Lab, Parkwood Institute, Lawson Health Research Institute, London, ON, N6C 0A7, Canada.
| | - Mark Speechley
- Department of Epidemiology and Biostatistics, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON, N6G 2M1, Canada
- Gait and Brain Lab, Parkwood Institute, Lawson Health Research Institute, London, ON, N6C 0A7, Canada
- Schulich Interfaculty Program in Public Health, The University of Western Ontario, London, ON, N6G 2M1, Canada
| | - Shehzad Ali
- Department of Epidemiology and Biostatistics, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON, N6G 2M1, Canada
- Schulich Interfaculty Program in Public Health, The University of Western Ontario, London, ON, N6G 2M1, Canada
| | - Manuel Montero-Odasso
- Department of Epidemiology and Biostatistics, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON, N6G 2M1, Canada
- Gait and Brain Lab, Parkwood Institute, Lawson Health Research Institute, London, ON, N6C 0A7, Canada
- Division of Geriatric Medicine, Department of Medicine, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON, N6C 0A7, Canada
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6
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Imbabi T, El-Garhy O, Moustafa M, Sabeq I, Osman A, Sitohy M, Refaat M, Samir A, Abdel Moneim U, El-Badawy M, Abbass A. Author reply to the expression of concern on "Supplementing rabbit diets with butylated hydroxyanisole affects oxidative stress, growth performance, and meat quality" [Animal 16(9) (2021) 100339]. Animal 2023:100868. [PMID: 37357091 DOI: 10.1016/j.animal.2023.100868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2023] Open
Affiliation(s)
- T Imbabi
- Faculty of Agriculture, Benha University, Moshtohor 13736, Egypt
| | - O El-Garhy
- Faculty of Agriculture, Benha University, Moshtohor 13736, Egypt
| | - M Moustafa
- Faculty of Agriculture, Benha University, Moshtohor 13736, Egypt
| | - I Sabeq
- Faculty of Veterinary Medicine, Benha University, Moshtohor 13736, Egypt
| | - A Osman
- Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
| | - M Sitohy
- Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt.
| | - M Refaat
- Vice-Dean for Postgraduate and Research Affairs & Ethics Committees, Benha University, Moshtohor 13736, Egypt
| | - A Samir
- Vice-Dean for Postgraduate and Research Affairs, Benha University, Moshtohor 13736, Egypt
| | - U Abdel Moneim
- Dean of Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
| | - M El-Badawy
- Dean of Faculty of Agriculture, Benha University, Moshtohor 13736, Egypt
| | - A Abbass
- Dean of Faculty of Veterinary Medicine, Benha University, Moshtohor 13736, Egypt
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Aishah A, Tong B, Osman A, Donegan M, Pitcher G, Kwan B, Brown L, Altree T, Adams R, Mukherjee S, Eckert D. Targeted combination therapy based on endotypes resolves obstructive sleep apnoea. Sleep Med 2022. [DOI: 10.1016/j.sleep.2022.05.753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Buchholtz N, Hermans L, Umunnakwe C, De Jong T, Osman A, Symons J, Tempelman H, Wensing A, Nijhuis M. PP 3.8 – 00137 Characterization of the HIV-1 subtype C reservoir during ART in South-African men and women. J Virus Erad 2022. [DOI: 10.1016/j.jve.2022.100188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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Karattuparambil J, Anchal J, Osman A, Srinivasan L. ERECTOR SPINAE PLANE BLOCK CATHETER: A GOAL STANDARD FOR THORACIC ANAESTHESIA? J Cardiothorac Vasc Anesth 2022. [DOI: 10.1053/j.jvca.2022.09.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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Wijetunga N, Goglia A, Weinhold N, Cislo M, Berger M, Osman A, Pentsova E, Miller A, Powell S, Boire A, Yang J. The Dynamic Mutational Landscape of Cerebrospinal Fluid Circulating Tumor DNA can Predict Survival after Proton Craniospinal Irradiation for Leptomeningeal Metastasis. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Osman A, Crowley J, Gordon GSD. Training generative adversarial networks for optical property mapping using synthetic image data. Biomed Opt Express 2022; 13:5171-5186. [PMID: 36425623 PMCID: PMC9664886 DOI: 10.1364/boe.458554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 06/13/2022] [Accepted: 06/13/2022] [Indexed: 06/16/2023]
Abstract
We demonstrate the training of a generative adversarial network (GAN) for the prediction of optical property maps (scattering and absorption) using spatial frequency domain imaging (SFDI) image data sets that are generated synthetically with a free open-source 3D modelling and rendering software, Blender. The flexibility of Blender is exploited to simulate 5 models with real-life relevance to clinical SFDI of diseased tissue: flat samples containing a single material, flat samples containing 2 materials, flat samples containing 3 materials, flat samples with spheroidal tumours and cylindrical samples with spheroidal tumours. The last case is particularly relevant as it represents wide-field imaging inside a tubular organ e.g. the gastro-intestinal tract. In all 5 scenarios we show the GAN provides an accurate reconstruction of the optical properties from single SFDI images with a mean normalised error ranging from 1.0-1.2% for absorption and 1.1%-1.2% for scattering, resulting in visually improved contrast for tumour spheroid structures. This compares favourably with the ∼10% absorption error and ∼10% scattering error achieved using GANs on experimental SFDI data. Next, we perform a bi-directional cross-validation of our synthetically-trained GAN, retrained with 90% synthetic and 10% experimental data to encourage domain transfer, with a GAN trained fully on experimental data and observe visually accurate results with an error of 6.3%-10.3% for absorption and 6.6%-11.9% for scattering. Our synthetically trained GAN is therefore highly relevant to real experimental samples but provides the significant added benefits of large training datasets, perfect ground-truths and the ability to test realistic imaging geometries, e.g. inside cylinders, for which no conventional single-shot demodulation algorithms exist. In the future, we expect that the application of techniques such as domain adaptation or training on hybrid real-synthetic datasets will create a powerful tool for fast, accurate production of optical property maps for real clinical imaging systems.
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Affiliation(s)
- A Osman
- Optics and Photonics Group, Faculty of Engineering, The University of Nottingham, Nottingham, United Kingdom
| | - J Crowley
- Optics and Photonics Group, Faculty of Engineering, The University of Nottingham, Nottingham, United Kingdom
| | - G S D Gordon
- Optics and Photonics Group, Faculty of Engineering, The University of Nottingham, Nottingham, United Kingdom
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Osman A, Duncan A, Giurca P, Maxwell CJ, Kamkar N, Hogan DB, Montero-Odasso M. Listening to Trainee Concerns and Suggestions During COVID-19: a Report from the Canadian Consortium on Neurodegeneration in Aging (CCNA). Can Geriatr J 2022; 25:262-268. [PMID: 36117738 PMCID: PMC9427181 DOI: 10.5770/cgj.25.564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Background
The COVID-19 pandemic has caused significant disruption to research activities across Canada. The Training and Capacity Building (T&CB) Program of the Canadian Consortium on Neurodegeneration in Aging (CCNA) conducted a survey be-tween May 11th, 2020 and May 19th, 2020 to identify the chal-lenges faced by CCNA trainees because of the pandemic and how to best support trainees in response to those challenges.
Methods
Graduate students and postdoctoral researchers working under the supervision of CCNA investigators (n=113) were invited to complete a web-based survey of 13 questions. Trainees were asked questions about the impact of COVID-19 on their research activities, degree progression, funding status, and suggestions for support from the T&CB Program during the COVID-19 pandemic.
Results
A total of 41 trainees responded to the survey (response rate: 36.3%); 83% of respondents reported that they experienced changes to their research activities as a result of COVID-19, and 50% anticipated that their degree completion would be delayed. Respondents requested information from the T&CB Program on funding for non-COVID-19 projects, alternative datasets, and short educational workshops.
Conclusion
The majority of CCNA trainees surveyed experienced sig-nificant changes to their research activities as a result of the COVID-19 pandemic. The T&CB Program responded by switching to online programming and facilitating remote research. Further engagement with trainees is needed to ensure continued progress of research in age-related neurodegenera-tive disease in Canada post-pandemic.
