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Heart rate variability and health

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https://www.readbyqxmd.com/read/27920726/hrvanalysis-a-free-software-for-analyzing-cardiac-autonomic-activity
#1
Vincent Pichot, Frédéric Roche, Sébastien Celle, Jean-Claude Barthélémy, Florian Chouchou
Since the pioneering studies of the 1960s, heart rate variability (HRV) has become an increasingly used non-invasive tool for examining cardiac autonomic functions and dysfunctions in various populations and conditions. Many calculation methods have been developed to address these issues, each with their strengths and weaknesses. Although, its interpretation may remain difficult, this technique provides, from a non-invasive approach, reliable physiological information that was previously inaccessible, in many fields including death and health prediction, training and overtraining, cardiac and respiratory rehabilitation, sleep-disordered breathing, large cohort follow-ups, children's autonomic status, anesthesia, or neurophysiological studies...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27914806/interprovincial-differences-in-canadian-coronary-care-unit-resource-use-and-outcomes
#2
Sean van Diepen, Meng Lin, Justin A Ezekowitz, Finlay A McAlister, Douglas S Lee, Shaun G Goodman, Paul W Armstrong, Padma Kaul
International registries have reported a wide variation in coronary care unit (CCU) admission rates for patients hospitalized with acute coronary syndrome (ACS) or heart failure (HF). Little is known about variation in Canadian interprovincial use and outcomes. Canadian Institute of Health Information data were used to identify hospitalized patients admitted to a CCU with a primary diagnosis of ACS or HF between April 1, 2007 and March 31, 2013. We examined interprovincial differences in CCU admission rates, use of CCU restricted therapies in the first 2 days of admission, and the association between CCU admission rate and risk-adjusted in-hospital mortality at the provincial level...
October 19, 2016: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/27913593/higher-heart-rate-variability-is-associated-with-vmpfc-activity-and-increased-resistance-to-temptation-in-dietary-self-control-challenges
#3
Silvia U Maier, Todd A Hare
: Higher levels of self-control in decision making have been linked to better psychosocial and physical health. A similar link to health outcomes has been reported for heart rate variability (HRV), a marker of physiological flexibility. Here, we sought to link these two, largely separate, research domains by testing the hypothesis that greater HRV would be associated with better dietary self-control in humans. Specifically, we examined whether total HRV at sedentary rest (measured as the standard deviation of normal-to-normal intervals, SDNN) can serve as a biomarker for the neurophysiological adaptability that putatively underlies self-controlled behavior...
December 2, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27901339/cardiac-parasympathetic-reactivation-after-small-sided-soccer-games-and-repeated-sprints-in-untrained-healthy-adolescents
#4
Amri Hammami, Sofien Kasmi, Narimen Yousfi, Marwa Bouamra, Zouhaier Tabka, Ezdine Bouhlel
BACKGROUND: It has been shown that recreational soccer was a highly motivating and social activity which produces large improvements in health-related indices in sedentary healthy and unhealthy subjects. The purpose of this study was to compare the acute parasympathetic reactivation after small-sided soccer games (SSG) and repeated sprints training (RST) sessions. METHODS: Eight post-pubertal untrained adolescents (age 15.8 ± 0.6 years, body mass 59.1 ± 3.7 kg, height 1...
November 30, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27899470/i-trach-validating-a-tool-for-predicting-prolonged-mechanical-ventilation
#5
Paul A Clark, Ryan C Inocencio, Christopher J Lettieri
PURPOSE: We previously developed a bedside model (I-TRACH), which used commonly obtained data at the time of intubation to predict the duration of mechanical ventilation (MV). We now sought to validate this in a prospective trial. METHODS: A prospective, observational study of 225 consecutive adult medical intensive care unit patients requiring MV. Utilizing the original 6 variables used in the I-TRACH model (Intubation in the ICU, Tachycardia [heart rate > 110], Renal dysfunction [blood urea nitrogen > 25], Acidemia [pH < 7...
November 28, 2016: Journal of Intensive Care Medicine
https://www.readbyqxmd.com/read/27889332/effect-of-an-aerobic-exercise-intervention-on-cardiac-autonomic-regulation-a-worksite-rct-among-cleaners
#6
David M Hallman, Andreas Holtermann, Karen Søgaard, Peter Krustrup, Jesper Kristiansen, Mette Korshøj
OBJECTIVE: The aim of this randomized controlled trial (RCT) was to determine whether aerobic exercise during work hours affects cardiac autonomic regulation in cleaners characterized by high levels of occupational physical activity and poor cardiorespiratory fitness. METHOD: Eligible cleaners (n=116) were randomized to an aerobic exercise group (n=59) or a reference group (n=57) with lectures. The intervention group received two 30-min sessions per week of supervised aerobic exercise over 4months...
November 24, 2016: Physiology & Behavior
https://www.readbyqxmd.com/read/27888091/patient-and-clinical-characteristics-that-heighten-risk-for-heart-failure-readmission
#7
Chad Bradford, Bijal M Shah, Patricia Shane, Nicole Wachi, Kamalpreet Sahota
BACKGROUND: Within 30 days of hospital discharge, heart failure (HF) readmission rates nationally accumulate to more than 20%. Due to this high rate of unplanned re-hospitalization, predictive models are needed to identify patients who pose the highest readmission risk. OBJECTIVE: To evaluate the diagnosis and timing and to identify patient and clinical characteristics associated with 30 day readmissions among HF patients. METHODS: A retrospective analysis of electronic health records was conducted to study HF admissions during the period October 2008 to November 2014...
