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Sahranavard T, Soflaei SS, Alimi R, Pourali G, Nasrabadi M, Yadollahi A, Sharifi S, Alimi H, Shahri B, Ghalibaf AM, Metanat S, Ferns GA, Moohebati M, Ghayour-Mobarhan M. Factors associated with prolonged QTc interval in Iranian population: MASHAD cohort study. J Electrocardiol 2024; 84:112-122. [PMID: 38631278 DOI: 10.1016/j.jelectrocard.2024.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 04/03/2024] [Accepted: 04/09/2024] [Indexed: 04/19/2024]
Abstract
AIM QTc interval prolongation is a growing global issue which can cause torsades de pointes, a potentially fatal arrhythmia. We aimed to identify risk factors for prolonged QT interval in men and women. METHODS The Mashhad stroke and heart atherosclerotic disorder (MASHAD) cohort study collected electrocardiogram interval data. QT was corrected for heart rate using the Bazett's formula. Ordinal logistic regression with crude (univariable) and adjusted (multivariate) association analyses in the form of odds ratio and corresponding 95% confidence interval (CI) were used to identify the factors associated with QTc prolongation. RESULTS A total of 8878 individuals including 5318 females and 3560 males, aged 35 to 65 years, were included in this cross-sectional study. Participants with QTc prolongation were more likely to be older and have hypercholesterolemia, hypertension (HTN), and Type 2 diabetes mellitus (T2DM), but to have lower levels of physical activity (P < 0.05). Age (OR = 1.68, 95%CI = 1.18-2.39), hypercholesterolemia (OR = 1.77, 95%CI = 1.24-2.51), HTN (OR = 1.36, 95%CI = 1.06-1.73), T2DM (OR = 1.59, 95%CI = 1.19-2.13), severe anxiety (OR = 1.80, 95%CI = 1.05-3.11) and mild depression (OR = 1.38, 95%CI = 1.01-1.88) were independent risk factors for prolonged QTc interval in men. For women, only HTN (OR = 1.29, 95%CI = 1.02-1.63) and T2DM (OR = 1.50, 95%CI = 1.14-1.97) were independent risk factors. CONCLUSIONS Older age, Hypercholesterolemia, HTN, T2DM, severe anxiety and mild depression in men, and HTN and T2DM in women were associated with high risk of prolonged QTc interval. Healthcare practitioners should be aware of the risk factors of QTc interval prolongation and should exercise caution in the management of certain patients.
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Affiliation(s)
- Toktam Sahranavard
- International UNESCO Center for Health-Related Basic Sciences and Human Nutrition, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Sara Saffar Soflaei
- International UNESCO Center for Health-Related Basic Sciences and Human Nutrition, Mashhad University of Medical Sciences, Mashhad, Iran; Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Rasoul Alimi
- Department of Epidemiology and Biostatistics, School of Health, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran
| | - Ghazaleh Pourali
- Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohamad Nasrabadi
- Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Asal Yadollahi
- Department of Cardiovascular Diseases, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Shima Sharifi
- Department of Cardiovascular Diseases, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hedieh Alimi
- Vascular and Endovascular Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Bahram Shahri
- Department of Cardiovascular Diseases, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Sepehr Metanat
- Center for Orthopedic Trans-Disciplinary Applied Research, Tehran University of Medical Sciences, Tehran, Iran
| | - Gordon A Ferns
- Division of Medical Education, Brighton & Sussex Medical School, Falmer, Brighton, Sussex, UK
| | - Mohsen Moohebati
- Heart and Vascular Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Cardiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Majid Ghayour-Mobarhan
- International UNESCO Center for Health-Related Basic Sciences and Human Nutrition, Mashhad University of Medical Sciences, Mashhad, Iran; Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
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Kuhn M, Kohlbrenner D, Sievi NA, Clarenbach CF. Increasing Daily Physical Activity and Its Effects on QTc Time in Severe to Very Severe COPD: A Secondary Analysis of a Randomised Controlled Trial. COPD 2022; 19:339-344. [PMID: 36166273 DOI: 10.1080/15412555.2022.2101992] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Approximately, half of COPD patients die from cardiovascular diseases. A prolongation of cardiac repolarization (measured as QTc interval) is associated with cardiovascular events or cardiovascular deaths in populations of older adults and COPD. One way to reduce the QTc could be to increase physical activity (PA). We investigated whether QTc can be reduced by an increase in PA in patients with severe COPD. This is a secondary outcome analysis from a randomized controlled trial investigating the effects of a 3 months pedometer based program to improve PA. 12-lead ECG was assessed at baseline and after 3 months. We measured PA using a validated triaxial accelerometer. Data were analyzed from 59 participants. Multiple regression modeling, including adjustment for baseline QTc, sex, QT prolonging medications, BMI, smoking status and FEV1%, showed no evidence for an association between an improvement of ≥15% PA and QTc reduction. A 15% improvement in PA according to step counts over 3 months seems not to reduce QTc interval by its MCID of 20 ms in patients with severe to very severe COPD.
