23 results on '"Nicholas W S, Chew"'
Search Results
2. Gut‐liver axis: Potential mechanisms of action of food‐derived extracellular vesicles
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Sitong Zhang, Qiyue Wang, Daniel En Liang Tan, Vritika Sikka, Cheng Han Ng, Yan Xian, Dan Li, Mark Muthiah, Nicholas W. S. Chew, Gert Storm, Lingjun Tong, and Jiong‐Wei Wang
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food‐derived extracellular vesicles ,gut barrier ,gut microbiota ,gut‐liver axis ,metabolic disease ,milk‐derived extracellular vesicles ,Cytology ,QH573-671 - Abstract
Abstract Food‐derived extracellular vesicles (FEVs) are nanoscale membrane vesicles obtained from dietary materials such as breast milk, plants and probiotics. Distinct from other EVs, FEVs can survive the harsh degrading conditions in the gastrointestinal tract and reach the intestines. This unique feature allows FEVs to be promising prebiotics in health and oral nanomedicine for gut disorders, such as inflammatory bowel disease. Interestingly, therapeutic effects of FEVs have recently also been observed in non‐gastrointestinal diseases. However, the mechanisms remain unclear or even mysterious. It is speculated that orally administered FEVs could enter the bloodstream, reach remote organs, and thus exert therapeutic effects therein. However, emerging evidence suggests that the amount of FEVs reaching organs beyond the gastrointestinal tract is marginal and may be insufficient to account for the significant therapeutic effects achieved regarding diseases involving remote organs such as the liver. Thus, we herein propose that FEVs primarily act locally in the intestine by modulating intestinal microenvironments such as barrier integrity and microbiota, thereby eliciting therapeutic impact remotely on the liver in non‐gastrointestinal diseases via the gut‐liver axis. Likewise, drugs delivered to the gastrointestinal system through FEVs may act via the gut‐liver axis. As the liver is the main metabolic hub, the intestinal microenvironment may be implicated in other metabolic diseases. In fact, many patients with non‐alcoholic fatty liver disease, obesity, diabetes and cardiovascular disease suffer from a leaky gut and dysbiosis. In this review, we provide an overview of the recent progress in FEVs and discuss their biomedical applications as therapeutic agents and drug delivery systems, highlighting the pivotal role of the gut‐liver axis in the mechanisms of action of FEVs for the treatment of gut disorders and metabolic diseases.
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- 2024
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3. Adding Hyponatremia to the 'Rule-of-6' Prediction Tool Improves Performance in Identifying Hospitalised Patients with COVID-19 at Risk of Adverse Clinical Outcomes
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Meng Ying Sim, Jinghao Nicholas Ngiam, Matthew Chung Yi Koh, Wilson Goh, Srishti Chhabra, Nicholas W. S. Chew, Louis Yi Ann Chai, Paul Anantharajah Tambyah, and Ching-Hui Sia
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COVID-19 ,hyponatremia ,predict ,outcomes ,Singapore ,Medicine - Abstract
The ‘rule-of-6’ prediction tool was shown to be able to identify COVID-19 patients at risk of adverse outcomes. During the pandemic, we frequently observed hyponatremia at presentation. We sought to evaluate if adding hyponatremia at presentation could improve the ‘rule-of-6’ prediction tool. We retrospectively analysed 1781 consecutive patients admitted to a single tertiary academic institution in Singapore with COVID-19 infection from February 2020 to October 2021. A total of 161 (9.0%) patients had hyponatremia. These patients were significantly older, with more co-morbidities and more likely to be admitted during the Delta wave (2021). They were more likely to have radiographic evidence of pneumonia (46.0% versus 13.0%, p < 0.001) and more adverse outcomes (25.5% vs. 4.1%, p < 0.001). Hyponatremia remained independently associated with adverse outcomes after adjusting for age, lack of medical co-morbidities, vaccination status, year of admission, CRP, LDH, and ferritin. The optimised cut-off for serum sodium in predicting adverse outcomes was approximately
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- 2024
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4. Public acceptance of using artificial intelligence-assisted weight management apps in high-income southeast Asian adults with overweight and obesity: a cross-sectional study
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Han Shi Jocelyn Chew, Palakorn Achananuparp, Mayank Dalakoti, Nicholas W. S. Chew, Yip Han Chin, Yujia Gao, Bok Yan Jimmy So, Asim Shabbir, Lim Ee Peng, and Kee Yuan Ngiam
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artificial intelligence ,obesity ,implementation ,acceptability ,weight management ,behavior ,Nutrition. Foods and food supply ,TX341-641 - Abstract
IntroductionWith in increase in interest to incorporate artificial intelligence (AI) into weight management programs, we aimed to examine user perceptions of AI-based mobile apps for weight management in adults with overweight and obesity.Methods280 participants were recruited between May and November 2022. Participants completed a questionnaire on sociodemographic profiles, Unified Theory of Acceptance and Use of Technology 2 (UTAUT2), and Self-Regulation of Eating Behavior Questionnaire. Structural equation modeling was performed using R. Model fit was tested using maximum-likelihood generalized unweighted least squares. Associations between influencing factors were analyzed using correlation and linear regression.Results271 participant responses were analyzed, representing participants with a mean age of 31.56 ± 10.75 years, median (interquartile range) BMI, and waist circumference of 27.2 kg/m2 (24.2–28.4 kg/m2) and 86.4 (80.0–94.0) cm, respectively. In total, 188 (69.4%) participants intended to use AI-assisted weight loss apps. UTAUT2 explained 63.3% of the variance in our intention of the sample to use AI-assisted weight management apps with satisfactory model fit: CMIN/df = 1.932, GFI = 0.966, AGFI = 0.954, NFI = 0.909, CFI = 0.954, RMSEA = 0.059, SRMR = 0.050. Only performance expectancy, hedonic motivation, and the habit of using AI-assisted apps were significant predictors of intention. Comparison with existing literature revealed vast variabilities in the determinants of AI- and non-AI weight loss app acceptability in adults with and without overweight and obesity. UTAUT2 produced a good fit in explaining the acceptability of AI-assisted apps among a multi-ethnic, developed, southeast Asian sample with overweight and obesity.ConclusionUTAUT2 model is recommended to guide the development of AI-assisted weight management apps among people with overweight and obesity.