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Osman A, Kamkar N, Speechley M, Ali S, Montero-Odasso M. Fall risk-increasing drugs and gait performance in community-dwelling older adults: A systematic review. Ageing Res Rev 2022; 77:101599. [PMID: 35219903 DOI: 10.1016/j.arr.2022.101599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 02/12/2022] [Accepted: 02/23/2022] [Indexed: 11/01/2022]
Abstract
PURPOSE Medication use, and gait impairment are two major risk factors for falls in older adults. There are several mechanisms linking fall risk-increasing drugs (FRIDs) and increased fall risk. One pathway involves gait performance as an intermediate variable. It is plausible that FRIDs indirectly increase fall risk by causing gait impairment. The purpose of this review was to systematically review the existing evidence on the association between FRIDs and gait performance in community-dwelling older adults without neurological movement disorders. METHODS Two searches were performed using MeSH terms and keywords in the electronic databases MEDLINE, EMBASE, PsycINFO, CINAHL and grey literature. We included clinical trials and observational studies that assessed the association between a FRID class and any quantitative measure of gait performance. Quality assessment was performed using the Newcastle-Ottawa scale for observational studies and the Cochrane risk-of-bias tool for clinical trials. Study characteristics and findings were summarized in a descriptive approach for each drug class. RESULTS A total of 11,197 studies were retrieved from both searches at the first step and a total of 23 studies met the final inclusion criteria. Fourteen studies assessed the association between psychotropic FRIDs and gait performance and nine assessed cardiovascular FRIDs. Four out of five studies found that drugs with sedative properties are associated with reduced gait speed in older adults. Three out of four studies found no association between statin use and gait speed. There is insufficient evidence on the association between FRIDs and other gait performance measures. CONCLUSION Caution should be taken when prescribing drugs with sedative properties to older adults at risk of falls. Further research is required to assess the impact of the use FRIDs on gait performance measures other than gait speed.
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Mohamed S, Patel AJ, Mazhar K, Osman A, Balacumaraswami L, Ridley P. Native pulmonary valve endocarditis requiring pulmonary valve replacement in adulthood: a case series. J Surg Case Rep 2022; 2022:rjac137. [PMID: 35444791 PMCID: PMC9015772 DOI: 10.1093/jscr/rjac137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 03/14/2022] [Indexed: 11/13/2022] Open
Abstract
Native pulmonary valve endocarditis is a rare phenomenon as native valve endocarditis tends to typically affect the left sided heart valves. However, the right-sided heart valves can be affected in patients with a history of intravenous drug use, whereby the tricuspid valve is most commonly affected. We present two cases who were diagnosed with native pulmonary valve endocarditis in the absence of congenital heart disease. In the first case, the native pulmonary valve endocarditis was probably a derivative of compounding factors of an enlarged underlying pulmonary artery and staphylococcal bacteraemia. In the second case, a common causal organism of native valve endocarditis following dental treatment and the resultant echocardiography findings was of significant interest. In summary, native pulmonary valve endocarditis is relatively rare complication in the adult population, especially in the absence of congenital heart disease.
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Affiliation(s)
- S Mohamed
- Department of Cardiothoracic Surgery, Royal Stoke University Hospital, Stoke on Trent, UK
| | - A J Patel
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham B15 2TT, UK
| | - K Mazhar
- Department of Cardiothoracic Surgery, Royal Stoke University Hospital, Stoke on Trent, UK
| | - A Osman
- Department of Cardiothoracic Surgery, Royal Stoke University Hospital, Stoke on Trent, UK
| | - L Balacumaraswami
- Department of Cardiothoracic Surgery, Royal Stoke University Hospital, Stoke on Trent, UK
| | - P Ridley
- Department of Cardiothoracic Surgery, Royal Stoke University Hospital, Stoke on Trent, UK
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Schapira M, Outumuro MB, Giber F, Pino C, Mattiussi M, Montero-Odasso M, Boietti B, Saimovici J, Gallo C, Hornstein L, Pollán J, Garfi L, Osman A, Perman G. Geriatric co-management and interdisciplinary transitional care reduced hospital readmissions in frail older patients in Argentina: results from a randomized controlled trial. Aging Clin Exp Res 2022; 34:85-93. [PMID: 34100241 DOI: 10.1007/s40520-021-01893-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 05/21/2021] [Indexed: 12/11/2022]
Abstract
BACKGROUND Hospitalization is a moment of extreme vulnerability for frail older adults. There is scarce evidence on the effectiveness of geriatric co-management or transitional care interventions in Latin America. AIMS To assess whether geriatric co-management combined with an interdisciplinary transitional care intervention could reduce 30-day hospital readmission rate compared to usual care in hospitalized frail older patients in a tertiary hospital in Argentina. METHODS Single-blinded randomized controlled trial. Usual care treatment arm: all procedures performed during hospitalization were overseen by a senior internal medicine specialist and complied with pre-defined protocols. Patients had access to specialist care if needed, as well as hospital-at-home or home-based primary care services after discharge. Intervention treatment arm: in addition to usual care, a geriatric co-management team performed a comprehensive geriatric assessment during hospitalization, provided tailored recommendations to minimize geriatric syndromes and planned transition of care. A health and social care counselor oversaw continuity of care in patients' homes after discharge. RESULTS We included 120 participants in each of the intervention and usual care (control) arms. Thirty-day hospital readmissions were 47.7% lower in the intervention arm (18.3% vs 35.0%; P = 0.040); and emergency room visits within the first 6 months after discharge were 27.8% lower (43.3% vs 60.0%; P = 0.010). There was a non-statistically significant decrease in 6-month mortality in the intervention arm (25.0% vs 35.0%; P = 0.124). CONCLUSION Geriatric co-management of frail older patients during hospitalization combined with an interdisciplinary transitional care intervention reduced 30-day hospital readmissions and emergency visits 6 months after discharge. TRIAL REGISTRATION NUMBER Trial registration number: RENIS IS003081.
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Gus'kov AV, Oleinikov AA, Domashkevich NS, Osman A. [Possibilities and prospects for experimental and clinical instrumentation techniques for determining the primary stability of dental implants in comparative analysis]. Stomatologiia (Mosk) 2022; 101:96-102. [PMID: 35184542 DOI: 10.17116/stomat202210101196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The high primary stability of dental implants provides a favorable prognosis for orthopedic treatment with implant-supported structures. The importance of assessing the stability and the bone tissue surrounding the implant as a whole is due to the fact that the process of osseointegration is a structural and functional connection between the bone and the loaded surface of the implant. Determination of the dynamics of the stability of dental implants allows timely monitoring of unpredictable changes at the stages of osseointegration and remodeling of bone tissue around the implant. Currently, in addition to clinical and radiation diagnostic methods, there are generally recognized by clinicians frequency resonance analysis and periotestometry. However, there are some scientific discrepancies indicating the lack of objectivity of these methods and the impossibility of their full-fledged application without the support of radiation and clinical diagnostic methods. In addition to these methods, there are many experimental and less common methods in clinical practice for assessing the primary stability of implants, but with reasonable objectivity. Thus, the reasons are given that for a full assessment of the relationship between the efforts exerted on implants and their movements in the space of bone tissue, devices are needed that reflect the stability and density of the contact of the implant with bone tissue in physical quantities. In particular, methods based on lasers, sound, quantitative ultrasound, and others have found experimental practical application. The ultrasound method of assessing the primary stability of the implant is estimated as the most promising, since it allows you to demonstrate the results of studies in certain physical quantities, as well as to compare these results with histomorphological indicators of osseointegration of dental implants.
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Affiliation(s)
- A V Gus'kov
- Ryazan State Medical University, Ryazan, Russia
| | | | | | - A Osman
- Ryazan State Medical University, Ryazan, Russia
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Montero-Odasso MM, Kamkar N, Pieruccini-Faria F, Osman A, Sarquis-Adamson Y, Close J, Hogan DB, Hunter SW, Kenny RA, Lipsitz LA, Lord SR, Madden KM, Petrovic M, Ryg J, Speechley M, Sultana M, Tan MP, van der Velde N, Verghese J, Masud T. Evaluation of Clinical Practice Guidelines on Fall Prevention and Management for Older Adults: A Systematic Review. JAMA Netw Open 2021; 4:e2138911. [PMID: 34910151 PMCID: PMC8674747 DOI: 10.1001/jamanetworkopen.2021.38911] [Citation(s) in RCA: 98] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 10/07/2021] [Indexed: 11/21/2022] Open
Abstract
Importance With the global population aging, falls and fall-related injuries are ubiquitous, and several clinical practice guidelines for falls prevention and management for individuals 60 years or older have been developed. A systematic evaluation of the recommendations and agreement level is lacking. Objectives To perform a systematic review of clinical practice guidelines for falls prevention and management for adults 60 years or older in all settings (eg, community, acute care, and nursing homes), evaluate agreement in recommendations, and identify potential gaps. Evidence Review A systematic review following Preferred Reporting Items for Systematic Reviews and Meta-analyses statement methods for clinical practice guidelines on fall prevention and management for older adults was conducted (updated July 1, 2021) using MEDLINE, PubMed, PsycINFO, Embase, CINAHL, the Cochrane Library, PEDro, and Epistemonikos databases. Medical Subject Headings search terms were related to falls, clinical practice guidelines, management and prevention, and older adults, with no restrictions on date, language, or setting for inclusion. Three independent reviewers selected records for full-text examination if they followed evidence- and consensus-based processes and assessed the quality of the guidelines using Appraisal of Guidelines for Research & Evaluation II (AGREE-II) criteria. The strength of the recommendations was evaluated using Grades of Recommendation, Assessment, Development, and Evaluation scores, and agreement across topic areas was assessed using the Fleiss κ statistic. Findings Of 11 414 records identified, 159 were fully reviewed and assessed for eligibility, and 15 were included. All 15 selected guidelines had high-quality AGREE-II total scores (mean [SD], 80.1% [5.6%]), although individual quality domain scores for clinical applicability (mean [SD], 63.4% [11.4%]) and stakeholder (clinicians, patients, or caregivers) involvement (mean [SD], 76.3% [9.0%]) were lower. A total of 198 recommendations covering 16 topic areas in 15 guidelines were identified after screening 4767 abstracts that proceeded to 159 full texts. Most (≥11) guidelines strongly recommended performing risk stratification, assessment tests for gait and balance, fracture and osteoporosis management, multifactorial interventions, medication review, exercise promotion, environment modification, vision and footwear correction, referral to physiotherapy, and cardiovascular interventions. The strengths of the recommendations were inconsistent for vitamin D supplementation, addressing cognitive factors, and falls prevention education. Recommendations on use of hip protectors and digital technology or wearables were often missing. None of the examined guidelines included a patient or caregiver panel in their deliberations. Conclusions and Relevance This systematic review found that current clinical practice guidelines on fall prevention and management for older adults showed a high degree of agreement in several areas in which strong recommendations were made, whereas other topic areas did not achieve this level of consensus or coverage. Future guidelines should address clinical applicability of their recommendations and include perspectives of patients and other stakeholders.
