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  • 1
    Online Resource
    Online Resource
    Accuracy of the Traditional COVID-19 Phone Triaging System and Phone Triage-Driven Deep Learning Model
    SAGE Publications ; 2022
    In:  Journal of Primary Care & Community Health Vol. 13 ( 2022-01), p. 215013192211135-
    Details
    In: Journal of Primary Care & Community Health, SAGE Publications, Vol. 13 ( 2022-01), p. 215013192211135-
    Abstract: During the COVID-19 pandemic, a quick and reliable phone-triage system is critical for early care and efficient distribution of hospital resources. The study aimed to assess the accuracy of the traditional phone-triage system and phone triage-driven deep learning model in the prediction of positive COVID-19 patients. Setting: This is a retrospective study conducted at the family medicine department, Cairo University. Methods: The study included a dataset of 943 suspected COVID-19 patients from the phone triage during the first wave of the pandemic. The accuracy of the phone triaging system was assessed. PCR-dependent and phone triage-driven deep learning model for automated classifications of natural human responses was conducted. Results: Based on the RT-PCR results, we found that myalgia, fever, and contact with a case with respiratory symptoms had the highest sensitivity among the symptoms/ risk factors that were asked during the phone calls (86.3%, 77.5%, and 75.1%, respectively). While immunodeficiency, smoking, and loss of smell or taste had the highest specificity (96.9%, 83.6%, and 74.0%, respectively). The positive predictive value (PPV) of phone triage was 48.4%. The classification accuracy achieved by the deep learning model was 66%, while the PPV was 70.5%. Conclusion: Phone triage and deep learning models are feasible and convenient tools for screening COVID-19 patients. Using the deep learning models for symptoms screening will help to provide the proper medical care as early as possible for those at a higher risk of developing severe illness paving the way for a more efficient allocation of the scanty health resources.
    Type of Medium: Online Resource
    ISSN: 2150-1319 , 2150-1327
    URL: Article
    DOI: 10.1177/21501319221113544
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
    detail.hit.zdb_id: 2550221-9
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  • 2
    Online Resource
    Online Resource
    Serum and Urinary Interleukin-6 in Assessment of Renal Activity in Egyptian Patients with Systemic Lupus Erythematosus
    SAGE Publications ; 2016
    In:  Clinical Medicine Insights: Arthritis and Musculoskeletal Disorders Vol. 9 ( 2016-01), p. CMAMD.S32269-
    Details
    In: Clinical Medicine Insights: Arthritis and Musculoskeletal Disorders, SAGE Publications, Vol. 9 ( 2016-01), p. CMAMD.S32269-
    Abstract: This study investigates whether serum and urinary interleukin-6 (IL-6) represent an early marker of kidney involvement and assesses the difference between them and renal biopsy in lupus nephritis (LN). Patients and Methods A total of 60 systemic lupus erythematosus (SLE) patients were compared to 20 healthy controls. Urinary and serum IL-6 were measured in both patients and controls. In addition, renal biopsy was done prior or shortly after urine and blood sampling; the results were classified according to the International Society of Nephrology/Renal Pathology Society classification of LN by recording the activity score and chronicity score for each sample. Results There was a significant higher level of urinary IL-6 in the SLE patients with biopsy-proven LN than in those without LN and those of the control group. However, no significant difference was reported between the three groups as regards serum IL-6. A strong positive correlation was found between urinary IL-6 and renal disease activity based on the renal SLE disease activity index (SLEDAI) score with no significant correlation regarding the extra renal SLEDAI. Urinary IL-6 was positively correlated with renal biopsy results and with its activity scores but weakly correlated with the chronicity scores. Conclusion Urinary IL-6 may provide a simple noninvasive potential marker of disease activity of renal involvement in adult patients with SLE.