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- 2024
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5. Cardiovascular Health Metrics Differ Between Individuals With and Without Cancer
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Ofer Kobo, Dmitry Abramov, Manuela Fiuza, Nicholas W. S. Chew, Cheng Han Ng, Purvi Parwani, Miguel Nobre Menezes, Paaladinesh Thavendiranathan, and Mamas A. Mamas
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cancer ,cardiovascular disease ,health metrics ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background Although individuals with cancer experience high rates of cardiovascular morbidity, there are limited data on the potential differences in cardiovascular health (CVH) metrics between individuals with and without cancer. Methods and Results The National Health and Nutrition Examination Survey between 2015 and 2020 was queried to evaluate the prevalence of health metrics that comprise the American Heart Association Life's Essential 8 construct of cardiovascular health among adult individuals with and without cancer in the United States. Health metric scores were also evaluated according to important patient demographics including age, sex, race and ethnicity, and socioeconomic status. Among 4370 participants representing >180 million US adults, 9.4% had a history of cancer. Individuals with cancer had lower overall cardiovascular health scores (67.1 versus 69.1, P
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- 2023
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6. Immune Activation Mediates the Association of Advanced Hepatic Fibrosis With Adverse Outcomes in Patients With Coronary Artery Disease
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Vardhmaan Jain, Anurag Mehta, Terence B. Lee, Chang Liu, Nicholas W. S. Chew, Yi‐An Ko, Matthew E. Gold, Daniel A. Gold, Nishant Vatsa, Shivang R. Desai, Jonathan H. Kim, Alireza Rahbar, Yazan Haroun, Kiran Ejaz, Salim S. Hayek, Mohammad S. Siddiqui, Fadi N. Salloum, Laurence S. Sperling, Arun J. Sanyal, and Arshed A. Quyyumi
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advanced hepatic fibrosis ,coronary artery disease ,hsCRP ,immune activation ,suPAR ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background Literature suggests a bidirectional association between advanced hepatic fibrosis (AHF) and coronary artery disease (CAD). We evaluated the association of AHF with immune activation, systemic inflammation, and adverse outcomes in patients with CAD. Methods and Results A fibrosis‐4 index cutoff value ≥2.67 was used to define AHF. Circulating levels of soluble urokinase plasminogen activator receptor and hsCRP (high‐sensitivity C‐reactive protein) were measured as markers for immune activation and systemic inflammation, respectively. The relationship of AHF with soluble urokinase plasminogen activator receptor, hsCRP, and adverse cardiovascular outcomes was evaluated. Among 3406 participants with CAD, 479 had AHF. Participants with AHF were older; were less likely to be Black individuals; and had a lower body mass index, worse renal function, and a prior history of heart failure. In multivariable linear regression models adjusted for clinical and demographic confounders, participants with AHF had 15.6% higher soluble urokinase plasminogen activator receptor and 24.0% higher hsCRP levels. They were more likely to experience the following adverse outcomes: all‐cause death (adjusted hazard ratio [HR], 1.57 ([95% CI, 1.29–1.92]; P
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- 2023
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7. Impact of the COVID‐19 Pandemic on Diabetes‐Related Cardiovascular Mortality in the United States
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Hussein Bashar, Ofer Kobo, Kamlesh Khunti, Louise Y. Sun, Martin K. Rutter, Nicholas W. S. Chew, Nick Curzen, and Mamas A. Mamas
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cardiovascular mortality ,COVID‐19 ,diabetes ,ischemic heart disease ,racial disparities ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background In the past few decades, diabetes‐related cardiovascular mortality has been steadily declining. However, the impact of the COVID19 pandemic on this trend has not been previously defined. Methods and Results Diabetes‐related cardiovascular mortality data were extracted for each year between 1999 and 2020 from the Centers for Disease Control and Prevention Wide‐Ranging Online Data for Epidemiologic Research (WONDER) database. Regression analysis was used to calculate the trend in the 2 decades before the pandemic (1999–2019) and thereby estimate the excess cardiovascular mortality in 2020. There was a 29.2% fall in the diabetes‐related cardiovascular age‐adjusted mortality rate between 1999 to 2019, largely driven by a 41% decrease in ischemic heart disease deaths. In comparison to 2019, there was an overall 15.5% increase in the diabetes‐related cardiovascular age‐adjusted mortality rate in the first year of the pandemic, mainly due to a 14.1% rise in ischemic heart disease deaths. Younger patients (under 55 years) and the Black population experienced the greatest increase in diabetes‐related cardiovascular age‐adjusted mortality rate (24.0% and 25.3%, respectively). Trend analysis estimated 16 009 excess diabetes‐related cardiovascular deaths in 2020, with the majority due to ischemic heart disease (8504). Black and Hispanic or Latino populations had at least one‐fifth of their 2020 diabetes‐related cardiovascular age‐adjusted mortality rate as excess deaths (22.3% and 20.2%, respectively). Conclusions There was a sharp rise in diabetes‐related cardiovascular mortality during the first pandemic year. Black, Hispanic or Latino, and young people showed the largest increases in diabetes‐related cardiovascular mortality. Targeted health policies could help address the disparities observed in this analysis.