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Affiliation(s)
- Manuel Kuhn
- Faculty of Medicine, University of Zurich, Zurich, Switzerland.,Department of Pulmonology, University Hospital Zurich, Zurich, Switzerland
| | - Dario Kohlbrenner
- Faculty of Medicine, University of Zurich, Zurich, Switzerland.,Department of Pulmonology, University Hospital Zurich, Zurich, Switzerland
| | - Noriane A Sievi
- Department of Pulmonology, University Hospital Zurich, Zurich, Switzerland
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No evidence of association between habitual physical activity and ECG traits: Insights from the electronic Framingham Heart Study. CARDIOVASCULAR DIGITAL HEALTH JOURNAL 2021; 3:56-58. [PMID: 35265935 PMCID: PMC8890067 DOI: 10.1016/j.cvdhj.2021.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Castagna A, Ruotolo G, Manzo C. Progress in the risk assessment of hydroxychloroquine in frail elderly people. Aging Med (Milton) 2021; 4:53-57. [PMID: 33738381 PMCID: PMC7954841 DOI: 10.1002/agm2.12140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 11/24/2020] [Accepted: 11/24/2020] [Indexed: 01/08/2023] Open
Abstract
Hydroxychloroquine (HCQ) is an antimalarial drug also known to have anti-inflammatory and antiviral effects. The antiviral action of HCQ has been a point of interest for many researchers because of its mechanism of action and the potential use it could have during the current COVID-19 pandemic. However, HCQ can cause QT interval prolongation. The current therapies used in COVID-19 are changing as the pandemic develops. The aim of this article is to promote a validated risk score for QT prolongation in multidimensional assessment of COVID-19 patients, especially in elderly and polypathological patients.
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Affiliation(s)
- Alberto Castagna
- Azienda Sanitaria Provinciale Catanzaro, Primary Care Departiment, Center for Cognitive Disorders and DementiaCatanzaroItaly
| | - Giovanni Ruotolo
- Geriatric UnitGeneral HospitalAzienda Ospedaliera Pugliese‐Ciaccio di CatanzaroCatanzaroItaly
| | - Ciro Manzo
- Azienda Sanitaria Locale Napoli 3 SudInternal and Geriatric Medicine Department ‐ Gerontorheumatological Outpatient ClinicPoliambulatorio “Mariano Lauro” ‐ Distretto Sanitario 59NaplesItaly
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Castagna A, Ruotolo G, Manzo C. Hydroxychloroquine and QT Prolongation in Older Patients with Rheumatic Diseases: Who is afraid of the Boogeyman? We are not! Mediterr J Rheumatol 2021; 31:433-435. [PMID: 33521580 PMCID: PMC7841093 DOI: 10.31138/mjr.31.4.433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 09/07/2020] [Accepted: 09/30/2020] [Indexed: 11/04/2022] Open
Affiliation(s)
- Alberto Castagna
- Azienda Sanitaria Provinciale Catanzaro, Geriatric Medicine department - Fragility Outpatient Clinic, Casa della Salute Chiaravalle Centrale, Catanzaro, Italy
| | - Giovanni Ruotolo
- Azienda Ospedaliera Pugliese-Ciaccio di Catanzaro, Geriatric Unit, General Hospital, Catanzaro, Italy
| | - Ciro Manzo
- Azienda Sanitaria Locale Napoli 3 sud, Internal and Geriatric Medicine department - Geronthorheumatological Outpatient Clinic, poliambulatorio "Mariano Lauro", Sant'Agnello, Naples, Italy
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Kose Y, Ikenaga M, Yamada Y, Takeda N, Morimura K, Kimura M, Kiyonaga A, Higaki Y. [Physical parameters and physical function in older drivers with driving-related anxiety: the Nakagawa Study]. Nihon Ronen Igakkai Zasshi 2020; 57:475-483. [PMID: 33268633 DOI: 10.3143/geriatrics.57.475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
