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Heart rate variability and health

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https://www.readbyqxmd.com/read/28211138/nocturnal-autonomic-nervous-system-activity-and-morning-proinflammatory-cytokines-in-young-adult-african-americans
#1
Kimberly A Bell, Ihori Kobayashi, Yuanxiu Chen, Thomas A Mellman
Compromised sleep and increased sympathetic nervous system (SNS) activity are implicated in the pathogenesis of, and disparities in, cardiovascular disease. Parasympathetic dominance during sleep may be important for cardiovascular health. Sleep and autonomic balance influence immune activity, which impacts atherogenesis. We evaluated relationships between autonomic balance during sleep and morning levels of the immune activating cytokines, C-reactive protein (CRP) and interleukin (IL)-6. Ninety-four (59 female) young adult African Americans without medical conditions and substance use disorders spent 2 consecutive nights in a clinical research unit for sleep recordings and blood drawing on awakening...
February 17, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28196524/financial-barriers-and-adverse-clinical-outcomes-among-patients-with-cardiovascular-related-chronic-diseases-a-cohort-study
#2
David J T Campbell, Braden J Manns, Robert G Weaver, Brenda R Hemmelgarn, Kathryn M King-Shier, Claudia Sanmartin
BACKGROUND: Some patients with cardiovascular-related chronic diseases such as diabetes and heart disease report financial barriers to achieving optimal health. Previous surveys report that the perception of having a financial barrier is associated with self-reported adverse clinical outcomes. We sought to confirm these findings using linked survey and administrative data to determine, among patients with cardiovascular-related chronic diseases, if there is an association between perceived financial barriers and the outcomes of: (1) disease-related hospitalizations, (2) all-cause mortality and (3) inpatient healthcare costs...
February 15, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28181776/cardiovascular-adjustments-to-heat-stress-during-prolonged-exercise
#3
Luna Rizzo, Martin W Thompson
Prolonged effort in hot environments is increasing popular in extreme sports. The number of long distance athletes taking part in races in extremely warm condition, as in deserts, is larger than in the past and also the race distances are increased thus. The demanding for the heart function are higher than those challenged in the past only by few athletes and in easier conditions. This puts news challenges on the professional involved in these activities and there is a need to better understand how the cardiocirculatory system responses in these extreme environmental conditions...
February 8, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28159399/particulate-and-gaseous-pollutants-on-inflammation-thrombosis-and-autonomic-imbalance-in-subjects-at-risk-for-cardiovascular-disease
#4
Szu-Ying Chen, Chang-Chuan Chan, Ta-Chen Su
This study examined effects of short-term urban air pollution exposures on inflammation, thrombosis, and autonomic imbalance in subjects at risk for cardiovascular disease (CVD). We enrolled 61 patients with multiple CVD risk factors and measured high sensitive C-reactive protein (hs-CRP), fibrinogen, D-dimer, and heart rate variability (HRV) indices. Two health examinations for each participant were performed during December 2002 through September 2003. Changes in inflammation and thrombotic markers and HRV indices with exposures to PM2...
January 31, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28152451/can-natural-ways-to-stimulate-the-vagus-nerve-improve-seizure-control
#5
REVIEW
Alan W C Yuen, Josemir W Sander
The vagus nerve (VN) is the longest cranial nerve, innervating the neck, thorax and abdomen, with afferent fibers transmitting a range of interoceptive stimuli and efferent fibres to somatic structures and autonomic preganglions. Over the last few decades, electrical stimulation of the VN using implanted devices (VNS) has been developed leading to its approval for the treatment of epilepsy and depression. More recently, non-invasive devices to stimulation the VN have been developed. The VN has many functions and the activity that is most amenable to assessment is its effect in controlling the cardiac rhythm...