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- 2023
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8. Editorial: The heart of NAFLD
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Nicholas W. S. Chew, Shankar Kannan, Bryan Chong, Yiphan Chin, and Mark Muthiah
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non-alcoholic fatty liver disease ,cardiovascular disease ,coronary artery disease ,heart failure ,hyperlipidemia ,diabetes ,Medicine (General) ,R5-920 - Published
- 2023
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9. General Public’s knowledge, awareness, and perception of Cardiometabolic diseases: data from a Singapore study population
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Vickram Vijay Anand, Rachel Sze Jen Goh, Benjamin Nah, Sky Wei Chee Koh, Jieyu Lim, Nicholas W. S. Neo, Jocelyn Chew, Yuan Ying Lee, Yip Han Chin, Bryan Chong, Gwyneth Kong, Bryan Tan, Zhiwen Low, Chin Meng Khoo, Lay Hoon Goh, Poay Huan Loh, Ping Chai, Mayank Dalakoti, Mark Chan, Roger Foo, Mark Muthiah, and Nicholas W. S. Chew
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knowledge ,awareness ,perception ,actions ,cardiometabolic disease ,risk factors ,Medicine (General) ,R5-920 - Abstract
BackgroundHealth literacy and illness perception play crucial roles in tackling the cardiometabolic disease epidemic. We aim to compare the attitudes, knowledge, self-perceived risks and actions taken, between individuals with and without metabolic risk factors (MFs).MethodsFrom 5 June to 5 October 2022, participants of the general public were invited to complete a self-administered questionnaire. MF status was defined as the presence of hypertension, hyperlipidemia, diabetes mellitus and/or current/previous smoking. Participants were assessed based on four categories (knowledge-based, attitude-based, perceived risk, and action-based) of questions pertaining to four cardiometabolic diseases – diabetes mellitus, hypertension, hyperlipidemia, and non-alcoholic fatty liver disease.ResultsA total of 345 participants were enrolled, of whom 34.5% had at least one MF. Compared to those without MFs, participants with MFs had lower knowledge scores, but higher perceived risk scores across all cardiometabolic diseases. The largest knowledge gap pertained to hypertension-related questions. After adjustment, linear regression demonstrated that the presence of MFs (β:2.752, 95%CI: 0.772–4.733, p = 0.007) and higher knowledge scores (β:0.418, 95%CI: 0.236–0.600, p
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- 2023
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10. Utility of conventional clinical risk scores in a low-risk COVID-19 cohort
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Jinghao Nicholas Ngiam, Nicholas W. S. Chew, Sai Meng Tham, Zhen Yu Lim, Tony Y. W. Li, Shuyun Cen, Paul Anantharajah Tambyah, Amelia Santosa, Ching-Hui Sia, and Gail Brenda Cross
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COVID-19 ,Risk score ,Outcomes ,Fever ,Singapore ,Infectious and parasitic diseases ,RC109-216 - Abstract
Abstract Background Several specific risk scores for Coronavirus disease 2019 (COVID-19) involving clinical and biochemical parameters have been developed from higher-risk patients, in addition to validating well-established pneumonia risk scores. We compared multiple risk scores in predicting more severe disease in a cohort of young patients with few comorbid illnesses. Accurately predicting the progression of COVID-19 may guide triage and therapy. Methods We retrospectively examined 554 hospitalised COVID-19 patients in Singapore. The CURB-65 score, Pneumonia Severity Index (PSI), ISARIC 4C prognostic score (4C), CHA2DS2-VASc score, COVID-GRAM Critical Illness risk score (COVID-GRAM), Veterans Health Administration COVID-19 index for COVID-19 Mortality (VACO), and the “rule-of-6” score were compared for three performance characteristics: the need for supplemental oxygen, intensive care admission and mechanical ventilation. Results A majority of patients were young (≤ 40 years, n = 372, 67.1%). 57 (10.3%) developed pneumonia, with 16 (2.9% of study population) requiring supplemental oxygen. 19 patients (3.4%) required intensive care and 2 patients (0.5%) died. The clinical risk scores predicted patients who required supplemental oxygenation and intensive care well. Adding the presence of fever to the CHA2DS2-VASc score and 4C score improved the ability to predict patients who required supplemental oxygen (c-statistic 0.81, 95% CI 0.68–0.94; and 0.84, 95% CI 0.75–0.94 respectively). Conclusion Simple scores including well established pneumonia risk scores can help predict progression of COVID-19. Adding the presence of fever as a parameter to the CHA2DS2-VASc or the 4C score improved the performance of these scores in a young population with few comorbidities.
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- 2021
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11. Depression in non-alcoholic fatty liver disease is associated with an increased risk of complications and mortality
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Cheng Han Ng, Jieling Xiao, Nicholas W. S. Chew, Yip Han Chin, Kai En Chan, Jingxuan Quek, Wen Hui Lim, Darren Jun Hao Tan, Ryan Wai Keong Loke, Caitlyn Tan, Ansel Shao Pin Tang, Xin Lei Goh, Benjamin Nah, Nicholas Syn, Dan Yock Young, Nobuharu Tamaki, Daniel Q. Huang, Mohammad Shadab Siddiqui, Mazen Noureddin, Arun Sanyal, and Mark Muthiah
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depression ,NAFLD ,NASH ,NHANES ,complication ,mortality ,Medicine (General) ,R5-920 - Abstract
Background and aimsThe global prevalence of non-alcoholic fatty liver disease (NAFLD) is expected to rise continuously. Furthermore, emerging evidence has also shown the potential for concomitant depression in NAFLD. This study aims to examine the prevalence, risk factors, and adverse events of depression in NAFLD and evaluate whether treated depression can reverse the increased risks of adverse outcomes.Materials and methodsThis study analyses the 2000–2018 cycles of NHANES that examined liver steatosis with fatty liver index (FLI). The relationship between NAFLD and depression was assessed with a generalized linear mix model and a sensitivity analysis was conducted in the no depression, treated depression, and untreated depression groups. Survival analysis was conducted with cox regression and fine gray sub-distribution model.ResultsA total of 21,414 patients were included and 6,726 were diagnosed with NAFLD. The risk of depression in NAFLD was 12% higher compared to non-NAFLD individuals (RR: 1.12, CI: 1.00–1.26, p = 0.04). NAFLD individuals with depression were more likely to be older, females, Hispanics or Caucasians, diabetic, and have higher BMI. Individuals with depression have high risk for cardiovascular diseases (CVD) (RR: 1.40, CI: 1.25–1.58, p < 0.01), stroke (RR: 1.71, CI: 1.27–2.23, p < 0.01), all-cause mortality (HR: 1.50, CI: 1.25–1.81, p < 0.01), and cancer-related mortality (SHR: 1.43, CI: 1.14–1.80, p = 0.002) compared to NAFLD individuals without depression. The risk of CVD, stroke, all-cause mortality, and cancer-related mortality in NAFLD individuals with treated depression and depression with untreated treatment was higher compared to individuals without depression.ConclusionThis study shows that concomitant depression in NAFLD patients can increase the risk of adverse outcomes. Early screening of depression in high-risk individuals should be encouraged to improve the wellbeing of NAFLD patients.