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Affiliation(s)
- Manuel M Montero-Odasso
- Schulich School of Medicine and Dentistry, Division of Geriatric Medicine, Department of Medicine, The University of Western Ontario, London, Ontario, Canada
- Gait and Brain Lab, Parkwood Institute, Lawson Health Research Institute, London, Ontario, Canada
- Department of Epidemiology and Biostatistics, The University of Western Ontario, London, Ontario, Canada
| | - Nellie Kamkar
- Gait and Brain Lab, Parkwood Institute, Lawson Health Research Institute, London, Ontario, Canada
| | - Frederico Pieruccini-Faria
- Gait and Brain Lab, Parkwood Institute, Lawson Health Research Institute, London, Ontario, Canada
- Department of Epidemiology and Biostatistics, The University of Western Ontario, London, Ontario, Canada
| | - Abdelhady Osman
- Department of Epidemiology and Biostatistics, The University of Western Ontario, London, Ontario, Canada
| | - Yanina Sarquis-Adamson
- Gait and Brain Lab, Parkwood Institute, Lawson Health Research Institute, London, Ontario, Canada
| | - Jacqueline Close
- Falls, Balance and Injury Research Centre, Neuroscience Research Australia, University of New South Wales, Sydney, Australia
- Prince of Wales Clinical School, Medicine, University of New South Wales, Sydney, Australia
| | - David B Hogan
- Division of Geriatric Medicine, Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Susan Winifred Hunter
- Faculty of Health Sciences, University of Western Ontario, London, Ontario, Canada
- School of Physical Therapy, University of Western Ontario, London, Ontario, Canada
| | - Rose Anne Kenny
- Department of Medical Gerontology, Mercers Institute for Ageing, St James Hospital, Dublin, Ireland
| | - Lewis A Lipsitz
- Hinda and Arthur Marcus Institute for Aging Research, Hebrew SeniorLife, Harvard Medical School, Boston, Massachusetts
| | - Stephen R Lord
- Falls, Balance and Injury Research Centre, Neuroscience Research Australia, Sydney, New South Wales, Australia
- School of Public Health and Community Medicine, University of New South Wales, Sydney, New South Wales, Australia
| | - Kenneth M Madden
- Division of Geriatric Medicine, Department of Medicine, Department of Internal Medicine, Section of Geriatric Medicine, University of British Columbia, Vancouver, British Columbia, Canada
- Division of Geriatric Medicine, Department of Medicine, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Mirko Petrovic
- Section of Geriatrics, Department of Internal Medicine and Paediatrics, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
| | - Jesper Ryg
- Department of Geriatric Medicine, Odense University Hospital, Odense, Denmark
- Geriatric Research Unit, Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Mark Speechley
- Department of Epidemiology and Biostatistics, The University of Western Ontario, London, Ontario, Canada
- Schulich Interfaculty Program in Public Health, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, Canada
| | - Munira Sultana
- Gait and Brain Lab, Parkwood Institute, Lawson Health Research Institute, London, Ontario, Canada
| | - Maw Pin Tan
- Centre for Innovation in Medical Engineering, Faculty of Engineering, University of Malaysia, Kuala Lumpur, Malaysia
- Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - N van der Velde
- Section of Geriatric Medicine, Department of Internal Medicine, Amsterdam Public Health, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Joe Verghese
- Institute for Aging Research, Department of Medicine, Albert Einstein College of Medicine, Bronx, New York
- Department of Neurology, Albert Einstein College of Medicine, Bronx, New York
| | - Tahir Masud
- Department of Geriatric Medicine, Odense University Hospital, Odense, Denmark
- Geriatric Research Unit, Department of Clinical Research, University of Southern Denmark, Odense, Denmark
- Department of Geriatric Medicine, Nottingham University Hospitals NHS Trust, Nottingham, United Kingdom
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Schapira M, Calabró P, Montero-Odasso M, Osman A, Guajardo ME, Martínez B, Pollán J, Cámera L, Sassano M, Perman G. A multifactorial intervention to lower potentially inappropriate medication use in older adults in Argentina. Aging Clin Exp Res 2021; 33:3313-3320. [PMID: 32388838 DOI: 10.1007/s40520-020-01582-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 04/27/2020] [Indexed: 11/25/2022]
Abstract
BACKGROUND Adverse drug reactions are a common cause of potentially avoidable harm, particularly in older adults. AIMS To evaluate the feasibility and efficacy of a pilot multifactorial intervention to reduce potentially inappropriate medication (PIM) use in older adults. METHODS We conducted a phase 2, feasibility, open-label study in the ambulatory setting of an integrated healthcare network in Buenos Aires, Argentina. We recruited primary care physicians (PCPs) and measured PIM use in a sample of their patients (65 years or older). Educational workshops for PCPs were organized with the involvement of clinician champions. Practical deprescribing algorithms were designed based on Beers criteria. Automatic email alerts based on specific PIMs recorded in each patient's electronic health record were used as a reminder tool. PCPs were responsible for deprescribing decisions. We randomly sampled 879 patients taking PIMs from eight of the most commonly used drug classes at our institution and compared basal (6 months prior to the intervention) and final (12 months after) prevalence of PIM use using a test of proportions. RESULTS There was a significant reduction (p < 0.05) in all drug classes evaluated. Non-Steroidal Anti-Inflammatory Drugs (basal prevalence 5.92%; final 1.59%); benzodiazepines (10.13%; 6.94%); histamine antagonists (7.74%; 3.07%); opioids (2.16%; 1.25%); tricyclic antidepressants (8.08%; 4.10%); muscle relaxants (7.74%; 3.41%), anti-hypertensives (3.53%; 1.82%) and oxybutynin (2.96%; 1.82%). The absolute reduction in the overall prevalence was 8.5 percentage points (relative reduction of 51.4%). CONCLUSION This multifactorial intervention is feasible and effective in reducing the use of potentially inappropriate medication in all drug classes evaluated.
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Affiliation(s)
- Marcelo Schapira
- Hospital Italiano de Buenos Aires (Internal Medicine Service), Tte. Gral. Juan Domingo Perón 4190 (CP 1199ABB), Buenos Aires, Argentina
| | - Pablo Calabró
- Hospital Italiano de Buenos Aires (Internal Medicine Service), Tte. Gral. Juan Domingo Perón 4190 (CP 1199ABB), Buenos Aires, Argentina
| | - Manuel Montero-Odasso
- Geriatric Medicine, Schulich School of Medicine & Dentistry, The University of Western Ontario, London, ON, Canada
- Department of Epidemiology and Biostatistics, Schulich School of Medicine & Dentistry, The University of Western Ontario, London, ON, Canada
- Gait and Brain Lab, Parkwood Institute, Lawson Health Research Institute, London, ON, Canada
| | - Abdelhady Osman
- Department of Epidemiology and Biostatistics, Schulich School of Medicine & Dentistry, The University of Western Ontario, London, ON, Canada
- Gait and Brain Lab, Parkwood Institute, Lawson Health Research Institute, London, ON, Canada
| | - María Elena Guajardo
- Hospital Italiano de Buenos Aires (Internal Medicine Service), Tte. Gral. Juan Domingo Perón 4190 (CP 1199ABB), Buenos Aires, Argentina
| | - Bernardo Martínez
- Hospital Italiano de Buenos Aires (Internal Medicine Service), Tte. Gral. Juan Domingo Perón 4190 (CP 1199ABB), Buenos Aires, Argentina
| | - Javier Pollán
- Hospital Italiano de Buenos Aires (Internal Medicine Service), Tte. Gral. Juan Domingo Perón 4190 (CP 1199ABB), Buenos Aires, Argentina
- Department of Public Health, Instituto Universitario Hospital Italiano, Buenos Aires, Argentina
| | - Luis Cámera
- Hospital Italiano de Buenos Aires (Internal Medicine Service), Tte. Gral. Juan Domingo Perón 4190 (CP 1199ABB), Buenos Aires, Argentina
| | - Miguel Sassano
- Hospital Italiano de Buenos Aires (Internal Medicine Service), Tte. Gral. Juan Domingo Perón 4190 (CP 1199ABB), Buenos Aires, Argentina
| | - Gastón Perman
- Hospital Italiano de Buenos Aires (Internal Medicine Service), Tte. Gral. Juan Domingo Perón 4190 (CP 1199ABB), Buenos Aires, Argentina.