January 30, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28146259/increased-cardiac-sympathetic-activity-and-oxidative-stress-in-habitual-electronic-cigarette-users-implications-for-cardiovascular-risk
#6
Roya S Moheimani, May Bhetraratana, Fen Yin, Kacey M Peters, Jeffrey Gornbein, Jesus A Araujo, Holly R Middlekauff
Importance: Electronic cigarettes (e-cigarettes) have gained unprecedented popularity, but virtually nothing is known about their cardiovascular risks. Objective: To test the hypothesis that an imbalance of cardiac autonomic tone and increased systemic oxidative stress and inflammation are detectable in otherwise healthy humans who habitually use e-cigarettes. Design, Setting, and Participants: Cross-sectional case-control study of habitual e-cigarette users and nonuser control individuals from 2015 to 2016 at the University of California, Los Angeles...
February 1, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/28139727/cortisol-awakening-response-and-acute-stress-reactivity-in-first-nations-people
#7
Maximus Berger, Anthony Leicht, Angela Slatcher, Ann Katrin Kraeuter, Sarangan Ketheesan, Sarah Larkins, Zoltán Sarnyai
First Nations people globally have a higher incidence of mental disorders and non-communicable diseases. These health inequalities are partially attributed to a complex network of social and environmental factors which likely converge on chronic psychosocial stress. We hypothesized that alterations in stress processing and the regulation of the hypothalamic-pituitary-adrenal axis might underlie health disparities in First Nations people. We assessed the cortisol awakening response and the dynamic response to a laboratory induced psychosocial stress of young Indigenous tertiary students (n = 11, mean age 23...
January 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28137520/the-correlation-between-pulse-diagnosis-and-constitution-identification-in-traditional-chinese-medicine
#8
Han-Kuei Wu, Yu-Shien Ko, Yu-Sheng Lin, Hau-Tieng Wu, Tung-Hu Tsai, Hen-Hong Chang
OBJECTIVES: Our study aimed to correlate pulse wave parameters such as augmentation index (AI) and heart rate variability with traditional Chinese medicine (TCM) constitution for evaluating health status. DESIGN: Out of 177 subjects, 69 healthy subjects were enrolled in the present study, and others were excluded because of cardiovascular, liver, kidney, or other diseases. Each subject was invited to complete pulse wave examination and the Constitution in Chinese Medicine Questionnaire...
February 2017: Complementary Therapies in Medicine
https://www.readbyqxmd.com/read/28131974/autonomic-cardiac-regulation-blood-pressure-and-cardiorespiratory-fitness-responses-to-different-training-doses-over-a-12-week-group-program-in-the-elderly
#9
A J McKune, B Peters, S S Ramklass, J van Heerden, C Roberts, J Krejčí, M Botek
AIM: The study assessed the effects of different weekly training frequencies performed over a 12 week exercise programme (strength, endurance, balance) on autonomic cardiac activity, blood pressure and cardiorespiratory fitness (CRF) in elderly individuals. METHODS: Fifty-eight individuals participated in the study: 2TG (N=24, 71.1±6.4 yrs; 19 females, 5 males) performing two, 60min sessions/week; and 3TG (N=34, 72.3±7.9 yrs; 25 females, 9 males) performing three, 60min sessions/week...
January 20, 2017: Archives of Gerontology and Geriatrics
https://www.readbyqxmd.com/read/28128646/effects-of-yoga-versus-hydrotherapy-training-on-health-related-quality-of-life-and-exercise-capacity-in-patients-with-heart-failure-a-randomized-controlled-study
#10
Ewa Hägglund, Inger Hagerman, Kerstin Dencker, Anna Strömberg
AIMS: The aims of this study were to determine whether yoga and hydrotherapy training had an equal effect on the health-related quality of life in patients with heart failure and to compare the effects on exercise capacity, clinical outcomes, and symptoms of anxiety and depression between and within the two groups. METHODS: The design was a randomized controlled non-inferiority study. A total of 40 patients, 30% women (mean±SD age 64.9±8.9 years) with heart failure were randomized to an intervention of 12 weeks, either performing yoga or training with hydrotherapy for 45-60 minutes twice a week...
January 1, 2017: European Journal of Cardiovascular Nursing
https://www.readbyqxmd.com/read/28127042/cardiac-autonomic-regulation-as-a-predictor-for-childhood-obesity-intervention-success
#11
M J Taylor, I Vlaev, D Taylor, M Kulendran, P Gately, A Darzi, M Ahmedna
Childhood obesity is a major public health concern; behavioural interventions induce weight reduction in some, but success is variable. Heart rate variability (HRV) has been associated with impulse control and extent of dieting success. This study investigated the relationship between HRV and post childhood obesity intervention weight-management success, and involved recording the frequency-domain HRV measures LF/HF and HF, and the time-domain measure PNN50. It was expected that greater LF/HF and lower HF would be associated with greater post-intervention weight gain, and that greater PNN50 would be associated with greater impulse control...
