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Heart rate variability and health

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https://www.readbyqxmd.com/read/28539087/artificial-intelligence-methodologies-and-their-application-to-diabetes
#1
Mercedes Rigla, Gema García-Sáez, Belén Pons, Maria Elena Hernando
In the past decade diabetes management has been transformed by the addition of continuous glucose monitoring and insulin pump data. More recently, a wide variety of functions and physiologic variables, such as heart rate, hours of sleep, number of steps walked and movement, have been available through wristbands or watches. New data, hydration, geolocation, and barometric pressure, among others, will be incorporated in the future. All these parameters, when analyzed, can be helpful for patients and doctors' decision support...
May 1, 2017: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/28536533/heart-rate-fragmentation-a-new-approach-to-the-analysis-of-cardiac-interbeat-interval-dynamics
#2
Madalena D Costa, Roger B Davis, Ary L Goldberger
Background: Short-term heart rate variability (HRV) is most commonly attributed to physiologic vagal tone modulation. However, with aging and cardiovascular disease, the emergence of high short-term HRV, consistent with the breakdown of the neuroautonomic-electrophysiologic control system, may confound traditional HRV analysis. An apparent dynamical signature of such anomalous short-term HRV is frequent changes in heart rate acceleration sign, defined here as heart rate fragmentation. Objective: The aims were to: (1) introduce a set of metrics designed to probe the degree of sinus rhythm fragmentation; (2) test the hypothesis that the degree of fragmentation of heartbeat time series increases with the participants' age in a group of healthy subjects; (3) test the hypothesis that the heartbeat time series from patients with advanced coronary artery disease (CAD) are more fragmented than those from healthy subjects; and (4) compare the performance of the new fragmentation metrics with standard time and frequency domain measures of short-term HRV...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28535398/nurses-occupational-physical-activity-levels-a-systematic-review
#3
REVIEW
Stephanie E Chappel, Simone J J M Verswijveren, Brad Aisbett, Julie Considine, Nicola D Ridgers
BACKGROUND: Nurses' physical performance at work has implications both for nurses' occupational health and patient care. Although nurses are the largest healthcare workforce, are present 24-hours a day, and engage in many physically demanding tasks, nurses' occupational physical activity levels are poorly understood. OBJECTIVES: The aim of this systematic review was to examine nurses' occupational physical activity levels, and explore how nurses accumulate their physical activity during a shift...
May 10, 2017: International Journal of Nursing Studies
https://www.readbyqxmd.com/read/28534866/-a-comparison-of-methods-for-modeling-factors-associated-with-hospital-admissions-in-incident-cases-of-heart-failure
#4
Francisco Javier Prado-Galbarro, Isabel Del-Cura-González, Sofía Garrido-Elustondo, Ana Estela Gamiño-Arroyo, Carlos Sánchez-Piedra, Antonio Sarriá Santamera
OBJECTIVE: Heart failure (HF) is an important public health problem due to its increasing prevalence, and the decompensation associated with hospital admission represents an increased risk of death. The objective of this study was to compare several methods to model the variable hospitalizations and to determine the effect of factors associated with hospital admissions in incident cases of HF. METHODS: Study of a retrospective cohort of patients with information extracted from electronic medical records of PC was performed...
May 24, 2017: Revista Española de Salud Pública
https://www.readbyqxmd.com/read/28526394/do-high-participation-rates-improve-effects-of-population-based-general-health-checks
#5
A M Bender, T Jørgensen, C Pisinger
The aim is to investigate if the effect of a health check differs between areas with different participation rates. The Inter99 population-based randomized lifestyle intervention study covered 73 areas within the suburbs of Copenhagen, Denmark. Adults aged 30-60years were randomly drawn from a population and were randomized to intervention group (n=11,483) or control group (n=47,122). Participation rates in the health check varied considerably between areas (mean 52%; range 35-85%). In separate survival analyses, area participation rate was included both as a continuous exposure variable and as a categorical variable (tertiles; low: 35-49%, meddle: 50-54%, high: 55-84%)...