- Department of Public Health, Instituto Universitario Hospital Italiano, Buenos Aires, Argentina.
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Aslam Joiya S, Farquhar J, Buck J, Osman A. 1585 The “6Pm Series” Addressing Medical Education for Final Year Medical Students During the Pandemic. Br J Surg 2021. [DOI: 10.1093/bjs/znab259.912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Aim
Free clinical teaching online delivered by NHS junior doctors to address a drop in face-to-face teaching.
Method
We created a block-based syllabus of topics that are commonly examined and created an SBA format series of online lectures. The lectures were delivered online and the lectures were carried out by NHS doctors. We delivered 30 continuous lectures in a 30-day period that covered a variety of topics. Each lecture lasted between 45 to 60 minutes and featured real time interactive mcqs which the students had a limited time to answer to simulate exam conditions. We also maintained a unique conference like format where the lecture provider would also be assisted by a ‘host' who would provide an environment that simulated a real-life lecture with a back-and-forth conversation. Lastly each session was reinforced with a feedback survey at the end which helped us improve our service but also provided key indicators on the needs of the audience.
Results
We were able to provide a series of lectures that on average had a viewership of 120-150 attendees per lecture and grew a social media following of 3500 people. Although the following on social media is not a full reflection of our reach. A good indication is our prescribing safety assessment series which attracted over 2000 people interested and 260 confirmed for one event.
Conclusions
We feel that the format we followed in delivering medical teaching provided a very effective format and we hope to continue this into the future.
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Affiliation(s)
| | - J Farquhar
- Yeovil District Hospital, Yeovil, United Kingdom
| | - J Buck
- Kings College London, London, United Kingdom
| | - A Osman
- Royal Cornwall Hospital, Truro, United Kingdom
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Imbabi T, Hassan A, Ahmed-Farid O, El-Garhy O, Sabeq I, Moustafa M, Mohammadein A, Hassan N, Osman A, Sitohy M. Supplementing rabbit diets with butylated hydroxyanisole affects oxidative stress, growth performance, and meat quality. Animal 2021; 15:100339. [PMID: 34425485 DOI: 10.1016/j.animal.2021.100339] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 07/18/2021] [Accepted: 07/22/2021] [Indexed: 11/19/2022] Open
Abstract
Butylated hydroxyanisole (BHA) is a synthetic antioxidant analogous of vitamin E. It is used as a preservative to prevent free radical-mediated oxidation in high-fat foods, and this study's objective was to investigate the effects of BHA on oxidative stress and apoptosis in addition to delineating its efficacy as a growth-promoting feed additive. 60 weaned male rabbits (V-line) were randomly divided into four equal groups: BHA0.0 (control), BHA50, BHA100, and BHA150, administered basal diets with 0.0, 50, 100, and 150 mg BHA/kg of feed for 60 days. Animals were examined for growth performance, markers of oxidative stress and apoptosis, and meat characteristics. Compared to the control group, rabbits receiving BHA-supplemented diets exhibited increases in BW and average daily gain (P < 0.01), where BHA50 and BHA100 groups showed increased muscle content of methionine aspartic acid, serine, and glutamine (P < 0.05). These two groups also exhibited elevated catalase and superoxide dismutase activities and diminished malondialdehyde levels in the liver. Butylated hydroxyanisole upregulated fatty acid synthase gene (FASN), especially in BHA100 animals. Bcl-2-associated X/B-celllymphoma-2 (Bax/Bcl-2) ratio significantly increased in animals receiving higher doses of BHA, and the weight of the liver significantly increased following BHA treatment. Supplementing growing rabbits with lower doses of dietary BHA may promote growth performance and meat quality via maintaining the redox balance. Hence, the 50-100 mg/kg may be recommended as a safe and still effective feed additive as well as an oxidative stress attenuator.
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Affiliation(s)
- T Imbabi
- Animal Production Department, Faculty of Agriculture, Benha University, Moshtohor 13736, Egypt
| | - A Hassan
- Department of Biotechnology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - O Ahmed-Farid
- Department of Physiology, National Organization for Drug Control and Research, Giza 12553, Egypt
| | - O El-Garhy
- Animal Production Department, Faculty of Agriculture, Benha University, Moshtohor 13736, Egypt
| | - I Sabeq
- Department of Food Hygiene, Faculty of Veterinary Medicine, Benha University, Moshtohor 13736, Egypt
| | - M Moustafa
- Genetics and Genetic Engineering Department, Faculty of Agriculture, Benha University, Moshtohor 13736, Egypt(1)
| | - A Mohammadein
- Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - N Hassan
- Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - A Osman
- Biochemistry Department, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt.
| | - M Sitohy
- Biochemistry Department, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
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Tan LK, Too CL, Nurul-Aain AF, Siti-Aisyah AA, Wahinuddin S, Osman A, Lau IS, Hussein H, Shahril NS, Gun SC, Mageswaren E, Mohamed Said MS, Mohd. Mokhtar A, Azmillah R, Othman M, Alfredsson L, Klareskog L, Shahnaz M, Padyukov L. OP0096 EXPOSURE TO DENGUE INFECTION DO NOT RAISE RISK OF RHEUMATOID ARTHRITIS: FINDINGS FROM THE MALAYSIAN EPIDEMIOLOGICAL INVESTIGATION OF RHEUMATOID ARTHRITIS (MYEIRA) CASE-CONTROL STUDY. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.1684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Dengue infection is associated with joints pain mimicking disease onset symptom of rheumatoid arthritis (RA). However, there is lack of epidemiological studies on exposure to dengue infection and risk of future RA.Objectives:We investigated the relationship between exposure to dengue infection and risk of developing different subsets of RA, defined by the presence of anti-citrullinated peptide antibody (ACPA) in the multi-ethnic Malaysian population.Methods:Serum samples from 1,235 RA cases (i.e. 516 Malay, 254 Chinese, 405 Indians and 60 others/mixed-ethnicity) and 1,624 epidemiological matched population-based controls (i.e. 1,023 Malay, 208 Chinese, 297 Indians and 96 others/mixed-ethnicity) were assayed for presence of dengue IgG antibody using World Health Organization recommended ELISA kits. Positive results of dengue IgG antibodies indicates previous exposure to dengue infection(s). We performed chi-square and Mann-Whitney U analysis to determine the association of ever-exposed dengue infection with ACPA-positive/ACPA-negative RA and to investigate the antibody frequency and levels among the studied populations.Results:We observed high occurrence of dengue IgG antibody in the overall RA cases (79.7%) and matched controls (77.3%), with no significant differences detected between the ACPA subsets of RA. Ethnicity stratification analysis revealed a decrease risk of developing ACPA-positive RA in the Indian patients with positive dengue IgG antibody (OR=0.59, 95% CI=0.37-0.94, p=0.03), and in particular patients with elevated level of dengue IgG antibody (OR=0.44, 95% CI=0.25-0.78, p<0.05). On the other hand, the significant decrease mean levels of dengue IgG antibody were observed in the ACPA-positive RA subset for all three major ethnic groups (i.e. Malay, p<0.0001, Chinese, p<0.01 and Indian<0.05) (Figure 1). No association was observed between presence of dengue IgG antibody and ACPA-negative RA subset.Figure 1.Comparison of mean dengue IgG antibody level between ever-exposed dengue infection RA cases, stratified by ACPA status. Comparison of median dengue IgG antibody level between the ever-exposed dengue infection ACPA-positive RA and normal controls in the four ethnic groups. The red line indicates the mean level of dengue IgG antibody levelConclusion:Our findings demonstrated that exposure to dengue infection do not increase the risk of developing future RA in the multi-ethnic Malaysian population. The inverse associations observed in the Indian ethnic group are in line with the other studies investigating exposure to viral infection and risk of RA.References:[1]Sherina et al (2017) Low levels of antibodies against common viruses associate with anti-citrullinated protein antibody-positive rheumatoid arthritis; implications for disease aetiology. Arthritis Research & Therapy 2017, 19:2169[2]Gissel García et. al. (2011) Long-term persistence of clinical symptoms in dengue-infected persons and its association with immunological disorders. International Journal of Infectious Diseases 15 (2011) e38–e43Acknowledgements:The authors would like to thank the Director General of Health, Ministry of Health Malaysia for supporting this study. The authors are also indebted to participants for their kind participation. This study was financially supported by the Ministry of Health, Malaysia (JPP-IMR 17-025) and the short-term research grant by UniKL RCMP (str16037).Disclosure of Interests:None declared
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23
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Mahran SA, Mohamed AAA, Nigm DA, Rahma MZAA, Abd-Elsalam S, Hamoud H, Hamdy M, Risha MI, Hamdy A, Abdelkareem MM, Ghanem S, Hanafy M, Moshrif A, Fehr A, ElNouby FH, Osman A, Hassanien MM. Subclinical hepatitis C virus infection in Egyptian patients with rheumatic diseases: a multi-center study. Egypt Rheumatol Rehabil 2020. [DOI: 10.1186/s43166-020-00014-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Abstract
Background
Hepatitis C virus (HCV) infection is highly prevalent in Egypt. It was found to be 7.0% in a study done in 2015. There are some studies on the prevalence of HCV in rheumatoid arthritis, but to our knowledge, no previous study was done to detect it in other rheumatologic diseases. This study aims at detecting the prevalence of subclinical HCV infection in Egyptian patients with different rheumatic diseases. In the current study, eight hundred and three patients with different rheumatic diseases collected from five—geographically different—Egyptian rheumatology departments were studied. Patients with known current or previous HCV infection were excluded from the study. Screening for the positive anti-HCV antibodies was done for all patients. Screening for the presence of HCV ribonucleic acid (RNA) was done in patients with positive serology by reverse transcriptase-polymerase chain reaction.