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- 2022
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12. A poor perspective of self weight significantly increases adverse outcomes in non-alcoholic fatty liver disease (NAFLD)
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Clarissa Elysia Fu, Cheng Han Ng, Nicholas W. S. Chew, Zane En Qi Heng, Yip Han Chin, Jingxuan Quek, Wen Hui Lim, Jieling Xiao, Kai En Chan, Darren Jun Hao Tan, Caitlyn Tan, Sitong Zhang, Teng Kiat Koh, Benjamin Nah, Yock Young Dan, Nicholas Syn, Mohammad Shadab Siddiqui, Arun J. Sanyal, Mazen Noureddin, and Mark Muthiah
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weight perception ,NAFLD ,non-alcoholic fatty liver disease ,NAFLD outcomes ,mortality ,Medicine (General) ,R5-920 - Abstract
BackgroundNon-alcoholic fatty liver disease (NAFLD) is prevalent amongst overweight and obese individuals, and weight loss remains the main mode of treatment for NAFLD patients. Weight perception plays a key role in the efficacy of such treatment. The current study aims to investigate the prevalence, associating factors and implications of poor weight perception amongst such individuals.MethodsAn analysis was done on data collected from NHANES between 1999 and 2018. Comparison was made between NAFLD individuals with and without poor weight perception in terms of prevalence, associated characteristics, and clinical outcomes. Multivariate analysis was used to compare effect size of adverse events associated with NAFLD individuals with poor weight perception.ResultsOf the 12,170 NAFLD patients, 19.2% (CI: 18.5 to 19.9%) had poor weight perception. Poor weight perception was significantly associated with lower education levels, reduced levels of exercise and unhealthier lipid profiles. There was an increased risk in all-cause mortality (HR: 1.18, CI: 1.00 to 1.38, p = 0.047), cardiovascular disease mortality (SHR: 1.33, CI: 1.03 to 1.71, p = 0.026), major adverse cardiovascular events (OR: 1.21 CI: 1.10 to 1.32, p < 0.001), and advanced fibrosis (OR: 1.30, CI: 1.03 to 1.64, p = 0.025) for individuals with poor weight perception.ConclusionThis study highlights the positive association between appropriate weight perception and better outcomes in individuals with NAFLD. Poor weight perception increased the risk of adverse events and decreased inclination toward seeking weight loss treatment. Greater emphasis should be placed on dealing with weight perception in individuals with NAFLD for better treatment outcomes.
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- 2022
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13. Hypertension is prevalent in non-alcoholic fatty liver disease and increases all-cause and cardiovascular mortality
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Cheng Han Ng, Zhen Yu Wong, Nicholas W. S. Chew, Kai En Chan, Jieling Xiao, Nilofer Sayed, Wen Hui Lim, Darren Jun Hao Tan, Ryan Wai Keong Loke, Phoebe Wen Lin Tay, Jie Ning Yong, Gywneth Kong, Daniel Q. Huang, Jiong-Wei Wang, Mark Chan, Mayank Dalakoti, Nobuharu Tamaki, Mazen Noureddin, Mohammad Shadab Siddiqui, Arun J. Sanyal, and Mark Muthiah
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non-alcoholic fatty liver (NAFL) ,controlled hypertension ,uncontrolled hypertension ,mortality ,cardiovascular ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background and aimsHypertension (HTN) is a common comorbidity in non-alcoholic fatty liver disease (NAFLD) affecting up to 40% of individuals. However, the impact of HTN and its control on outcomes in NAFLD remains unclear. Therefore, we aimed to examine the impact of HTN on survival outcomes in a longitudinal cohort of NAFLD patients.MethodsThe analysis consisted of adults in the National Health and Nutrition Examination Survey (NHANES) from 1999 to 2018 with data on socio-demographic characteristics and comorbidities. NAFLD was diagnosed with fatty liver index (FLI) and United States-FLI at a cut-off of 60 and 30, respectively in the substantial absence of alcohol use. A multivariate regression analysis was conducted to adjust for confounders.ResultsA total of 45,302 adults were included, and 27.83% were identified to have NAFLD. Overall, 45.65 and 35.12% of patients with NAFLD had HTN and uncontrolled HTN, respectively. A multivariate analysis with confounders demonstrated that hypertensive NAFLD had a significantly increased risk of all-cause mortality (HR: 1.39, CI: 1.14–1.68, p < 0.01) and cardiovascular disease (CVD) mortality (HR: 1.85, CI: 1.06–3.21, p = 0.03). Untreated HTN remained to have a significantly increased risk in all-cause (HR: 1.59, CI: 1.28–1.96, p < 0.01) and CVD mortality (HR: 2.36, CI: 1.36–4.10, p < 0.01) while treated HTN had a non-significant increased risk of CVD mortality (HR: 1.51, CI: 0.87–2.63, p = 0.14) and a lower magnitude of increase in the risk of all-cause mortality (HR: 1.26, CI: 1.03–1.55, p = 0.03).ConclusionDespite the significant burden of HTN in NAFLD, up to a fifth of patients have adequate control, and the lack thereof significantly increases the mortality risk. With the significant association of HTN in NAFLD, patients with NAFLD should be managed with a multidisciplinary team to improve longitudinal outcomes.