AIM This study investigated whether driving-related anxiety was independently associated with physical parameters and physical function in community-dwelling older people. METHODS Participants were 523 community-dwelling older drivers (353 men and 170 women). Participants self-reported driving-related anxiety when driving in familiar environments, and completed physical assessments: visual impairment, auditory impairment, cerebrovascular disease (CVD), hand grip strength, knee extension strength, timed up and go (TUG), chair stand, one leg standing with open eyes, functional reach, vertical jump, preferred gait speed and maximal gait speed. Participants were divided into a driving-related anxiety group (72.8±5.1 years; 21 men, seven women) and a no-anxiety (non-anxiety) group (70.7±4.7 years; 325 men, 163 women). We examined physical performance differences between the anxiety and non-anxiety groups using analysis of covariance, and investigated the relationship between anxiety, physical function and performance using logistic regression analysis (forward stepwise selection). RESULTS The driving-related anxiety group was significantly older, with higher rates of visual impairment, auditory impairment, and CVD than the non-anxiety group. The anxiety group exhibited independently poorer TUG and maximal gait speed (P<0.05 for both). Logistic regression analysis revealed significant relationships between anxiety and visual impairment (odds ratio [OR]: 5.6, 95% confidence interval [CI]: 2.5-12.6), auditory impairment (OR: 3.0, 95% CI: 1.3-7.0), TUG (OR: 1.46, 95% CI: 1.1-1.9) and CVD (OR: 3.1, 95% CI: 1.0-9.4) (P<0.05 for all). CONCLUSIONS Driving-related anxiety was significantly associated with worse physical performance, visual impairment, auditory impairment, and CVD in community-dwelling older drivers.
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Affiliation(s)
- Yujiro Kose
- Faculty of Sports and Health Science, Fukuoka University.,The Fukuoka University Institute for Physical Activity, Fukuoka University
| | - Masahiro Ikenaga
- The Fukuoka University Institute for Physical Activity, Fukuoka University
| | - Yosuke Yamada
- Department of Nutritional Science, National Institutes of Biomedical Innovation, Health and Nutrition.,Institute of Interdisciplinary Research, Kyoto University of Advanced Science
| | | | - Kazuhiro Morimura
- Department of Education Psychology, Faculty of Education, Shujitsu University
| | - Misaka Kimura
- The Fukuoka University Institute for Physical Activity, Fukuoka University.,Institute of Interdisciplinary Research, Kyoto University of Advanced Science
| | - Akira Kiyonaga
- Faculty of Sports and Health Science, Fukuoka University.,The Fukuoka University Institute for Physical Activity, Fukuoka University
| | - Yasuki Higaki
- Faculty of Sports and Health Science, Fukuoka University.,The Fukuoka University Institute for Physical Activity, Fukuoka University
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Takae R, Hatamoto Y, Yasukata J, Kose Y, Komiyama T, Ikenaga M, Yoshimura E, Yamada Y, Ebine N, Higaki Y, Tanaka H. Association of Lower-Extremity Muscle Performance and Physical Activity Level and Intensity in Middle-Aged and Older Adults: A Doubly Labeled Water and Accelerometer Study. J Nutr Health Aging 2020. [DOI: 10.1007/s12603-020-1514-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Association between Work-Related Stress and QT Prolongation in Male Workers. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16234781. [PMID: 31795277 PMCID: PMC6926840 DOI: 10.3390/ijerph16234781] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 11/26/2019] [Accepted: 11/27/2019] [Indexed: 12/21/2022]
Abstract
Background: Work-related stress is a potential cardiovascular risk factor, but the underlying mechanism is not fully explained. The autonomic nervous system control of cardiac function might play a specific role; therefore, monitoring the QT interval in the electrocardiogram can highlight an autonomic imbalance induced by occupational stressors. The aim of our study was to explore the QT interval parameters as early indicators of imbalance of the autonomic cardiac function in relation to work-related stress. Methods: During 2015–2016 annual workplace health surveillance, we measured work-related stress in 484 workers of a logistic support company using the Health and Safety Executive (HSE) tool. We