January 27, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28126407/effects-by-inhalation-of-abundant-fragrances-in-indoor-air-an-overview
#12
REVIEW
Peder Wolkoff, Gunnar D Nielsen
Odorous compounds (odors) like fragrances may cause adverse health effects. To assess their importance by inhalation, we have reviewed how the four major abundant and common airborne fragrances (α-pinene (APN), limonene (LIM), linalool (LIL), and eugenol (EUG)) impact the perceived indoor air quality as odor annoyance, sensory irritation and sensitization in the airways. Breathing and cardiovascular effects, and work performance, and the impact in the airways of ozone-initiated gas- and particle phase reactions products have also been assessed...
January 23, 2017: Environment International
https://www.readbyqxmd.com/read/28118687/potential-benefits-of-mindfulness-during-pregnancy-on-maternal-autonomic-nervous-system-function-and-infant-development
#13
Marijke A K A Braeken, Alexander Jones, Renée A Otte, Ivan Nyklíček, Bea R H Van den Bergh
Mindfulness is known to decrease psychological distress. Possible benefits in pregnancy have rarely been explored. Our aim was to examine the prospective association of mindfulness with autonomic nervous system function during pregnancy and with later infant social-emotional development. Pregnant women (N = 156) completed self-report mindfulness and emotional distress questionnaires, and had their autonomic function assessed in their first and third trimesters, including heart rate (HR), indices of heart rate variability (HRV), preejection period (PEP), and systolic (SBP) and diastolic blood pressure (DBP)...
February 2017: Psychophysiology
https://www.readbyqxmd.com/read/28114163/doppler-ultrasonography-of-the-central-retinal-vessels-in-children-with-brain-death
#14
Becky J Riggs, Joanna S Cohen, Bhavana Shivakumar, Carmelina Trimboli-Heidler, Jason T Patregnani, Marijean M Miller, Michael C Spaeder, Nathan P Dean
OBJECTIVE: The purpose of this observational study is to explore if bedside Doppler ultrasonography of the central retinal vessels has the potential to become an ancillary study to support the timely diagnosis of brain death in children. DESIGN: Seventeen-month prospective observational cohort. SETTING: Forty-four bed pediatric medical and surgical ICU in an academic teaching hospital. PATIENTS: All children 0-18 years old who were clinically evaluated for brain death at Children's National Health Systems were enrolled and followed until discharge or death...
January 20, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28107894/heart-rate-variability-biofeedback-therapy-and-graded-exercise-training-in-management-of-chronic-fatigue-syndrome-an-exploratory-pilot-study
#15
Petra Windthorst, Nazar Mazurak, Marvin Kuske, Arno Hipp, Katrin E Giel, Paul Enck, Andreas Nieß, Stephan Zipfel, Martin Teufel
OBJECTIVE: Chronic fatigue syndrome (CFS) is characterised by persistent fatigue, exhaustion, and several physical complaints. Research has shown cognitive behavioural therapy (CBT) and graded exercise training (GET) to be the most effective treatments. In a first step we aimed to assess the efficacy of heart rate variability biofeedback therapy (HRV-BF) as a treatment method comprising cognitive and behavioural strategies and GET in the pilot trial. In a second step we aimed to compare both interventions with regard to specific parameters...
February 2017: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/28107887/associations-between-positive-emotional-well-being-and-stress-induced-myocardial-ischemia-well-being-scores-predict-exercise-induced-ischemia
#16
Jacob P Feigal, Stephen H Boyle, Zainab Samad, Eric J Velazquez, Jennifer L Wilson, Richard C Becker, Redford B Williams, Cynthia M Kuhn, Thomas L Ortel, Joseph G Rogers, Christopher M O'Connor, Wei Jiang
OBJECTIVE: Depressive symptoms have been associated with myocardial ischemia induced by mental (MSIMI) and exercise (ESIMI) stress in clinically stable ischemic heart disease (IHD) patients, but the association between positive emotions and inducible ischemia is less well characterized. The objective of this study was to examine the associations between ratings of well-being and stress-induced ischemia. METHODS: Subjects were adult patients with documented IHD underwent mental and exercise stress testing for the Responses of Myocardial Ischemia to Escitalopram Treatment (REMIT) trial...