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- 2022
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14. Prognostic Outcomes in Acute Myocardial Infarction Patients Without Standard Modifiable Risk Factors: A Multiethnic Study of 8,680 Asian Patients
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Gwyneth Kong, Nicholas W. S. Chew, Cheng Han Ng, Yip Han Chin, Oliver Z. H. Lim, Anand Ambhore, Gavin Ng, William Kong, Kian-Keong Poh, Roger Foo, James Yip, Tiong-Cheng Yeo, Adrian Fatt-Hoe Low, Chi-Hang Lee, Mark Yan-Yee Chan, Huay-Cheem Tan, and Poay-Huan Loh
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hypertension ,hyperlipidemia ,diabetes ,standard modifiable cardiovascular risk factors ,prognostic outcomes ,smoking ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
BackgroundAn increasing proportion of patients with acute myocardial infarction (AMI) are presenting without standard modifiable risk factors (SMuRFs) of hypertension, hypercholesterolemia, diabetes, and smoking, but with an unexpectedly increased mortality. This study examined the SMuRF-less patients presenting with AMI in a multiethnic Asian population.MethodsWe recruited patients presenting with AMI from 2011 to 2021 and compared the prevalence, clinical characteristics, and outcomes of SMuRF-less and SMuRF patients. Multivariable analysis was used to compare the outcomes of 30-day cardiovascular mortality, all-cause mortality, readmission, cardiogenic shock, stroke, and heart failure. Kaplan–Meier curves were constructed for 30-day cardiovascular mortality, with stratification by ethnicity, gender and AMI type, and 10-year all-cause mortality.ResultsStandard modifiable risk factor-less patients, who made up 8.6% of 8,680 patients, were significantly younger with fewer comorbidities that include stroke and chronic kidney disease, but higher rates of ventricular arrhythmias and inotropic or invasive ventilation requirement. Multivariable analysis showed higher rates of cardiovascular mortality (HR 1.48, 95% CI: 1.09–1.86, p = 0.048), cardiogenic shock (RR: 1.31, 95% CI: 1.09–1.52, p = 0.015), and stroke (RR: 2.51, 95% CI: 1.67–3.34, p = 0.030) among SMuRF-less patients. A 30-day cardiovascular mortality was raised in the SMuRF-less group, with similar trends in men, patients with ST-segment elevation myocardial infarction (STEMI), and the three Asian ethnicities. All-cause mortality remains increased in the SMuRF-less group for up to 5 years.ConclusionThere is a significant proportion of patients with AMI without standard risk factors in Asia, who have worse short-term mortality. This calls for greater focus on the management of this unexpectedly high-risk subgroup of patients.
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- 2022
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15. Coronary Artery Bypass Grafting Versus Percutaneous Coronary Intervention for Multivessel Coronary Artery Disease: A One-Stage Meta-Analysis
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Nicholas W. S. Chew, Jin Hean Koh, Cheng Han Ng, Darren Jun Hao Tan, Jie Ning Yong, Chaoxing Lin, Oliver Zi-Hern Lim, Yip Han Chin, Denzel Ming Wei Lim, Koo Hui Chan, Poay-Huan Loh, Adrian Low, Chi-Hang Lee, Huay-Cheem Tan, and Mark Chan
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multivessel coronary artery disease (MVD) ,coronary artery bypass grafting (CABG) ,percutaneous coronary intervention ,mortality ,coronary artery ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background and AimsData are emerging on 10-year mortality comparing coronary artery bypass grafting (CABG) and percutaneous coronary intervention (PCI) with stenting for multivessel disease (MVD) without left main (LM) involvement. We conducted an updated two-stage meta-analysis using reconstructed individual patient data to compare long-term mortality between CABG and PCI for patients with MVD without significant LM coronary disease.MethodsMedline and Embase databases were searched for articles comparing CABG with PCI for MVD. A two-stage meta-analysis was conducted using reconstructed patient level survival data for all-cause mortality with subgroups by SYNTAX score. The shared-frailty and stratified Cox models were fitted to compare survival endpoints.ResultsWe screened 1,496 studies and included six randomized controlled trials with 7,181 patients. PCI was associated with greater 10-year all-cause mortality risk (HR: 1.282, CI: 1.118–1.469, p < 0.001) compared with CABG. In patients with low SYNTAX score, 10-year all-cause mortality after PCI was comparable to CABG (HR: 1.102, 0.822–1.479, p = 0.516). However, in patients with moderate to high SYNTAX score, 10-year all-cause mortality was significantly higher after PCI compared with CABG (HR: 1.444, 1.122–1.858, p < 0.001; HR: 1.856, 1.380–2.497, p < 0.001, respectively).ConclusionThis updated reconstructed individual patient-data meta-analysis revealed a sustained lower cumulative all-cause mortality of CABG over PCI for multivessel disease without LM involvement.