assessed the frequency-corrected QT (QTc) interval and the QT index (QTi) on the electrocardiogram of each participant, and collected demographic and clinical data. We compared the QTc values by the four Karasek’s categories (active/passive jobs, low/high strain job), and by job support (present/lacking), and conducted multivariate analysis to adjust for possible confounders. Results: The results of the multivariate regression analysis showed that QTc was prolonged among workers operating at a specific site where stress level was found to be elevated. Regular physical activity showed a beneficial effect against QTc prolongation. We did not observe an effect on QTc length by the cross-combined Karasek’s categories of job control, job demand, and job support. Conclusions: Our study suggests subclinical effects of conditions associated with work-related stress on the autonomic regulation of cardiac function. Further research is warranted to elucidate the combined effect of work organization and lifestyle factors on autonomic cardiac function.
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Takae R, Hatamoto Y, Yasukata J, Kose Y, Komiyama T, Ikenaga M, Yoshimura E, Yamada Y, Ebine N, Higaki Y, Tanaka H. Physical Activity and/or High Protein Intake Maintains Fat-Free Mass in Older People with Mild Disability; the Fukuoka Island City Study: A Cross-Sectional Study. Nutrients 2019; 11:nu11112595. [PMID: 31671741 PMCID: PMC6893506 DOI: 10.3390/nu11112595] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 10/21/2019] [Accepted: 10/22/2019] [Indexed: 12/21/2022] Open
Abstract
Body composition changes with age, with fat mass (FM) increasing and fat-free mass (FFM) decreasing. Higher physical activity and high or adequate protein intake are thought to be beneficial in preventing the loss of skeletal muscle mass in the elderly. We aimed to investigate the relationships between physical activity, protein intake, and FFM in older people with mild disability. Total energy expenditure (TEE) under free-living conditions was assessed using the doubly-labelled water (DLW) method, and physical activity was measured using a triaxial accelerometer. Dietary intake was assessed using a self-recorded food intake diary during the DLW period. Percent FFM was significantly positively correlated with protein intake and physical activity level (PAL) after adjustment for age and sex (protein intake r = 0.652, p < 0.001, PAL r = 0.345, p = 0.011). In multiple linear regression analysis, when PAL, moderate-to-vigorous physical activity (MVPA), or protein intake were included, 31%, 32%, and 55%, respectively, of the variation in %FFM was explained. Moreover, the addition of both PAL/MVPA and protein intake explained 61%/60%, respectively, of the variation in %FFM. Either protein intake above the currently recommended level or higher levels of physical activity would be beneficial for the maintenance of high %FFM.
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Affiliation(s)
- Rie Takae
- Graduate School of Sports and Health Science, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan.
| | - Yoichi Hatamoto
- Institute for Physical Activity, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan.
- Department of Nutrition and Metabolism, National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health, and Nutrition, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8636, Japan.
| | - Jun Yasukata
- Institute for Physical Activity, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan.
- Faculty of Sports and Health Science, Fukuoka University, Fukuoka, 8-19-1 Nanakuma Jonan-ku, Fukuoka-shi, Fukuoka 814-0180, Japan.
| | - Yujiro Kose
- Institute for Physical Activity, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan.
- Faculty of Sports and Health Science, Fukuoka University, Fukuoka, 8-19-1 Nanakuma Jonan-ku, Fukuoka-shi, Fukuoka 814-0180, Japan.
| | - Takaaki Komiyama
- Graduate School of Sports and Health Science, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan.