May 16, 2017: Preventive Medicine
https://www.readbyqxmd.com/read/28523821/risk-factors-for-early-cardiovascular-mortality-in-patients-with-bipolar-disorder
#6
Shang-Ying Tsai, Chao-Hsien Lee, Pao-Huan Chen, Kuo-Hsuan Chung, Shou-Hung Huang, Chian-Jue Kuo, Wen-Cheng Wu
AIM: We attempted to determine risk factors, particularly pathophysiological changes, for the early cardiovascular mortality in bipolar disorder. METHODS: A total of 5416 in-patients with bipolar I disorder were retrospectively followed through record linkage for cause of death. A total of 35 patients dying from cardiovascular disease (CVD, ICD 9: 401-443) before the age of 65 years were identified. Two living bipolar patients and two mentally healthy adults were matched with each one deceased patient as control subjects according to age (±2 years), sex, and date (±3 years) of the final/index admission or the date of general health screening...
May 18, 2017: Psychiatry and Clinical Neurosciences
https://www.readbyqxmd.com/read/28522086/correlates-of-sleep-quality-in-midlife-and-beyond-a-machine-learning-analysis
#7
Katherine A Kaplan, Prajesh P Hardas, Susan Redline, Jamie M Zeitzer
OBJECTIVES: In older adults, traditional metrics derived from polysomnography (PSG) are not well correlated with subjective sleep quality. Little is known about whether the association between PSG and subjective sleep quality changes with age, or whether quantitative electroencephalography (qEEG) is associated with sleep quality. Therefore, we examined the relationship between subjective sleep quality and objective sleep characteristics (standard PSG and qEEG) across middle to older adulthood...
June 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28501521/associations-between-short-or-long-length%C3%A2-of-stay-and-30-day-readmission-and-mortality-in-hospitalized-patients-with-heart%C3%A2-failure
#8
Maneesh Sud, Bing Yu, Harindra C Wijeysundera, Peter C Austin, Dennis T Ko, Juarez Braga, Peter Cram, John A Spertus, Michael Domanski, Douglas S Lee
OBJECTIVES: This study sought to examine the associations between heart failure (HF)-related hospital length of stay and 30-day readmissions and HF hospital length of stay and mortality rates. BACKGROUND: Although reducing HF readmission and mortality rates are health care priorities, how HF-related hospital length of stay affects these outcomes is not fully known. METHODS: A population-level, multicenter cohort study of 58,230 patients with HF (age >65 years) was conducted in Ontario, Canada between April 1, 2003 and March 31, 2012...
May 10, 2017: JACC. Heart Failure
https://www.readbyqxmd.com/read/28497544/inducing-unconscious-stress-cardiovascular-activity-in-response-to-subliminal-presentation-of-threatening-and-neutral-words
#9
Melanie M van der Ploeg, Jos F Brosschot, Bart Verkuil, Brandon L Gillie, DeWayne P Williams, Julian Koenig, Michael W Vasey, Julian F Thayer
Stress-related cognitive processes may occur outside of awareness, here referred to as unconscious stress, and affect one's physiological state. Evidence supporting this idea would provide necessary clarification of the relationship between psychological stress and cardiovascular (CV) health problems. We tested the hypothesis that increases in mean arterial pressure (MAP) and total peripheral resistance (TPR) and decreases in heart rate variability (HRV) would be larger when threatening stimuli are presented outside of awareness, or subliminally, compared with neutral stimuli...
May 12, 2017: Psychophysiology
https://www.readbyqxmd.com/read/28486422/the-relationship-between-environmental-tobacco-smoke-exposure-and-cardiovascular-disease-and-the-potential-modifying-effect-of-diet-in-a-prospective-cohort-among-american-indians-the-strong-heart-study
#10
Sarah Rajkumar, Amanda M Fretts, Barbara V Howard, Fawn Yeh, Maggie L Clark
American Indians experience high rates of cardiovascular diseases (CVD). Environmental tobacco smoke (ETS) has been linked to CVD, possibly due to pro-inflammatory and oxidative stress pathways. We examined the relationship between self-reported exposure to ETS and fatal and nonfatal CVD incidence using Cox proportional hazards models among 1843 non-smoking American Indians participating in the Strong Heart Study. We also evaluated potential modifying effects of several dietary nutrients high in anti-inflammatory and anti-oxidant properties with ETS exposure on fatal and nonfatal CVD by creating interaction terms between ETS exposure and the dietary variable...