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- 2022
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16. Prevalence, Risk Factors and Intervention for Depression and Anxiety in Pulmonary Hypertension: A Systematic Review and Meta-analysis
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Aaron Shengting Mai, Oliver Zi Hern Lim, Yeung Jek Ho, Gwyneth Kong, Grace En Hui Lim, Cheng Han Ng, Cyrus Ho, Roger Ho, Yinghao Lim, Ivandito Kuntjoro, Edgar Tay, James Yip, Nicholas W. S. Chew, and Ting-Ting Low
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depression ,anxiety ,risk factors ,prevalence ,pulmonary hypertension ,interventions ,Medicine (General) ,R5-920 - Abstract
BackgroundCurrent guidelines recommend psychological support for patients with pulmonary hypertension suffering from psychological adversity. However, little is known about the prevalence and risk factors of depression and anxiety in patients with pulmonary hypertension (PH).MethodsMedline and Embase were searched from inception to 6 May 2021. Meta-analysis of proportions using the generalized linear mixed model was conducted to analyze the pooled prevalence rates of depression and anxiety in PH patients. Risk factors for depression and anxiety in PH patients were evaluated using meta regression.ResultsA total of 24 studies involving 2,161 PH patients were included. The pooled prevalence of depression in PH was 28.0% (95% CI: 20.5–36.8) and pooled prevalence of anxiety was 37.1% (95% CI: 28.7–46.4). There was a significantly higher prevalence of anxiety (p = 0.0013) amongst PH patients in Asia (61.1%) compared to Europe (40.3%) and North America (22.9%). In terms of risk factors, congenital heart disease-related pulmonary arterial hypertension (PAH-CHD) were significantly associated with both depression (OR: 1.68, 95% CI: 1.27–2.23, p = 0.024) and anxiety (OR: 1.63, 95% CI: 1.45–1.83, p = 0.002). On the other hand, chronic thromboembolic pulmonary hypertension (CTEPH, OR: 1.18, 95% CI: 1.10–1.26, p = 0.004) was significantly associated with depression, whereas worse pulmonary vascular resistance (β: 0.30, 95% CI: 0.09–0.52, p = 0.005) and cardiac index (β: −0.96, 95% CI: −1.58 to −0.35, p = 0.002) were significantly correlated with anxiety.ConclusionThe prevalence of anxiety and depression in PH patients is alarmingly high, with an increased prevalence of anxiety in Asia compared to Europe or North America. Psychological support is warranted for patients with PH, particularly those with underlying congenital heart disease, CTEPH, and severe disease.Systematic Review RegistrationCRD42021251733.
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- 2022
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17. A network meta-analysis of 12,116 individuals from randomized controlled trials in the treatment of depression after acute coronary syndrome
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Grace En Hui Lim, Ansel Tang, Yip Han Chin, Jie Ning Yong, Darren Tan, Phoebe Tay, Yu Yi Chan, Denzel Ming Wei Lim, Jun Wei Yeo, Kai En Chan, Kamala Devi, Colin Eng Choon Ong, Roger S. Y. Foo, Huay-Cheem Tan, Mark Y. Chan, Roger Ho, Poay Huan Loh, and Nicholas W. S. Chew
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Medicine ,Science - Abstract
Background Post-acute coronary syndrome (ACS) depression is a common but not well understood complication experienced by ACS patients. Research on the effectiveness of various therapies remains limited. Hence, we sought to conduct a network meta-analysis to assess the efficacy of different interventions for post-ACS depression in improving patient outcomes. Methods and findings Three electronic databases were searched for randomised controlled trials describing different depression treatment modalities in post-ACS patients. Each article was screened based on inclusion criteria and relevant data were extracted. A bivariate analysis and a network meta-analysis was performed using risk ratios (RR) and standardized mean differences (SMD) for binary and continuous outcomes, respectively. A total of 30 articles were included in our analysis. Compared to standard care, psychosocial therapy was associated with the greatest reduction in depression scores (SMD:-1.21, 95% CI: -1.81 to -0.61, pConclusion This network meta-analysis found that the treatment effect of the various psychological modalities on depression severity were similar. Future trials on psychological interventions assessing clinical outcomes and improvement in adherence to ACS-specific interventions are needed.
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- 2022
18. A network meta-analysis of 12,116 individuals from randomized controlled trials in the treatment of depression after acute coronary syndrome.
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Grace En Hui Lim, Ansel Tang, Yip Han Chin, Jie Ning Yong, Darren Tan, Phoebe Tay, Yu Yi Chan, Denzel Ming Wei Lim, Jun Wei Yeo, Kai En Chan, Kamala Devi, Colin Eng Choon Ong, Roger S Y Foo, Huay-Cheem Tan, Mark Y Chan, Roger Ho, Poay Huan Loh, and Nicholas W S Chew
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Medicine ,Science - Abstract
BackgroundPost-acute coronary syndrome (ACS) depression is a common but not well understood complication experienced by ACS patients. Research on the effectiveness of various therapies remains limited. Hence, we sought to conduct a network meta-analysis to assess the efficacy of different interventions for post-ACS depression in improving patient outcomes.Methods and findingsThree electronic databases were searched for randomised controlled trials describing different depression treatment modalities in post-ACS patients. Each article was screened based on inclusion criteria and relevant data were extracted. A bivariate analysis and a network meta-analysis was performed using risk ratios (RR) and standardized mean differences (SMD) for binary and continuous outcomes, respectively. A total of 30 articles were included in our analysis. Compared to standard care, psychosocial therapy was associated with the greatest reduction in depression scores (SMD:-1.21, 95% CI: -1.81 to -0.61, pConclusionThis network meta-analysis found that the treatment effect of the various psychological modalities on depression severity were similar. Future trials on psychological interventions assessing clinical outcomes and improvement in adherence to ACS-specific interventions are needed.