Results
In the studied population, 675 (84.1%) patients were women. The mean age [± SD] was 44.2 [± 12.9] years. Hepatitis C antibody positivity was found in 73 (9.1%) of the patients, while 67 (8.3%) were having positive HCV-RNA quantitative PCR tests. The highest prevalence of seropositive HCV was found in drug-induced vasculitis (DIV) and cryo-vasculitis (100%), while in RA, HCV antibodies and PCR were found to be positive in 9.1% and 8.3% of patients, respectively.
Conclusions
Detection of the presence of HCV infection in 9.1 % of the studied middle-aged Egyptian patients with rheumatologic conditions points to the importance of screening for HCV in such population for early detection and intervention especially for those patients that are planned to start biologic therapy.
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Mohamed S, Osman A, Patel A, Mazhar K, Srinivasan L, Balacumaraswami L. Delayed cardiac tamponade following blunt chest trauma due to disruption of fourth costal cartilage with posterior dislocation. Trauma Case Rep 2020; 29:100340. [PMID: 32793793 PMCID: PMC7415922 DOI: 10.1016/j.tcr.2020.100340] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/27/2020] [Indexed: 11/20/2022] Open
Abstract
Cardiac tamponade is a recognised sequelae of non-penetrating and penetrating chest trauma. Delayed cardiac tamponade has been described following blunt chest trauma. We present a 29 year-old gentleman who had initially presented to peripheral district general hospital following direct blunt chest wall trauma. His initial trauma CT demonstrated a small mediastinal haematoma and large left haemopneumothorax and disruption/dislocation of the costal cartilage. He initially underwent a thoracoscopic procedure uneventfully. He then had worsening chest radiograph appearances with enlarging cardiac contours. Transthoracic echocardiography confirmed cardiac tamponade. He underwent creation of a pericardial window and excision of the protruding fourth costal cartilage.
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Affiliation(s)
- S Mohamed
- Department of Cardiothoracic Surgery, Royal Stoke University Hospital, Stoke On Trent, United Kingdom
| | - A Osman
- Department of Cardiothoracic Surgery, Royal Stoke University Hospital, Stoke On Trent, United Kingdom
| | - A Patel
- Department of Cardiothoracic Surgery, Royal Stoke University Hospital, Stoke On Trent, United Kingdom.,Institute of Immunology and Immunotherapy, University of Birmingham, Vincent Drive, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - K Mazhar
- Department of Cardiothoracic Surgery, Royal Stoke University Hospital, Stoke On Trent, United Kingdom
| | - L Srinivasan
- Department of Cardiothoracic Surgery, Royal Stoke University Hospital, Stoke On Trent, United Kingdom
| | - L Balacumaraswami
- Department of Cardiothoracic Surgery, Royal Stoke University Hospital, Stoke On Trent, United Kingdom
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Grande J, Osman M, De Lorenzo S, Vrieze A, Osman A, Johnson R, Lien K. SAT-177 KLF11 DEFICIENCY EXACERBATES RENAL INJURY IN EXPERIMENTAL UNILATERAL URETERIC OBSTRUCTION. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Sobeih MM, El-Shahat MF, Osman A, Zaid MA, Nassar MY. Glauconite clay-functionalized chitosan nanocomposites for efficient adsorptive removal of fluoride ions from polluted aqueous solutions. RSC Adv 2020; 10:25567-25585. [PMID: 35518600 PMCID: PMC9055320 DOI: 10.1039/d0ra02340j] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 06/25/2020] [Indexed: 11/21/2022] Open
Abstract
We herein have developed a mild approach for the fabrication of glauconite clay (G)-modified chitosan (CS) nanocomposites by the combination of a simple blending and crosslinking method. The chitosan was modified with ethylenediaminetetraacetic acid (EDTA), glutaraldehyde (GL), sodium dodecyl sulfate (SDS), and cetyltrimethyl ammonium bromide (CTAB). The as-prepared composites were identified using Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), nitrogen physical adsorption (BET), atomic absorption spectrophotometry (AA), and thermal gravimetric analysis (TGA). The adsorption activities of the as-prepared materials were assessed for the removal of fluoride ions from aqueous media using a batch technique. Raw glauconite (G), GL-CS/G, SDS-CS/G, EDTA-GL-CS/G, and CTAB-CS/G adsorbents displayed maximum adsorption capacity values of 1.15, 4.31, 4.55, 6.90, and 9.03 mg g−1, respectively. The adsorption results were well described by employing the pseudo-second-order kinetic and Langmuir isotherm models. The estimated thermodynamic constants indicated that the F− ion adsorption was a spontaneous, physisorption process. Furthermore, the modified chitosan adsorbents are good candidates for the adsorptive elimination of F− ions from aqueous solutions, according to their reusability, high stability, good adsorption capacity, and applicability for actual field water samples. We herein have developed a mild approach for the fabrication of glauconite clay (G)-modified chitosan (CS) nanocomposites by the combination of a simple blending and crosslinking method.![]()
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Affiliation(s)
- Marwa M. Sobeih
- Chemistry Department
- Faculty of Science
- Ain Shams University
- Cairo
- Egypt
| | - M. F. El-Shahat
- Chemistry Department
- Faculty of Science
- Ain Shams University
- Cairo
- Egypt
| | - A. Osman
- Geology Department
- Faculty of Science
- Ain Shams University
- Cairo
- Egypt
| | - M. A. Zaid
- Abu-Zaabal Company for Fertilizer and Chemical Company (AZFC)
- EL-Qalyubia
- Egypt
| | - Mostafa Y. Nassar
- Chemistry Department
- Faculty of Science
- Benha University
- Benha 13815
- Egypt
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Abdel-Hamid M, Osman A, El-Hadary A, Romeih E, Sitohy M, Li L. Hepatoprotective action of papain-hydrolyzed buffalo milk protein on carbon tetrachloride oxidative stressed albino rats. J Dairy Sci 2019; 103:1884-1893. [PMID: 31837790 DOI: 10.3168/jds.2019-17355] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 10/11/2019] [Indexed: 01/10/2023]
Abstract
Buffalo skim milk retentate was hydrolyzed with papain for 4 h (enzyme:substrate, 1:200), resulting in a retentate hydrolysate (RH) with a degree of hydrolysis of 23%. We then investigated the potential hepatoprotective activity of RH at 250 and 500 mg/kg of body weight per day on carbon tetrachloride (CCl4)-induced oxidative stress in albino rats. Liver biomarkers (alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase, and lactate dehydrogenase), kidney biomarkers (urea, creatinine), and serum lipid profile (total lipids and triglycerides) were measured, in addition to histopathological status. Injection of CCl4 significantly increased all liver and kidney biomarkers compared with the negative control. In contrast, CCl4 injection significantly reduced hepatic antioxidant enzyme activities; that is, glutathione peroxidase and superoxide dismutase. Oral administration of RH for 28 d effectively maintained a physiologically normal range of liver and kidney biomarkers compared with the positive control. Furthermore, RH administration significantly increased activities of glutathione peroxidase and superoxide dismutase. Histopathological sections of CCl4-stressed rats treated with RH were different from that of the positive control and were similar to those of the negative control, in a concentration-dependent manner. Our results demonstrated the antihepatotoxic activities of buffalo milk RH and demonstrated that the higher RH concentration (500 mg/kg of body weight per day) could maintain the healthy biological status of the CCl4-injected rats.