- Center for Education in Liberal Arts and Sciences, Osaka University, 1-17 Machikaneyamachou, Toyonaka, Osaka 560-0043, Japan.
| | - Masahiro Ikenaga
- Institute for Physical Activity, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan.
| | - Eiichi Yoshimura
- Department of Food and Health Sciences, Prefectural University of Kumamoto Faculty of Environmental and Symbiotic Sciences, 3-1-100 Tsukide, Higashi-ku, Kumamoto 862-8502, Japan.
| | - Yosuke Yamada
- Department of Nutrition and Metabolism, National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health, and Nutrition, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8636, Japan.
| | - Naoyuki Ebine
- Faculty of Health and Sports Science, Doshisha University, 1-3 Miyakodani Tatara, Kyotanabe-shi, Kyoto 610-0394, Japan.
| | - Yasuki Higaki
- Institute for Physical Activity, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan.
- Faculty of Sports and Health Science, Fukuoka University, Fukuoka, 8-19-1 Nanakuma Jonan-ku, Fukuoka-shi, Fukuoka 814-0180, Japan.
| | - Hiroaki Tanaka
- Institute for Physical Activity, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan.
- Faculty of Sports and Health Science, Fukuoka University, Fukuoka, 8-19-1 Nanakuma Jonan-ku, Fukuoka-shi, Fukuoka 814-0180, Japan.
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Ma T, Cai J, Zhu YS, Chu XF, Wang Y, Shi GP, Wang ZD, Yao S, Wang XF, Jiang XY. Association between a frailty index based on common laboratory tests and QTc prolongation in older adults: the Rugao Longevity and Ageing Study. Clin Interv Aging 2018; 13:797-804. [PMID: 29731619 PMCID: PMC5927057 DOI: 10.2147/cia.s149791] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Risk factors for heart rate-corrected QT interval (QTc) proglongation should be explored to stratify high-risk individuals to aid the prevention of incident cardiovascular events and mortality. The diversity of risk factors for QTc prolongation suggests that use of the frailty index (FI), indicating general health deficits, may be an effective approach, especially in the elderly, to identify the risk of QTc prolongation. METHODS We used the data of 1,780 individuals aged 70-87 years from the Rugao Longevity and Ageing Study (RuLAS), a community-based longitudinal study. The FI was constructed using 20 routine laboratory tests, plus the body mass index and measures of systolic and diastolic blood pressures (FI-Lab). RESULTS The mean FI-Lab value was 0.24±0.09. The mean heart rate-corrected QT interval (QTc) was 407±38 ms. The prevalence of QTc prolongation was 5.2% in elderly community populations aged 70-87 years. A higher FI-Lab value was associated with a higher risk for QTc prolongation. Each 10% increase in the FI-Lab value increased the odds ratio (OR) by 33% (OR: 1.33; 95% CI: 1.07-1.64). Compared with the lowest quartile, the top quartile FI-Lab score was associated with a 2.50-fold QTc prolongation risk in elderly individuals (95% CI: 1.21-5.19). CONCLUSION An FI based on routine laboratory data can identify older adults at increased risk for QTc prolongation. The FI approach may therefore be useful for the risk stratification of QTc prolongation.