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- 2022
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19. The Association of Plant-Based Diet With Cardiovascular Disease and Mortality: A Meta-Analysis and Systematic Review of Prospect Cohort Studies
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Jingxuan Quek, Grace Lim, Wen Hui Lim, Cheng Han Ng, Wei Zheng So, Jonathan Toh, Xin Hui Pan, Yip Han Chin, Mark D. Muthiah, Siew Pang Chan, Roger S. Y. Foo, James Yip, Nithya Neelakantan, Mary F. F. Chong, Poay Huan Loh, and Nicholas W. S. Chew
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vegetarians ,vegans ,heart disease ,cardiovascular disease ,plant-based diets ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background: The association between plant-based diets and cardiovascular disease (CVD) remains poorly characterized. Given that diet represents an important and a modifiable risk factor, this study aimed to assess (1) the relationships between the impact of adherence to plant-based diets on cardiovascular mortality, incident CVD, and stroke; (2) if associations differed by adherence to healthful and less healthful plant-based diets.Methods and Findings: MEDLINE and EMBASE databases were searched up to May 2021. Studies assessing CVD outcomes with relation to plant-based dietary patterns or according to plant-based dietary indices (PDI) were included. A meta-analysis of hazard ratios (HR) was conducted using DerSimonian and Laird random effects model. Thirteen studies involving 410,085 participants were included. Greater adherence to an overall plant-based dietary pattern was significantly associated with a lower risk of cardiovascular mortality (pooled HR: 0.92, 95% CI: 0.86–0.99 p = 0.0193, I2 = 88.5%, N = 124,501) and a lower risk of CVD incidence (pooled HR: 0.90, 95% CI: 0.82–0.98, p = 0.0173, I2 = 87.2%, N = 323,854). Among the studies that used PDI, unhealthful plant-based diets were associated with increased risk of cardiovascular mortality (pooled HR: 1.05, 95% CI: 1.01–1.09, p = 0.0123, I2 = 0.00%, N = 18,966), but not CVD incidence. Conversely, healthful plant-based diets were associated with decreased CVD incidence (pooled HR: 0.87, 95% CI: 0.80–0.95, p = 0.0011, I2 = 57.5%, N = 71,301), but not mortality. Vegetarians also had significantly lower CVD incidence (HR: 0.81, 95% CI: 0.72–0.91, p = 0.0004, I2 = 22.2%, N = 16,254), but similar CVD mortality or stroke risk when compared to the meat-eaters.Conclusion: To date, this comprehensive study examines the effects of a plant-based diet on major clinical endpoints using more holistic PDIs. These findings highlight the favorable role of healthful plant-based foods in reducing cardiovascular mortality and CVD.
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- 2021
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20. Post-ST-Segment Elevation Myocardial Infarction Follow-Up Care During the COVID-19 Pandemic and the Possible Benefit of Telemedicine: An Observational Study
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Audrey A. Y. Zhang, Nicholas W. S. Chew, Cheng Han Ng, Kailun Phua, Yin Nwe Aye, Aaron Mai, Gwyneth Kong, Kalyar Saw, Raymond C. C. Wong, William K. F. Kong, Kian-Keong Poh, Koo-Hui Chan, Adrian Fatt-Hoe Low, Chi-Hang Lee, Mark Yan-Yee Chan, Ping Chai, James Yip, Tiong-Cheng Yeo, Huay-Cheem Tan, and Poay-Huan Loh
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COVID-19 ,telemedicine ,telehealth ,ST-segment elevation myocardial infarction ,pandemic ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background: Infectious control measures during the COVID-19 pandemic have led to the propensity toward telemedicine. This study examined the impact of telemedicine during the pandemic on the long-term outcomes of ST-segment elevation myocardial infarction (STEMI) patients.Methods: This study included 288 patients admitted 1 year before the pandemic (October 2018–December 2018) and during the pandemic (January 2020–March 2020) eras, and survived their index STEMI admission. The follow-up period was 1 year. One-year primary safety endpoint was all-cause mortality. Secondary safety endpoints were cardiac readmissions for unplanned revascularisation, non-fatal myocardial infarction, heart failure, arrythmia, unstable angina. Major adverse cardiovascular events (MACE) was defined as the composite outcome of each individual safety endpoint.Results: Despite unfavorable in-hospital outcomes among patients admitted during the pandemic compared to pre-pandemic era, both groups had similar 1-year all-cause mortality (11.2 vs. 8.5%, respectively, p = 0.454) but higher cardiac-related (14.1 vs. 5.1%, p < 0.001) and heart failure readmissions in the pandemic vs. pre-pandemic groups (7.1 vs. 1.7%, p = 0.037). Follow-up was more frequently conducted via teleconsultations (1.2 vs. 0.2 per patient/year, p = 0.001), with reduction in physical consultations (2.1 vs. 2.6 per patient/year, p = 0.043), during the pandemic vs. pre-pandemic era. Majority achieved guideline-directed medical therapy (GDMT) during pandemic vs. pre-pandemic era (75.9 vs. 61.6%, p = 0.010). Multivariable Cox regression demonstrated achieving medication target doses (HR 0.387, 95% CI 0.164–0.915, p = 0.031) and GDMT (HR 0.271, 95% CI 0.134–0.548, p < 0.001) were independent predictors of lower 1-year MACE after adjustment.Conclusion: The pandemic has led to the wider application of teleconsultation, with increased adherence to GDMT, enhanced medication target dosing. Achieving GDMT was associated with favorable long-term prognosis.