May 9, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28482730/buccal-telomere-length-and-its-associations-with-cortisol-heart-rate-variability-heart-rate-and-blood-pressure-responses-to-an-acute-social-evaluative-stressor-in-college-students
#11
Alex Woody, Katrina Hamilton, Irina E Livitz, Wilson S Figueroa, Peggy M Zoccola
Understanding the relationship between stress and telomere length (a marker of cellular aging) is of great interest for reducing aging-related disease and death. One important aspect of acute stress exposure that may underlie detrimental effects on health is physiological reactivity to the stressor. The current study tested the relationship between buccal telomere length and physiological reactivity (salivary cortisol reactivity and total output, heart rate variability, blood pressure, and heart rate) to an acute psychosocial stressor in a sample of 77 (53% male) healthy young adults...
May 8, 2017: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/28481761/the-impact-of-narrative-expressive-writing-on-heart-rate-heart-rate-variability-and-blood-pressure-following-marital-separation
#12
Kyle J Bourassa, John J B Allen, Matthias R Mehl, David A Sbarra
OBJECTIVE: Divorce is a common stressor that is associated with increased risk for poor long-term physical and mental health. Using an experimental design, the current study examined the impact of expressive writing (EW) on average heart rate (HR), heart rate variability (HRV), and blood pressure (BP) 7.5 months later. METHODS: Participants from a community sample of recently separated adults (N=109) were assigned to one of three conditions, traditional EW, narrative EW, or a control writing condition, and assessed three times over an average of 7...
May 5, 2017: Psychosomatic Medicine
https://www.readbyqxmd.com/read/28481376/recovery-of-rescuers-from-a-24-h-shift-and-its-association-with-aerobic-fitness
#13
Katariina Lyytikäinen, Leena Toivonen, Esa Hynynen, Harri Lindholm, Heikki Kyröläinen
OBJECTIVES: Rescuers work in 24-h shifts and the demanding nature of the occupation requires adequate recovery between work shifts. The purpose of this study has been to find out what kind of changes in autonomic control may be seen during work shift and its recovery period in the case of rescuers. An additional interest has been to see if aerobic fitness is associated with recovery from work shifts. MATERIAL AND METHODS: Fourteen male rescuers (aged 34±9 years old) volunteered to participate in the study...
May 8, 2017: International Journal of Occupational Medicine and Environmental Health
https://www.readbyqxmd.com/read/28472190/on-the-health-paradox-of-occupational-and-leisure-time-physical-activity-using-objective-measurements-effects-on-autonomic-imbalance
#14
David M Hallman, Marie Birk Jørgensen, Andreas Holtermann
OBJECTIVE: Leisure-time physical activity (LTPA) has considerable benefits for cardiovascular health and longevity, while occupational physical activity (OPA) is associated with an elevated cardiovascular risk. This "health paradox" may be explained by different effects on the autonomic nervous system from OPA and LTPA. Thus, we aimed to investigate whether objectively measured OPA and LTPA are differentially associated with autonomic regulation among workers. METHODS: The study comprised 514 blue-collar workers from the Danish cohort DPHACTO...
2017: PloS One
https://www.readbyqxmd.com/read/28465771/clinical-characteristics-and-unmet-need-among-patients-with-atherosclerotic-cardiovascular-disease-stratified-by-statin-use
#15
Qing Huang, Michael Grabner, Robert J Sanchez, Vincent J Willey, Mark J Cziraky, Swetha R Palli, Thomas P Power
BACKGROUND: The American College of Cardiology (ACC)/American Heart Association (AHA) 2013 guidelines for blood cholesterol treatment recommend high-intensity statins for adults with atherosclerotic cardiovascular disease (ASCVD). Currently, little is known about the real-world patient characteristics of ASCVD, as well as the clinical and economic consequences of different treatment options for this disease. OBJECTIVES: To compare the demographic, clinical, and economic characteristics of patients with clinical ASCVD who started therapy with high-intensity statins, low-/moderate-intensity statins, or no statins in usual-care settings based on data primarily before the release of the ACC/AHA 2013 guidelines...