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Affiliation(s)
- Teng Ma
- Unit of Epidemiology, Ministry of Education Key Laboratory of Contemporary Anthropology, Fudan University, Shanghai, People’s Republic of China
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, People’s Republic of China
- National Clinical Research Center for Aging and Medicine (Huashan), Huashan Hospital, Fudan University, Shanghai, People’s Republic of China
| | - Jian Cai
- Department of Neurology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People’s Republic of China
| | - Yin-Sheng Zhu
- Rugao People’s Hospital, Rugao, Jiangsu, People’s Republic of China
| | - Xue-Feng Chu
- Rugao People’s Hospital, Rugao, Jiangsu, People’s Republic of China
| | - Yong Wang
- Rugao People’s Hospital, Rugao, Jiangsu, People’s Republic of China
| | - Guo-Ping Shi
- Rugao People’s Hospital, Rugao, Jiangsu, People’s Republic of China
| | - Zheng-Dong Wang
- Rugao People’s Hospital, Rugao, Jiangsu, People’s Republic of China
| | - Shun Yao
- Unit of Epidemiology, Ministry of Education Key Laboratory of Contemporary Anthropology, Fudan University, Shanghai, People’s Republic of China
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, People’s Republic of China
- National Clinical Research Center for Aging and Medicine (Huashan), Huashan Hospital, Fudan University, Shanghai, People’s Republic of China
| | - Xiao-Feng Wang
- Unit of Epidemiology, Ministry of Education Key Laboratory of Contemporary Anthropology, Fudan University, Shanghai, People’s Republic of China
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, People’s Republic of China
- National Clinical Research Center for Aging and Medicine (Huashan), Huashan Hospital, Fudan University, Shanghai, People’s Republic of China
| | - Xiao-Yan Jiang
- Key Laboratory of Arrhythmias of the Ministry of Education of China, Tongji University School of Medicine, Shanghai, People’s Republic of China
- Department of Pathology and Pathophysiology, Tongji University School of Medicine, Shanghai, People’s Republic of China
- Institute of Medical Genetics, Tongji University, Shanghai, People’s Republic of China
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Kose Y, Ikenaga M, Yamada Y, Morimura K, Takeda N, Ouma S, Tsuboi Y, Yamada T, Kimura M, Kiyonaga A, Higaki Y, Tanaka H. Timed Up and Go test, atrophy of medial temporal areas and cognitive functions in community-dwelling older adults with normal cognition and mild cognitive impairment. Exp Gerontol 2016; 85:81-87. [DOI: 10.1016/j.exger.2016.09.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 09/14/2016] [Accepted: 09/26/2016] [Indexed: 11/26/2022]
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Bhandari B, Kumar L, Datta A, Sircar S. Effect of Sub Maximal Dynamic and Static Exercises on QTc interval in Healthy Young Men. J Clin Diagn Res 2015; 9:CC01-4. [PMID: 26266113 DOI: 10.7860/jcdr/2015/12048.6006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2014] [Accepted: 04/11/2015] [Indexed: 12/24/2022]
Abstract
INTRODUCTION The QTc interval depends largely on cardiac repolarization since the duration of cardiac depolarization is fairly constant in the normal heart. QTc at rest as well as during exercise has many clinical implications. In this study, we have compared the relative effects of dynamic and static exercise on QTc. AIM To measure QTc interval in young men at rest and also assess how it is further modulated by submaximal dynamic and static exercises. MATERIALS AND METHODS This observational study was conducted in the Department of Physiology on 30 non-obese young men randomly selected from the students of our institute after obtaining the consent and institutional ethical clearance. Continuous blood pressure monitoring and ECG recording was done in the subjects. Baseline (pre-exercise), post submaximal dynamic (Harvard's step test) and post submaximal static exercise (hand-grip exercise) recordings of ABP and ECG were taken for analysis. The measured QT interval was corrected for heart rate using the formula of Bazett et al., {QTc=QT/RR(1/2)}.Statistical analysis was done using Graph pad Prism 5 software (California, USA). The baseline and post-exercise data were compared using paired t-test. A p<0.05 was taken to be statistical significant. RESULTS There were statistically significant increases in HR, SBP, DBP and QTc interval after dynamic exercise in comparison to the baseline values (p<0.05). Significant increase in HR (p<0.05) with no significant change in QTc and other cardiovascular parameters were recorded following static exercise (p>0.05). CONCLUSION Significant increase in QTc interval was observed after dynamic exercise, however, no change in QTc was observed following static exercise, and hence we conclude that static exercises may not be useful in assessing the cardiovascular status of an individual or in predicting cardiovascular events.
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Affiliation(s)
- Bharti Bhandari
- Assistant Professor, Department of Physiology, All India Institute of Medical Sciences , Jodhpur, India
| | - Lokesh Kumar
- Undergraduate Student, Department of Physiology, All India Institute of Medical Sciences , Jodhpur, India
| | - Anjum Datta
- Junior Resident, Department of Physiology, All India Institute of Medical Sciences , Jodhpur, India
| | - Sabyasachi Sircar
- Professor and Head, Department of Physiology, All India Institute of Medical Sciences , Jodhpur, India
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