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- 2021
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21. Attitudes toward COVID-19 vaccination and willingness to pay: comparison of people with and without mental disorders in China
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Fengyi Hao, Bokun Wang, Wanqiu Tan, Syeda Fabeha Husain, Roger S. McIntyre, Xiangdong Tang, Ling Zhang, Xiaofan Han, Li Jiang, Nicholas W. S. Chew, Benjamin Yong-Qiang Tan, Bach Tran, Zhisong Zhang, Gia Linh Vu, Giang Thu Vu, Roger Ho, Cyrus S. Ho, and Vijay K. Sharma
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Anxiety ,COVID-19 ,depression ,insomnia ,vaccine ,Psychiatry ,RC435-571 - Abstract
Background Acceptance and willingness to pay for the COVID-19 vaccine are unknown. Aims We compared attitudes toward COVID-19 vaccination in people suffering from depression or anxiety disorder and people without mental disorders, and their willingness to pay for it. Method Adults with depression or anxiety disorder (n = 79) and healthy controls (n = 134) living in Chongqing, China, completed a cross-sectional study between 13 and 26 January 2021. We used a validated survey to assess eight aspects related to attitudes toward the COVID-19 vaccines. Psychiatric symptoms were assessed by the 21-item Depression, Anxiety and Stress Scale. Results Seventy-six people with depression or anxiety disorder (96.2%) and 134 healthy controls (100%) reported willingness to receive the COVID-19 vaccine. A significantly higher proportion of people with depression or anxiety disorder (64.5%) were more willing to pay for the COVID-19 vaccine than healthy controls (38.1%) (P ≤ 0.001). After multivariate adjustment, severity of depression and anxiety was significantly associated with willingness to pay for COVID-19 vaccination among psychiatric patients (P = 0.048). Non-healthcare workers (P = 0.039), health insurance (P = 0.003), living with children (P = 0.006) and internalised stigma (P = 0.002) were significant factors associated with willingness to pay for COVID-19 vaccine in healthy controls. Conclusions To conclude, psychiatric patients in Chongqing, China, showed high acceptance and willingness to pay for the COVID-19 vaccine. Factors associated with willingness to pay for the COVID-19 vaccine differed between psychiatric patients and healthy controls.
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- 2021
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22. Asian-Pacific perspective on the psychological well-being of healthcare workers during the evolution of the COVID-19 pandemic
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Nicholas W. S. Chew, Jinghao Nicholas Ngiam, Benjamin Yong-Qiang Tan, Sai-Meng Tham, Celine Yan-Shan Tan, Mingxue Jing, Renarebecca Sagayanathan, Jin Tao Chen, Lily Y. H. Wong, Aftab Ahmad, Faheem Ahmed Khan, Maznah Marmin, Fadhlina Binte Hassan, Tai Mei-Ling Sharon, Chin Han Lim, Mohamad Iqbal Bin Mohaini, Rivan Danuaji, Thang H. Nguyen, Georgios Tsivgoulis, Sotirios Tsiodras, Paraskevi C. Fragkou, Dimitra Dimopoulou, Arvind K. Sharma, Kenam Shah, Bhargesh Patel, Suktara Sharma, R. N. Komalkumar, R. V. Meenakshi, Shikha Talati, Hock Luen Teoh, Cyrus S. Ho, Roger C. Ho, and Vijay K. Sharma
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COVID-19 ,healthcare workers ,psychological impact ,pandemic ,Asia-Pacific ,Psychiatry ,RC435-571 - Abstract
BackgroundThe coronavirus disease 2019 (COVID-19) pandemic has led to significant strain on front-line healthcare workers.AimsIn this multicentre study, we compared the psychological outcomes during the COVID-19 pandemic in various countries in the Asia-Pacific region and identified factors associated with adverse psychological outcomes.MethodFrom 29 April to 4 June 2020, the study recruited healthcare workers from major healthcare institutions in five countries in the Asia-Pacific region. A self-administrated survey that collected information on prior medical conditions, presence of symptoms, and scores on the Depression Anxiety Stress Scales and the Impact of Events Scale-Revised were used. The prevalence of depression, anxiety, stress and post-traumatic stress disorder (PTSD) relating to COVID-19 was compared, and multivariable logistic regression identified independent factors associated with adverse psychological outcomes within each country.ResultsA total of 1146 participants from India, Indonesia, Singapore, Malaysia and Vietnam were studied. Despite having the lowest volume of cases, Vietnam displayed the highest prevalence of PTSD. In contrast, Singapore reported the highest case volume, but had a lower prevalence of depression and anxiety. In the multivariable analysis, we found that non-medically trained personnel, the presence of physical symptoms and presence of prior medical conditions were independent predictors across the participating countries.ConclusionsThis study highlights that the varied prevalence of psychological adversity among healthcare workers is independent of the burden of COVID-19 cases within each country. Early psychological interventions may be beneficial for the vulnerable groups of healthcare workers with presence of physical symptoms, prior medical conditions and those who are not medically trained.
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- 2020
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23. Cognitive Impairment in Heart Failure—A Review
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Fang Qin Goh, William K. F. Kong, Raymond C. C. Wong, Yao Feng Chong, Nicholas W. S. Chew, Tiong-Cheng Yeo, Vijay Kumar Sharma, Kian Keong Poh, and Ching-Hui Sia
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heart failure ,cognitive impairment ,dementia ,cerebral haemodynamics ,Biology (General) ,QH301-705.5 - Abstract
Cognitive impairment (CI) is common in heart failure (HF). Patients with HF demonstrate reduced global cognition as well as deficits in multiple cognitive domains compared to controls. Degree of CI may be related to HF severity. HF has also been associated with an increased risk of dementia. Anatomical brain changes have been observed in patients with HF, including grey matter atrophy and increased white matter lesions. Patients with HF and CI have poorer functional independence and self-care, more frequent rehospitalisations as well as increased mortality. Pathophysiological pathways linking HF and CI have been proposed, including cerebral hypoperfusion and impaired cerebrovascular autoregulation, systemic inflammation, proteotoxicity and thromboembolic disease. However, these mechanisms are poorly understood. We conducted a search on MEDLINE, Embase and Scopus for original research exploring the connection between HF and CI. We then reviewed the relevant literature and discuss the associations between HF and CI, the patterns of brain injury in HF and their potential mechanisms, as well as the recognition and management of CI in patients with HF.
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- 2022
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