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Affiliation(s)
- M Abdel-Hamid
- Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning 530001, China; Dairy Science Department, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
| | - A Osman
- Biochemistry Department, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
| | - A El-Hadary
- Biochemistry Department, Faculty of Agriculture, Banha University, Banha 13736, Egypt
| | - E Romeih
- Dairy Science Department, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
| | - M Sitohy
- Biochemistry Department, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
| | - L Li
- Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning 530001, China.
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Tong B, Rollo C, Carter S, Carberry J, Martins R, Osman A, Eckert D. An investigation into the differences in the phenotypic causes of obstructive sleep apnoea in obese versus non-obese people. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.1084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Viljoen CA, Sliwa K, Azibani F, Johnson MR, Baard J, Osman A, Briton O, Ntsekhe M, Anthony J, Chin A. P2533Prospective randomized study on implanted cardiac rhythm recorders in pregnant women with symptomatic arrhythmia and/or structural heart disease. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Cardiac arrhythmia is an important cause of maternal morbidity and mortality in pregnancy, but is difficult to diagnose.
Purpose
The aim of this single-centre, prospective, randomized pilot study was to compare the implantable loop recorder (ILR) with standard assessment of arrhythmia (12-lead ECG; 24-hour Holter ECG) in terms of acceptability, detection of arrhythmias and impact on outcome in pregnant women with symptomatic arrhythmias and/or structural heart disease (SHD).
Methods
The study recruited 40 consecutive patients from a weekly, dedicated cardiac obstetric clinic. Inclusion criteria: symptoms of arrhythmia and/or having SHD at risk of arrhythmia. Patients were randomized to either standard care (SC) or standard care plus ILR (SC-ILR). ILR recordings were read at the monthly visits and/or when presenting with symptoms.
Results
There were no demographic differences between the study groups. Seventeen patients consented to ILR insertion, all of whom found the procedure acceptable. No arrhythmias were recorded by the 12-lead ECGs. Holter monitoring detected arrhythmias in 10 of 23 patients (43%) from the SC group. In the SC-ILR group, 8 of 17 patients (47%) had arrhythmias detected by Holter, whereas 13 of 17 patients (76%) patients had arrhythmias detected by ILR (p=0.157). One of 4 patients with supraventricular tachycardia, 2 of 3 patients with premature ventricular complexes and 2 patients with paroxysmal atrial fibrillation (AF) recorded by ILR did not have the arrhythmias detected by Holter monitoring (Figure 1A shows a scatter plot of the variable R-R intervals seen in AF and 1B a rhythm strip of AF with irregular RR intervals and the absence of P waves, both downloaded from the ILR). Four of these 5 patients (80%) had a change in management as a direct result of their ILR recordings. There were no maternal deaths up to 42 days postpartum in either of the study groups. Nine babies were born with a low birthweight (<2500g), 5 stillbirth/neonatal deaths and 1 pregnancy termination occurred (5 in the Holter group and 1 in ILR group, p=0.37).
Figure 1
Conclusion(s)
This study suggests that an ILR is an acceptable diagnostic modality in pregnant women with a suspected or at risk of arrhythmia. The ILR increased the diagnostic yield to detect arrhythmias that were not detected by routine ECG and Holter monitoring which led to a change in management in the SC-ILR group and was associated with better maternal and neonatal outcomes. The impact of ILR monitoring should be further assessed in larger studies with longer follow up.
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Affiliation(s)
- C A Viljoen
- University of Cape Town, Division of Cardiology, Cape Town, South Africa
| | - K Sliwa
- University of Cape Town, Hatter Institute for Cardiovascular Research in Africa, Cape Town, South Africa
| | - F Azibani
- University of Cape Town, Hatter Institute for Cardiovascular Research in Africa, Cape Town, South Africa
| | - M R Johnson
- Imperial College London, London, United Kingdom
| | - J Baard
- University of Cape Town, Hatter Institute for Cardiovascular Research in Africa, Cape Town, South Africa
| | - A Osman
- University of Cape Town, Division of Obstetrics and Gynaecology, Cape Town, South Africa
| | - O Briton
- University of Cape Town, Hatter Institute for Cardiovascular Research in Africa, Cape Town, South Africa
| | - M Ntsekhe
- University of Cape Town, Division of Cardiology, Cape Town, South Africa
| | - J Anthony
- University of Cape Town, Division of Obstetrics and Gynaecology, Cape Town, South Africa
| | - A Chin
- University of Cape Town, Division of Cardiology, Cape Town, South Africa
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Badawy AA, Othman G, Elabbasy LM, Abd Elsalam M, Shrief R, Fahmy EM, Kamel NM, Osman A, Zaki ME. IL-6 -572G/C and -174G/C polymorphisms association with hepatitis C virus-induced hepatocellular carcinoma. Br J Biomed Sci 2019; 76:201-204. [PMID: 31314698 DOI: 10.1080/09674845.2019.1642562] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- A A Badawy
- Medical Biochemistry Department, Mansoura University, Mansoura, Egypt
| | - G Othman
- Medical Biochemistry Department, Mansoura University, Mansoura, Egypt
| | - L M Elabbasy
- Medical Biochemistry Department, Mansoura University, Mansoura, Egypt
| | - M Abd Elsalam
- Internal Medicine Department, Nephrology and Dialysis Unit, Mansoura University, Mansoura, Egypt
| | - R Shrief
- Medical Microbiology and Immunology Department, Mansoura University, Mansoura, Egypt
| | - E M Fahmy
- Medical Microbiology and Immunology Department, Aswan University, Aswan, Egypt
| | - N M Kamel
- Clinical Pathology Department, Faculty of Medicine, Beni-Suef University, Beni-Suef, Egypt
| | - A Osman
- Clinical Pathology Department, Faculty of Medicine, Aswan University, Aswan, Egypt
| | - M E Zaki
- Clinical Pathology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt
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Grande J, Osman M, Osman A, Taha H. SAT-185 FEATURES OF ATHEROSCLEROTIC RENAL ARTERY STENOSIS: AN AUTOPSY BASED STUDY. Kidney Int Rep 2019. [DOI: 10.1016/j.ekir.2019.05.219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Romieh S, Gipril M, Osman A, Elmozy W, Abdul Aziz A, Ramdan F, Nabil SH, Amin A. P89Cyanotic adult with atrial septal defect (ASD) is not an equivalent to an Eisenmenger syndrome. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez110.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- S Romieh
- Aswan Heart Centre, Aswan, Egypt
| | - M Gipril
- Aswan Heart Centre, Aswan, Egypt
| | - A Osman
- Aswan Heart Centre, Aswan, Egypt
| | - W Elmozy
- Aswan Heart Centre, Aswan, Egypt
| | | | - F Ramdan
- Aswan Heart Centre, Aswan, Egypt
| | | | - A Amin
- Aswan Heart Centre, Aswan, Egypt
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Alhasan KA, Alherbish A, Osman A, Kari JA, Almojalli H. Successful Treatment of Recurrent Focal Segmental Glomerulosclerosis After Transplantation in Children: A Single-Center Experience. Transplant Proc 2019; 51:517-521. [PMID: 30879580 DOI: 10.1016/j.transproceed.2019.01.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE We aim to report our experience managing cases of recurrent focal segmental glomerulosclerosis (FSGS) in a group of pediatric renal transplant recipients. METHODS This study was a retrospective chart review of pediatric patients who had their first kidney transplant at King Faisal Specialist Hospital & Research Center between 2014 and 2016. RESULTS We reviewed the files of 6 patients, 3 of whom were male. The median age of the children was 2.75 years (range, 2-4 years) at disease onset, with an average time of progression to end-stage renal disease of 19 months (range, 8-30 months). Five of the patients received a living related donor transplant, and 1 received a living nonrelated donor transplant. Patients had FSGS recurrence at varying intervals (1 to 3 days) post transplant. All cases had plasmapheresis prior to receiving abatacept or rituximab. The therapeutic strategy in 4 patients involved switching tacrolimus to cyclosporine. A complete response was observed in 5 of the 6 patients (83.3%), and treatment was well tolerated in 5 patients. Patient 1 had severe oliguria and required intermittent hemodialysis during the first 3 weeks post transplant. He showed minimal response to the therapeutic plasma exchange and rituximab and was subsequently treated with abatacept. However, he died 8 months post transplant of pneumonia and sepsis. CONCLUSION Rituximab and switching tacrolimus to cyclosporine, in conjunction with plasmapheresis, appeared to be effective and safe in children with recurrent FSGS. Conversely, abatacept did not appear to provide clinical benefit.