    Type of Medium: Online Resource
    ISSN: 1179-5441 , 1179-5441
    URL: Article
    DOI: 10.4137/CMAMD.S32269
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2016
    detail.hit.zdb_id: 2590933-2
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  • 3
    Online Resource
    Online Resource
    Cardiac magnetic resonance imaging for assessment of mitral stenosis before and after percutaneous balloon valvuloplasty in comparison to two- and three-dimensional echocardiography
    SAGE Publications ; 2020
    In:  Acta Radiologica Vol. 61, No. 9 ( 2020-09), p. 1176-1185
    Details
    In: Acta Radiologica, SAGE Publications, Vol. 61, No. 9 ( 2020-09), p. 1176-1185
    Abstract: The experience with cardiac magnetic resonance (CMR) in mitral stenosis (MS) is limited in contrast to mitral regurgitation. Purpose To compare CMR versus 2D and 3D transthoracic (TTE) and 3D transesophgeal (TEE) echocardiography in assessment of rheumatic MS before and after percutaneous balloon mitral valvuloplasty (PBMV). Material and Methods Twenty consecutive symptomatic patients with MS were evaluated prospectively and independently by CMR, TTE, and TEE pre-PBMV, and by CMR and TTE post-PBMV. Mitral valve area (MVA) was assessed by CMR planimetry, TTE and TEE planimetry, and pressure half time (PHT). Further assessment included trans-mitral velocity, mitral regurgitation (MR), and left atrial (LA) volume. Results PBMV was successful in 18 patients and failed in two patients (one with MVA 〈 1.5 cm 2 , one developed severe MR). Pre-PBMV and MVA by CMR, 2D TTE, biplane, 3D TTE, 3D TEE, and PHT were 1.16, 1.16, 1.10, 1.02, 1.05, and 0.99 cm 2 , respectively. Post-PBMV, a significant increase in MVA was observed (2.15, 2.06, 2.07, 2.04, and 2.03 cm 2 , respectively). High agreement was observed between CMR and echocardiography before and after PBMV, except for PHT method. CMR significantly underestimated trans-mitral velocity and gradients compared to echocardiography (P 〈 0.001). Before PBMV, mild MR was observed in 11, 12, and 19 patients by 2D TTE, 3D TTE, and CMR. After PBMV, MR was observed in all patients (19 mild, one severe) by all modalities. Echocardiography significantly underestimated LA volume compared to CMR (P 〈 0.001). LA volume decreased significantly after PBMV (P 〈 0.001). Conclusion CMR provides comprehensive assessment of several parameters in MS patients before and after intervention. Agreement with echocardiography is acceptable.
    Type of Medium: Online Resource
    ISSN: 0284-1851 , 1600-0455
    URL: Article
    DOI: 10.1177/0284185119897368
    RVK:
    XA 10000
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2020
    detail.hit.zdb_id: 2024579-8
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  • 4
    Online Resource
    Online Resource
    Autosomal Recessive Bestrophinopathy Presenting With a Macular Hole Retinal Detachment
    SAGE Publications ; 2022
    In:  Journal of VitreoRetinal Diseases Vol. 6, No. 4 ( 2022-07), p. 312-315
    Details
    In: Journal of VitreoRetinal Diseases, SAGE Publications, Vol. 6, No. 4 ( 2022-07), p. 312-315
    Abstract: Purpose: To report a case of autosomal recessive bestrophinopathy (ARB) that presented with macular hole retinal detachment (MHRD). Methods: A case report. Results: A 31-year-old male patient presented with rapid deterioration of vision in the left eye. On fundus examination, bilateral retinal deposits in both eyes, which were brightly hyperautofluorescent, and an MHRD in the left eye could be detected. An electrooculogram demonstrated absent light rise with abnormal Arden’s ratio in both eyes. The patient was offered surgery for the MHRD but refused due to the guarded visual prognosis. Follow up of the patient after one year revealed progression of the retinal detachment. Genetic testing revealed a novel, homozygous missense mutation in the BEST1 gene, confirming the diagnosis of ARB. Conclusion: ARB can present with an MHRD. Counseling patients with inherited retinal dystrophies about the visual prognosis following surgical intervention is important.
    Type of Medium: Online Resource
    ISSN: 2474-1264 , 2474-1272
    URL: Article
    DOI: 10.1177/24741264221098631
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
    detail.hit.zdb_id: 2898183-2
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  • 5
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    Online Resource
    Compatibilization of NBR/SBR blends using amphiphilic montmorillonites : A dynamic mechanical thermal study
    SAGE Publications ; 2014
    In:  Journal of Elastomers & Plastics Vol. 46, No. 6 ( 2014-10), p. 514-526
    Details
    In: Journal of Elastomers & Plastics, SAGE Publications, Vol. 46, No. 6 ( 2014-10), p. 514-526
    Abstract: Sodium-montmorillonite (Mont-0) was partially/completely cation exchanged with appropriate amounts of cetyltrimethylammonium bromide to yield amphiphilic montmorillonites bearing different ratios of both hydrophilic and lipophilic segments. The lipophilicity/hydrophilicity range extended progressively up to the highly hydrophobic form (Mont-100), where all of the sodium cation content was replaced by the cetyltrimethylammonium cation. The produced amphiphilic forms can be arranged in the order of Mont-0  〉  Mont-25  〉  Mont-50  〉  Mont-75  〉  Mont-100, according to the decrease in hydrophilicity. Subsequently, the different montmorillonites were employed as reinforcing agents for acrylonitrile-butadiene rubber/styrene-butadiene rubber (50/50) rubber blend, which is known to be physically incompatible. We found from our previous reports that the mechanical properties of blends comprising a fixed loading of each montmorillonite form (20 phr) displayed remarkable improvements up to different levels indicating different compatibility influences between the rubber components by the inserted clays. In the current report, these results are intensively studied using dynamic mechanical thermal analysis and complemented by differential scanning calorimetry. Additionally, the network characteristics of the vulcanized rubber networks were determined for the neat blends (in absence of any clay) as well as for reinforced blends with different clay forms. Based on the obtained data, it could be concluded that the montmorillonite forms can bind both phases of the blend through interfacial interactions at the boundaries between the blend components but with different potentials. This effect was associated in the mean time by the hindrance of phase separation thus enhancing the compatibility. These findings were further supported using scanning electron microscopy, which confirmed that the compatibilization effect may have been achieved through lowering of the interfacial tension between the components.