February 2017: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/28106832/plaimos-a-remote-mobile-healthcare-platform-to-monitor-cardiovascular-and-respiratory-variables
#17
Ramses Miramontes, Raúl Aquino, Arturo Flores, Guillermo Rodríguez, Rafael Anguiano, Arturo Ríos, Arthur Edwards
The number of elderly and chronically ill patients has grown significantly over the past few decades as life expectancy has increased worldwide, leading to increased demands on the health care system and significantly taxing traditional health care practices. Consequently, there is an urgent need to use technology to innovate and more constantly and intensely monitor, report and analyze critical patient physiological parameters beyond conventional clinical settings in a more efficient and cost effective manner...
January 19, 2017: Sensors
https://www.readbyqxmd.com/read/28102874/cardiorespiratory-hospitalisation-and-mortality-reductions-after-smoking-bans-in-switzerland
#18
Ana M Vicedo-Cabrera, Martin Röösli, Dragana Radovanovic, Leticia Grize, Fabienne Witassek, Christian Schindler, Laura Perez
INTRODUCTION: Smoking bans are considered one of the most effective policies to reduce population exposure to tobacco smoke and prevent adverse health outcomes. However, evidence on the effect of contextual variables on the effectiveness of smoking bans is still lacking. AIMS: The patchwork of cantonal smoke-free laws in Switzerland was used as a quasi-experimental setting to assess changes after their introduction in: hospitalisations and mortality due to cardiorespiratory diseases in adults; total hospitalisations and hospitalisations due to respiratory disorders in children; and the modifying effects of contextual factors and the effectiveness of the laws...
January 19, 2017: Swiss Medical Weekly
https://www.readbyqxmd.com/read/28099093/patients-with-infectious-endocarditis-and-drug-dependence-have-worse-clinical-outcomes-after-valvular-surgery
#19
Anthony Lemaire, Viktor Dombrovskiy, Siavash Saadat, George Batsides, Aziz Ghaly, Alan Spotnitz, Leonard Y Lee
BACKGROUND: Patients with infective endocarditis (IE) are at high risk for post-operative morbidity and death, which might be associated with drug abuse. The purpose of this study is to evaluate the impact of drug dependence on outcomes in patients who have IE and undergo valvular surgery (VS). PATIENTS AND METHODS: The Nationwide/National Inpatient Sample 2001-2012 was queried to select patients with IE who had elective VS using International Classification of Diseases, Ninth Revision, Clinical Modification diagnosis and procedure codes...
January 18, 2017: Surgical Infections
https://www.readbyqxmd.com/read/28080048/wearable-sensors-for-personal-monitoring-and-estimation-of-inhaled-traffic-related-air-pollution-evaluation-of-methods
#20
Evi Dons, Michelle Laeremans, Juan Pablo Orjuela, Ione Avila-Palencia, Glòria Carrasco-Turigas, Tom Cole-Hunter, Esther Anaya-Boig, Arnout Standaert, Patrick De Boever, Tim Nawrot, Thomas Götschi, Audrey de Nazelle, Mark Nieuwenhuijsen, Luc Int Panis
Physical activity and ventilation rates have an effect on an individual's dose and may be important to consider in exposure-response relationships; however, these factors are often ignored in environmental epidemiology studies. The aim of this study was to evaluate methods of estimating the inhaled dose of air pollution and understand variability in the absence of a true gold standard metric. Five types of methods were identified: (1) methods using (physical) activity types, (2) methods based on energy expenditure, METs (metabolic equivalents of task), and oxygen consumption, (3) methods based on heart rate or (4) breathing rate, and (5) methods that combine heart and breathing rate...
January 27, 2017: Environmental Science & Technology
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