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Affiliation(s)
- K A Alhasan
- Department of Pediatrics, College of Medicine, King Saud University, King Khalid University Hospital, Riyadh, Saudi Arabia; Organ Transplant Center, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia.
| | - A Alherbish
- Department of Pediatrics, College of Medicine, King Saud University, King Khalid University Hospital, Riyadh, Saudi Arabia; Organ Transplant Center, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia
| | - A Osman
- Department of Pediatrics, College of Medicine, King Saud University, King Khalid University Hospital, Riyadh, Saudi Arabia
| | - J A Kari
- Pediatric Nephrology Center of Excellence and Department of Pediatrics, King Abdulaziz University, Jeddah, Saudi Arabia
| | - H Almojalli
- Organ Transplant Center, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia
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Osman A, Nedeljkovic M, Soler Penades J, Wu Y, Qu Z, Khokhar AZ, Debnath K, Mashanovich GZ. Suspended low-loss germanium waveguides for the longwave infrared. Opt Lett 2018; 43:5997-6000. [PMID: 30547989 DOI: 10.1364/ol.43.005997] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 10/30/2018] [Indexed: 06/09/2023]
Abstract
Germanium is a material of high interest for mid-infrared (MIR) integrated photonics due to its complementary metal-oxide-semiconductor (CMOS) compatibility and its wide transparency window covering the 2-15 μm spectral region exceeding the 4 and 8 μm limit of the silicon-on-insulator platform and Si material, respectively. In this Letter, we report suspended germanium waveguides operating at a wavelength of 7.67 μm with a propagation loss of 2.6±0.3 dB/cm. To the best of our knowledge, this is the first demonstration of low-loss suspended germanium waveguides at such a long wavelength. Suspension of the waveguide is achieved by defining holes alongside the core providing access to the buried oxide layer and the underlying Si layer so that they can be wet etched using hydrofluoric acid and tetramethylammonium hydroxide, respectively. Our MIR waveguides create a new path toward long wavelength sensing in the fingerprint region.
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Heenkenda M, Łysiak M, Åkesson L, Milos P, Mudaisi M, Bratthäll C, Strandeus M, Söderkvist P, Uppugunduri S, Osman A, Malmström A. P01.152 Evaluation of Factor V Leiden variant as risk a factor for venous thromboembolism in glioblastoma patients. Neuro Oncol 2018. [DOI: 10.1093/neuonc/noy139.194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- M Heenkenda
- Department of Clinical Chemistry and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - M Łysiak
- Department of Clinical and Experimental Medicine/ Division of Cell Biology, Linköping University, Linköping, Sweden
| | - L Åkesson
- Regional Cancer Center South East Sweden and Dept of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - P Milos
- Department of Neurosurgery, Linköping University, Linköping, Sweden
| | - M Mudaisi
- Department of Oncology, Linköping University, Linköping, Sweden
| | - C Bratthäll
- Dept of Oncology, District Hospital, Kalmar, Sweden
| | - M Strandeus
- Dept of Oncology, Ryhov Hospital, Jönköping, Sweden
| | - P Söderkvist
- Department of Clinical and Experimental Medicine/ Division of Cell Biology, Linköping University, Linköping, Sweden
| | - S Uppugunduri
- Regional Cancer Center South East Sweden, Linköping, Sweden
| | - A Osman
- Department of Clinical Chemistry and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - A Malmström
- Department of Clinical and Experimental Medicine/ Division of Cell Biology and Department of Advanced Home Care, Linköping University, Linköping, Sweden
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37
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Azibani F, Libhaber E, Baard J, Osman A, Zuhlke L, Lachmann A, Chin A, Ntsekhe M, Soma-Pillay P, Johnson MR, Roos-Hesselink J, Anthony J, Sliwa K. P1563Reducing late maternal death due to cardiovascular disease by targeted interventions. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- F Azibani
- University of Cape Town, Medicine, Cape Town, South Africa
| | - E Libhaber
- University of the Witwatersrand, Soweto Cardiovascular Research Unit, Johannesburg, South Africa
| | - J Baard
- University of Cape Town, Medicine, Cape Town, South Africa
| | - A Osman
- University of Cape Town, Obstetrics & Gynaecology, Cape Town, South Africa
| | - L Zuhlke
- University of Cape Town, Department of Paediatrics, Cape Town, South Africa
| | - A Lachmann
- University of Cape Town, Obstetrics & Gynaecology, Cape Town, South Africa
| | - A Chin
- University of Cape Town, Cardiology, Cape Town, South Africa
| | - M Ntsekhe
- University of Cape Town, Cardiology, Cape Town, South Africa
| | - P Soma-Pillay
- University of Pretoria, 6 Department of Obstetrics and Gynecology, Maternal and Foetal Medicine, Pretoria, South Africa
| | - M R Johnson
- Imperial College London, London, United Kingdom
| | - J Roos-Hesselink
- Erasmus Medical Center, Department of Cardiology, Rotterdam, Netherlands
| | - J Anthony
- University of Cape Town, Obstetrics & Gynaecology, Cape Town, South Africa
| | - K Sliwa
- University of Cape Town, Medicine, Cape Town, South Africa
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Kariv S, Azibani F, Baard J, Osman A, Soma-Pillay P, Anthony J, Sliwa K. Haemorrhage and other complications in pregnant women on anticoagulation for mechanical heart valves: a prospective observational cohort study. Cardiovasc J Afr 2018; 29:289-295. [PMID: 30059130 DOI: 10.5830/cvja-2018-029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Accepted: 05/22/2018] [Indexed: 11/06/2022] Open
Abstract
OBJECTIVE To document maternal and foetal morbidity and mortality in anticoagulated, pregnant patients with mechanical heart valves until 42 days postpartum. METHODS In a tertiary single-centre, prospective cohort, 178 consecutive patients at the cardiac-obstetric clinic were screened for warfarin use between 1 July 2010 and 31 December 2015. Of 33 pregnancies identified, 29 were included. Patients received intravenous unfractionated heparin from six to 12 weeks' gestation and peripartum, and warfarin from 12 to 36 weeks. Maternal outcomes including death, major haemorrhage and thrombosis, and foetal outcomes were documented. RESULTS There were two maternal deaths, five returns to theatre post-delivery, eight patients transfused, six major haemorrhages, one case of infective endocarditis and three ischaemic strokes. Ten pregnancies had poor foetal outcomes (six miscarriages, three terminations, one early neonatal death). Twenty patients required more than 30 days' hospitalisation, and 15 required three or more admissions. HIV positivity was associated with surgical delivery (p = 0.0017). CONCLUSION Complication rates were high despite centralised care.
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Affiliation(s)
- S Kariv
- Department of Medicine, Groote Schuur Hospital and University of Cape Town, Cape Town, South Africa.
| | - F Azibani
- The Cardiac Clinic, Department of Medicine, Groote Schuur Hospital and University of Cape Town; Hatter Institute for Cardiovascular Research in Africa, Department of Medicine, Faculty of Health Sciences and IDM, University of Cape Town, Cape Town, South Africa
| | - J Baard
- The Cardiac Clinic, Department of Medicine, Groote Schuur Hospital and University of Cape Town; Hatter Institute for Cardiovascular Research in Africa, Department of Medicine, Faculty of Health Sciences and IDM, University of Cape Town, Cape Town, South Africa
| | - A Osman
- Department of Obstetrics and Gynaecology, Groote Schuur Hospital and University of Cape Town, Cape Town, South Africa
| | - P Soma-Pillay
- Department of Obstetrics and Gynaecology, Steve Biko Academic Hospital and University of Pretoria, Pretoria, South Africa
| | - J Anthony
- Department of Obstetrics and Gynaecology, Groote Schuur Hospital and University of Cape Town, Cape Town, South Africa
| | - K Sliwa
- The Cardiac Clinic, Department of Medicine, Groote Schuur Hospital and University of Cape Town; Hatter Institute for Cardiovascular Research in Africa, Department of Medicine, Faculty of Health Sciences and IDM, University of Cape Town, Cape Town, South Africa
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Daoud N, Gao M, Osman A, Muntaner C. 3.2-O8Discrimination and mental health among Palestinian minority men in Israel. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky047.092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- N Daoud
- Ben-Gurion University of the Negev, Israel
| | - M Gao
- Critical Care Services, Canada
| | - A Osman
- Center for Regulatory Research on Tobacco Communication
- Lineberger Comprehensive Cancer Center University of North Carolina, Chapel Hill, United States
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Ing T, Patel B, Patel J, Patel N, Yu A, Osman A, Zhou F. Effects of a pH 7.4, lactate-based and a pH 7.4, bicarbonate-based peritoneal dialysis solutions on neutrophil superoxide generation. Int J Artif Organs 2018. [DOI: 10.1177/039139889601901204] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Neutrophil superoxide formation was similar when cells were incubated in self-made, non-autoclaved, pH 7.4, lactate-based peritoneal dialysis solutions or in their self-made, non-autoclaved, pH 7.4, bicarbonate-based counterparts. On the other hand, commercially available, autoclaved, pH 7.4, lactate-based peritoneal dialysis solutions resulted in inhibition of superoxide production when compared to their self-made, non-autoclaved, pH 7.4, lactate-based or bicarbonate-based counterparts. The cause for this inhibition of superoxide generation is at present unknown.
