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2,142 results on '"BaHammam A"'

75. The relationship between sleep and wake habits and academic performance in medical students: a cross-sectional study

Author

BaHammam Ahmed S, Alaseem Abdulrahman M, Alzakri Abdulmajeed A, Almeneessier Aljohara S, and Sharif Munir M

Subjects
Sleep, Sleep duration, Medical students, Academic performance, School, Special aspects of education, LC8-6691, Medicine
Abstract

Abstract Background The relationship between the sleep/wake habits and the academic performance of medical students is insufficiently addressed in the literature. This study aimed to assess the relationship between sleep habits and sleep duration with academic performance in medical students. Methods This study was conducted between December 2009 and January 2010 at the College of Medicine, King Saud University, and included a systematic random sample of healthy medical students in the first (L1), second (L2) and third (L3) academic levels. A self-administered questionnaire was distributed to assess demographics, sleep/wake schedule, sleep habits, and sleep duration. Daytime sleepiness was evaluated using the Epworth Sleepiness Scale (ESS). School performance was stratified as “excellent” (GPA ≥3.75/5) or “average” (GPA Results The final analysis included 410 students (males: 67%). One hundred fifteen students (28%) had “excellent” performance, and 295 students (72%) had “average” performance. The “average” group had a higher ESS score and a higher percentage of students who felt sleepy during class. In contrast, the “excellent” group had an earlier bedtime and increased TST during weekdays. Subjective feeling of obtaining sufficient sleep and non-smoking were the only independent predictors of “excellent” performance. Conclusion Decreased nocturnal sleep time, late bedtimes during weekdays and weekends and increased daytime sleepiness are negatively associated with academic performance in medical students.

Published
2012
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76. Investigation of oral health assessment measures for the care planning of dependent adults

Author

BaHammam, Fahad Ali

Abstract

Dependent adults (i.e. eighteen-year-old or older who need or receives assistance due to a reduction in mental capacity or physical capability) can experience oral health problems. Whilst the reasons behind these problems are complex, evidence suggests that caregivers' limited knowledge about oral health and care may play a role. Oral health measurement instruments could provide one means by which to help caregivers establishing appropriate oral care plans for dependent adults and, thus, preventing or managing these problems. This project aimed to investigate oral health assessment measures for oral care planning of dependent adults through three separate studies. A qualitative evidence synthesis was undertaken to establish an empirical conceptual model of oral health in dependent adults. It showed that oral health in dependent adults is a dynamic and multidimensional construct that consists of four domains: the intactness and cleanliness of oral structures; oral pain and discomfort; oral functions; and noticeable oral health aspects. A systematic review was undertaken to critically appraise published oral health measurement instruments for dependent adults. It revealed many instruments have been proposed, but none of these instruments has been adequately and comprehensively tested to establish strong evidence in relation to their measurement properties, feasibility and interpretability. Finally, a qualitative interview study was undertaken to explore healthcare service providers' perspectives on barriers and implementation issues in relation to measuring oral health in dependent adults. The consistent theme was that the implementation of oral health measurement instruments may not be easy due to multiple potential barriers. These barriers therefore need to be considered during implementation, including those related to instruments, service providers, dependent adults and implementation environment. The findings in this thesis support a recommendation that multiple perspectives need to be considered when designing and evaluating oral health measurement instruments used to guide oral care planning for dependent adults. By doing this, these instruments are more likely to meet different stakeholders' needs and, thus, can be successfully implemented.

Published
2021

88. Physiology of Normal Sleep

Author

Monti, Jaime M., BaHammam, Ahmed S., Pandi-Perumal, S. R., Gupta, Ravi, editor, Neubauer, David N., editor, and Pandi-Perumal, S. R., editor

Published
2022
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99. Alpha‐synuclein pathology in isolated rapid eye movement sleep behaviour disorder: a meta‐analysis.

Author

Iftikhar, Imran H., AlShimemeri, Sohaila, Rabah, Hussein, Rao, Saad Tauheed, and BaHammam, Ahmed S.

Subjects
BEHAVIOR disorders, CEREBROSPINAL fluid, SLEEP disorders, ODDS ratio, DATABASE searching
Abstract

Summary: Accumulating evidence indicates that patients with isolated rapid eye movement sleep behaviour disorder (iRBD), a prodromal stage of synucleinopathies, show abnormal deposition of misfolded alpha‐synuclein (a‐Syn) in peripheral tissues. The clinical utility of testing for a‐Syn in iRBD is unclear. This meta‐analysis focused on the utility of testing for the abnormal a‐Syn phosphorylated at Ser129 (p‐syn) and a‐Syn seeding activity (a‐Syn seed amplification assays [aSyn‐SAA]). Following an electronic database search, 15 studies were included that provided at a minimum data on test positivity in participants with iRBD. Test positivity from cerebrospinal fluid (CSF) was 80% (95% confidence interval [CI] 68–88%, I2 = 71%) and for skin was 74.8% (95% CI 53.2–88.5%, I2 = 64%) for aSyn‐SAA and 78.5% (95% CI 70.4–84.9%, I2 = 14%) for p‐syn. The phenoconversion rate ratio of biopsy‐positive versus biopsy‐negative iRBD was 1.28 (95% CI 0.68–2.41, I2 = 0%). Skin as a source had a specificity of 99% (95% CI 95–100%, I2 = 0%; p = 0.01 compared to CSF). As a test, p‐syn, had a specificity of 100% (95% CI 93–100%, I2 = 0%; p < 0.001) compared to aSyn‐SAA. The odds ratio of a‐Syn test positivity in iRBD versus other RBDs was 112 (95% CI 20–629, I2 = 0%). These results demonstrate clinically significant test positivity in iRBD and favour skin over CSF as the source of a‐Syn pathological analysis, and p‐syn over aSyn‐SAA as the testing method. Overall, these findings indicate that testing for a‐Syn could help in differentiating iRBD from RBD secondary to other conditions. [ABSTRACT FROM AUTHOR]

Published
2024
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