    Type of Medium: Online Resource
    ISSN: 0095-2443 , 1530-8006
    URL: Article
    DOI: 10.1177/0095244313476507
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2014
    detail.hit.zdb_id: 2098535-6
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  • 6
    Online Resource
    Online Resource
    Telmisartan Self-Nanoemulsifying Drug Delivery System, Compared With Standard Telmisartan, More Effectively Improves Hepatic Fibrosis in Rats
    SAGE Publications ; 2020
    In:  Dose-Response Vol. 18, No. 4 ( 2020-10-01), p. 155932582098219-
    Details
    In: Dose-Response, SAGE Publications, Vol. 18, No. 4 ( 2020-10-01), p. 155932582098219-
    Abstract: This study was designed to examine effects of telmisartan; an angiotensin receptor blocker; self-nanoemulsifying drug delivery system (SNEDDS) in reversing already-established hepatic fibrosis. Method: Forty rats were given thioacetamide (200 mg/kg, intraperitoneally) twice/week for 8 weeks then divided into 5 groups (n = 8), PC and 4 treated groups. Treatments were given orally for another 2 months as follows: telmisartan low and high doses (TL and TH: 1.8 and 3.6 mg/kg/day) and telmisartan SNEDDS at the same doses (TLS and THS). At end of treatment, blood was obtained and liver was isolated. Results: Rats showed significant elevations of plasma ALT and AST and hepatic IL-6, TNF-α, and MDA, significant reductions of plasma albumin, hepatic GSH, and body weight, and hepatic histopathological damage. All treatments except for TL significantly reversed these thioacetamide-induced changes. THS group showed significant differences from all groups. Regarding ratio of free telmisartan concentration in hepatic homogenate to that of plasma, TH and TLS groups showed non-significant variation between each other while THS group showed significant differences from them. No significant changes were detected in blood pressure, hemoglobin, white blood cells, and platelets. Conclusion: Telmisartan SNEDDS, compared with telmisartan, more effectively reversed chronic hepatic fibrosis with good safety profile.
    Type of Medium: Online Resource
    ISSN: 1559-3258 , 1559-3258
    URL: Article
    DOI: 10.1177/1559325820982190
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2020
    detail.hit.zdb_id: 2440820-7
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  • 7
    Online Resource
    Online Resource
    Evaluation of the Antimicrobial Activity ZnO/Ampicillin Nanocomposite Against Sensitive and Resistant Strains: Role of γ-Irradiation on Its Biological Activity
    SAGE Publications ; 2012
    In:  International Journal of Green Nanotechnology Vol. 4, No. 3 ( 2012-07), p. 240-247
    Details
    In: International Journal of Green Nanotechnology, SAGE Publications, Vol. 4, No. 3 ( 2012-07), p. 240-247
    Type of Medium: Online Resource
    ISSN: 1943-0892 , 1943-0906
    URL: Article
    DOI: 10.1080/19430892.2012.706106
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2012
    detail.hit.zdb_id: 2525524-1
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  • 8
    Online Resource
    Online Resource
    COVID-19 vaccination perceptions and attitudes among Egyptian medical students
    SAGE Publications ; 2022
    In:  Journal of Public Health Research Vol. 11, No. 2 ( 2022-04), p. 227990362211031-
    Details
    In: Journal of Public Health Research, SAGE Publications, Vol. 11, No. 2 ( 2022-04), p. 227990362211031-
    Abstract: This study aimed to assess perceptions and attitudes toward COVID-19 vaccines among medical students. Methods: A consecutive convenient sample of 2100 university students representing the student’s union network were included using an electronic self-administered questionnaire. About 12 items were used to assess attitudes and acceptance of COVID-19 vaccines. Results: A total of 2100 volunteers responded to the survey. All ages ranged from 18 to 25 years, 69% were females, and 57.3% were from urban residences. According to their willingness to receive the COVID-19 vaccine, 49.7% accepted, 38.5% hesitated, and 11.8% refused vaccination. Out of 60 scales measuring their attitudes, a median total score of 46.0 (42.0–49.0) differed significantly in relation to genders, residence, and vaccine decision-making groups. Logistic regression analysis showed that participants who consented that COVID-19 mass