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Affiliation(s)
- T.S. Ing
- Departments of Medicine, Loyola University Chicago, Stritch School of Medicine, Maywood
- Veterans Affairs Hospital, Hines, Illinois - USA
| | - B.P. Patel
- Veterans Affairs Hospital, Hines, Illinois - USA
| | - J.A. Patel
- Veterans Affairs Hospital, Hines, Illinois - USA
| | - N.K. Patel
- Veterans Affairs Hospital, Hines, Illinois - USA
| | - A.W. Yu
- Chinese University of Hong Kong, School of Medicine, Hong Kong
| | - A. Osman
- Veterans Affairs Hospital, Hines, Illinois - USA
| | - F.Q. Zhou
- Veterans Affairs Hospital, Hines, Illinois - USA
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41
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Penadés JS, Sánchez-Postigo A, Nedeljkovic M, Ortega-Moñux A, Wangüemert-Pérez JG, Xu Y, Halir R, Qu Z, Khokhar AZ, Osman A, Cao W, Littlejohns CG, Cheben P, Molina-Fernández I, Mashanovich GZ. Suspended silicon waveguides for long-wave infrared wavelengths. Opt Lett 2018; 43:795-798. [PMID: 29443996 DOI: 10.1364/ol.43.000795] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 12/14/2017] [Indexed: 06/08/2023]
Abstract
In this Letter, we report suspended silicon waveguides operating at a wavelength of 7.67 μm with a propagation loss of 3.1±0.3 dB/cm. To our knowledge, this is the first demonstration of low-loss silicon waveguides at such a long wavelength, with loss comparable to other platforms that use more exotic materials. The suspended Si waveguide core is supported by a sub-wavelength grating that provides lateral optical confinement while also allowing access to the buried oxide layer so that it can be wet etched using hydrofluoric acid. We also demonstrate low-loss waveguide bends and s-bends.
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Abou-Zied K, Abd El-All A, Osman A. Response of Sugar Beet Yield and Water Use Efficiency to Deficit Irrigation and Weed Competition under Drip Irrigation System. Journal of Plant Production 2017; 8:1295-1302. [DOI: 10.21608/jpp.2017.41983] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Osman M, Osman A. Effect of the 2008 economic crisis on the cardiovascular mortality of the Irish population: an ecological 12-year study of a heart-broken Celtic Tiger. Ir Med J 2017; 110:597. [PMID: 29341509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Ireland has endured a substantial financial crisis in 2008 and we sought to explore the effect of economic recession on Irish cardiovascular mortality. We found an increase by 17.2% in CVA-deaths during the financial crisis years (95% CI 11.1% to 23.6%). In males, we found a notable rise in the annual IHD rate by 7.56% (95% CI 4.73% to 10.46%), in annual MI rate by 2.96% (95% CI 0.16% to 5.84%), and in annual CVA death rate by 20.07% (95% CI 16.13% to 24.14%). In females our findings indicated an increased rate of CVA-related deaths during the economic crisis by 15.54% (95% CI 6.67% to 25.16%). Irish CVA-related deaths increased during the economic crisis for males and females alike. Male IHD-related deaths have also risen indicating a potential differential effect for financial hardships on male gender mortality.
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Affiliation(s)
- M Osman
- Department of Psychiatry, Royal College of Surgeons in Ireland RCSI School of Medicine, Dublin 2, Ireland
| | - A Osman
- King Fahad military medical complex Hospital, Dhahran, Saudi Arabia
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Baard J, Osman A, Dowling W, Azibani F, Anthony J, Sliwa K. P1498The effect of beta-blockers on fetal birth weight in pregnancies complicated with structural heart disease. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- J. Baard
- Hatter Institute of Cardiovascular Research in Africa, Medicine, Cape Town, South Africa
| | - A. Osman
- University of Cape Town, Department of Obstetrics and Gynaecology, Cape Town, South Africa
| | - W. Dowling
- Hatter Institute of Cardiovascular Research in Africa, Medicine, Cape Town, South Africa
| | - F. Azibani
- Hatter Institute of Cardiovascular Research in Africa, Medicine, Cape Town, South Africa
| | - J. Anthony
- University of Cape Town, Department of Obstetrics and Gynaecology, Cape Town, South Africa
| | - K. Sliwa
- Hatter Institute of Cardiovascular Research in Africa, Medicine, Cape Town, South Africa
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El Sawaf BM, Helmy N, Kamal HA, Osman A, Shehata M. Soil analysis of breeding sites ofPhlebotomus langeroniNitzulescu andPhlebotomus papatasi(Scopoli) in El Agamy, Egypt. ACTA ACUST UNITED AC 2016. [DOI: 10.1051/parasite/1991663134] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Osman A, Pundir J, Elsherbini M, Dave S, El-Toukhy T, Khalaf Y. The effect of intrauterine HCG injection on IVF outcome: a systematic review and meta-analysis. Reprod Biomed Online 2016; 33:350-9. [PMID: 27317131 DOI: 10.1016/j.rbmo.2016.05.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Revised: 05/25/2016] [Accepted: 05/26/2016] [Indexed: 12/23/2022]
Abstract
In this systematic review and meta-analysis, the effect of intrauterine HCG infusion before embryo transfer on IVF outcomes (live birth rate, clinical pregnancy rate and spontaneous aboretion rate) was investigated. Searches were conducted on MEDLINE, EMBASE and The Cochrane Library. Randomized studies in women undergoing IVF and intracytoplasmic sperm injection comparing intrauterine HCG administration at embryo transfer compared with no intrauterine HCG were eligible for inclusion. Eight randomized controlled trials were eligible for inclusion in the meta-analysis. A total of 3087 women undergoing IVF and intracytoplasmic sperm injection cycles were enrolled (intrauterine HCG group: n = 1614; control group: n = 1473). No significant difference was found in the live birth rate (RR 1.13; 95% CI 0.84 to 1.53) and spontaneous abortion rate (RR 1.00, 95% CI 0.74 to 1.34) between women who received intrauterine HCG and those who did not receive HCG. Although this review was extensive and included randomized controlled trials, no significant heterogeneity was found, and the overall included numbers are relatively small. In conclusion the current evidence does not support the use of intrauterine HCG administration before embryo transfer. Well-designed multicentre trials are needed to provide robust evidence.
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Affiliation(s)
- A Osman
- Assisted Conception Unit, Guys Hospital, Great Maze Pond SE1 9RT, UK; Faculty of Medicine, Cairo University, Al-Saray Street, El Manial Cairo 11956, Egypt.
| | - J Pundir
- Centre of reproductive medicine, St Bartholomew's Hospital, Bart's Health, London EC1A 7BE, UK
| | - M Elsherbini
- Faculty of Medicine, Cairo University, Al-Saray Street, El Manial Cairo 11956, Egypt
| | - S Dave
- Centre of reproductive medicine, St Bartholomew's Hospital, Bart's Health, London EC1A 7BE, UK
| | - T El-Toukhy
- Assisted Conception Unit, Guys Hospital, Great Maze Pond SE1 9RT, UK
| | - Y Khalaf
- Assisted Conception Unit, Guys Hospital, Great Maze Pond SE1 9RT, UK
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Osman A, Maalej N, Jayesh K, Abdel-Rahman W. SU-F-T-295: MLCs Performance and Patient-Specific IMRT QA Using Log File Analysis. Med Phys 2016. [DOI: 10.1118/1.4956480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Wardle A, Osman A, Falconer L, Howes B. Teaching anaesthetists the skills of communication. Br J Anaesth 2015; 115:321. [DOI: 10.1093/bja/aev242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Costea D, Hills A, Osman A, Thurlow J, Parajuli H, Suleiman S, Johannessen A, Partridge M. 25 Different subsets of carcinoma-associated fibroblasts promote oral carcinoma cell invasion by distinct mechanisms. Oral Oncol 2015. [DOI: 10.1016/j.oraloncology.2015.02.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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