November 2016: American Health & Drug Benefits
https://www.readbyqxmd.com/read/28461765/the-efficacy-of-a-preparatory-phase-of-a-touch-based-approach-in-treating-chronic-low-back-pain-a-randomized-controlled-trial
#16
Federico Zangrando, Giulia Piccinini, Clara Tagliolini, Gabriella Marsilli, Marco Iosa, Maria Chiara Vulpiani, Teresa Paolucci
BACKGROUND: Massage therapy is an important element of rehabilitation in the treatment of chronic low back pain (CLBP). The objective of this study was to determine the relative efficacy of massage therapy between traditional massage and a new massage approach for CLBP. We also examined whether any reduction in pain was linked to interoceptive awareness and parasympathetic activation. METHODS: A single-blind, randomized, controlled trial of 51 patients who were allocated into a traditional massage therapy group (TMG; N=24, mean age: 50...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28458305/periodontal-treatment-and-the-risks-of-cardiovascular-disease-in-patients-with-type-2-diabetes-a-retrospective-cohort-study
#17
Chiung-Huei Peng, Yi-Sun Yang, Kuei-Chuan Chan, Edy Kornelius, Jeng-Yuan Chiou, Chien-Ning Huang
Objective Periodontal disease may predispose individuals to cardiovascular disease (CVD). Diabetes mellitus, especially in patients with severe periodontitis, increases the risk of CVD mortality. However, the outcomes of periodontal therapy vary among the different treatment modalities. We aim to investigate whether periodontal treatment could influence the occurrence of CVD in patients with type 2 diabetes and periodontal problems. Methods A retrospective cohort study was conducted based on a dataset released by Taiwan National Health Insurance (NHI)...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28453522/potential-biological-pathways-linking-type-d-personality-and-poor-health-a-cross-sectional-investigation
#18
Vera K Jandackova, Julian Koenig, Marc N Jarczok, Joachim E Fischer, Julian F Thayer
BACKGROUND: Type-D personality, defined as a combination of high negative affect and high social isolation, has been associated with poor health outcomes. However, pathways underlying this association are largely unknown. We investigated the relationship between Type-D personality and several biological and behavioral pathways including the autonomic nervous system, the immune system, glucose regulation and sleep in a large, apparently healthy sample. METHODS: Data from a total of 646 respondents (age 41...
2017: PloS One
https://www.readbyqxmd.com/read/28452399/does-the-ability-to-express-different-emotions-predict-different-indices-of-physical-health-a-skill-based-study-of-physical-symptoms-and-heart-rate-variability
#19
Natalie L Tuck, Kathryn S Adams, Nathan S Consedine
OBJECTIVES: The outward expression of emotion has been frequently associated with better health outcomes, whereas suppressing emotion is thought to contribute to worse physical health. However, work has typically focused on trait expressive tendencies and the possibility that individual differences in the ability to express specific emotions may also be associated with health has not been widely tested. DESIGN: A cross-sectional study of community dwelling adults...
April 28, 2017: British Journal of Health Psychology
https://www.readbyqxmd.com/read/28444025/risk-of-misinterpretation-of-trends-in-hospital-admissions-for-primary-care-sensitive-conditions-in-local-contexts-itabora%C3%A3-rio-de-janeiro-state-brazil-2006-2011
#20
Janaina Furtado Botelho, Margareth Crisóstomo Portela
The study's objectives were to describe hospital admissions for primary care sensitive conditions (PCSCs) among residents of Itaboraí, a municipality in Rio de Janeiro State, Brazil, with a high rate of such admissions, to identify associated factors, and to explore the impact from closing a hospital. The ultimate aim was to contribute to the debate on the indicator's indiscriminate use for inferences on the expansion and quality of primary care. The study was based on data from the Hospital Information System of the Brazilian Unified National Health System...
April 20, 2017: Cadernos de Saúde Pública
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