vaccination could prevent the spread of infection in the community and stop the pandemic have 1.9 higher odds of accepting vaccination ( p = 0.003). Additionally, the participants who believed that the vaccine had no severe infection or side effects were 3.1 and 2.8 higher folds for vaccine acceptance, respectively ( p = 0.001). Moreover, participants who thought it was not too early for clinical trials were 4.3 times more likely to take the vaccine ( p = 0.001). Individuals who agreed that information about vaccine side effects better to discuss openly with the authorities were 2.8 times more likely to accept vaccination than other hesitating/ refusing groups, p-value  〈  0.001. Conclusions: Understanding students’ perspectives of the COVID-19 vaccine and supporting their health engagement and awareness may help plan an adequate response.
    Type of Medium: Online Resource
    ISSN: 2279-9036 , 2279-9036
    URL: Article
    DOI: 10.1177/22799036221103108
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
    detail.hit.zdb_id: 2672312-8
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  • 9
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    Online Resource
    Glomus Tumor of the Stomach Presenting With Upper Gastrointestinal Bleeding: A Case Report
    SAGE Publications ; 2023
    In:  Journal of Investigative Medicine High Impact Case Reports Vol. 11 ( 2023-01)
    Details
    In: Journal of Investigative Medicine High Impact Case Reports, SAGE Publications, Vol. 11 ( 2023-01)
    Abstract: Gastric glomus tumor is a rare mesenchymal tumor of the gastrointestinal tract, accounting for approximately 1% of all gastrointestinal soft tissue tumors. We describe a unique case of a 27-year-old female patient who presented with recurrent episodes of overt gastrointestinal bleeding requiring multiple blood transfusions. The patient was diagnosed with a gastric ulcer detected on esophagogastroduodenoscopy (EGD), which was grossly suggestive of an ulcerated gastrointestinal stromal tumor (GIST). Preoperative diagnosis was difficult, requiring laparoscopic robotic-assisted local wedge resection of the gastric mass. Pathological diagnosis and immunohistochemical (IHC) studies were consistent with a glomus tumor. We emphasize that the gastric glomus tumor might present with life-threatening recurrent gastrointestinal hemorrhage. In addition, it might mimic GIST and require surgical resection. Pathological diagnosis and IHC studies are needed to confirm the diagnosis.
    Type of Medium: Online Resource
    ISSN: 2324-7096 , 2324-7096
    URL: Article
    DOI: 10.1177/23247096231192891
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2023
    detail.hit.zdb_id: 2710326-2
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  • 10
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    Using Decision Trees to Improve the Accuracy of Vehicle Signature Reidentification
    SAGE Publications ; 2004
    In:  Transportation Research Record: Journal of the Transportation Research Board Vol. 1886, No. 1 ( 2004-01), p. 24-33
    Details
    In: Transportation Research Record: Journal of the Transportation Research Board, SAGE Publications, Vol. 1886, No. 1 ( 2004-01), p. 24-33
    Abstract: Vehicle reidentification is the process of tracking a vehicle along a highway as it crosses detection stations. Inductive loop detectors are by far the most widely deployed vehicle detectors. In the present work, vehicle reidentification is performed by combining vehicle-specific information (length and electromagnetic signatures) and some contextual information (lane, speed, and time) to form a decision tree. This approach provides a specific decision tree for tracking vehicles along each highway section. After training, the decision tree successfully classified about 95% of the unseen test records—a significant improvement relative to the literature and our own previous work on the same data. This success rate has been consistently obtained from two data sets: one consisting only of passenger vehicles and another consisting of a representative traffic mix.
    Type of Medium: Online Resource
    ISSN: 0361-1981 , 2169-4052
    URL: Article
    DOI: 10.3141/1886-04
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2004
    detail.hit.zdb_id: 2403378-9
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