November 10, 2016: Research in Social & Administrative Pharmacy: RSAP
https://www.readbyqxmd.com/read/27886710/automated-diagnosis-of-coronary-artery-disease-cad-patients-using-optimized-svm
#8
Azam Davari Dolatabadi, Siamak Esmael Zadeh Khadem, Babak Mohammadzadeh Asl
BACKGROUND AND OBJECTIVE: Currently Coronary Artery Disease (CAD) is one of the most prevalent diseases, and also can lead to death, disability and economic loss in patients who suffer from cardiovascular disease. Diagnostic procedures of this disease by medical teams are typically invasive, although they do not satisfy the required accuracy. METHODS: In this study, we have proposed a methodology for the automatic diagnosis of normal and Coronary Artery Disease conditions using Heart Rate Variability (HRV) signal extracted from electrocardiogram (ECG)...
January 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/27874154/characterizing-sleeping-habits-and-disturbances-among-saudi-adults
#9
Mohamad Al-Tannir, Samer Y Kobrosly, Ahmad H Al-Badr, Nourhan A Salloum, Youssef M Altannir
To characterize sleeping habits, assess sleep disturbance prevalence, and identify associated factors among Saudi adults.  Methods: A total of 1720 adults were approached for this observational cross-sectional study between October 2014 and March 2015. The study took place in Riyadh, the capital of Saudi Arabia. We used a questionnaire to describe sleeping characteristics in relation to existing chronic diseases, smoking status, obesity, daily performance and sociodemographic variables. Results: The response rate was 79...
December 2016: Saudi Medical Journal
https://www.readbyqxmd.com/read/27873227/the-relationship-between-aortic-root-size-and-hypertension-an-unsolved-conundrum
#10
Giuseppe Mulè, Emilio Nardi, Massimiliano Morreale, Antonella Castiglia, Giulio Geraci, Dario Altieri, Valentina Cacciatore, Margherita Schillaci, Francesco Vaccaro, Santina Cottone
Thoracic aortic aneurysms rupture and dissection are among the most devastating vascular diseases, being characterized by elevated mortality, despite improvements in diagnostic imaging and surgical techniques.An increased aortic root diameter (ARD) represents the main risk factor for thoracic aortic dissection and rupture and for aortic valve regurgitation.Even though arterial hypertension is commonly regarded as a predisposing condition for the development of thoracic aorta aneurysms, the role of blood pressure (BP) as determinant of aortic root enlargement is still controversial...
November 22, 2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27866025/the-adverse-impact-of-obesity-on-heart-rate-variability-is-modified-by-a-nfe2l2-gene-variant-the-sapaldia-cohort
#11
Martin Adam, Medea Imboden, Emmanuel Schaffner, Eva Boes, Florian Kronenberg, Marco Pons, Robert Bettschart, Jean-Claude Barthelemy, Christian Schindler, Nicole Probst-Hensch
BACKGROUND: Overweight has been associated with an increase in inflammatory markers and with an imbalance in the autonomic nervous system, such as a decrease in heart rate variability (HRV). In this study we aimed to investigate the modifying effect of a genetic variation in a major anti-inflammatory marker gene, NFE2L2, on the relationship between overweight and HRV. METHODS: We analyzed participants of the SAPALDIA cohort aged 50years and older, twice in 2002/2003 (N=1472) and 2010/2011 (N=1235)...
November 8, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27865507/plasma-protein-and-supplemental-isoleucine-in-milk-replacers-for-dairy-calves
#12
K M Vasquez, S Y Morrison, J M Campbell, J K Drackley
We measured the effects of milk replacers containing 0, 33, 66, or 100% of the total replaceable whey protein as bovine plasma protein (PP), without or with Ile supplementation, on the intake, growth, and health of 124 male Holstein calves for 35 d. Milk replacers were formulated to contain 18% crude protein and 20% fat, with contents of Lys and Met equalized. When fed to calves at 1.5% of body weight (dry matter basis) under thermoneutral conditions, diets were predicted to allow average daily gains of 0.55 kg/d based on metabolizable energy or 0...
November 16, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/27864827/biomarkers-of-oxidative-and-nitro-oxidative-stress-conventional-and-novel-approaches
#13
REVIEW
Ana Cipak Gasparovic, Neven Zarkovic, Kamelija Zarkovic, Khrystyna Semen, Danylo Kaminskyy, Olha Yelisyeyeva, Serge P Bottari
The concept of oxidative stress (OS) which associates altered redox biology with various diseases was introduced thirty years ago and has generated intensive research over the past two decades. Whereas it is now commonly accepted that macromolecule oxidation in response to reactive oxygen species (ROS) is associated with a variety of pathologies, the emergence of NO as a key regulator of redox signalling has led to the discovery of the pathophysiological significance of reactive nitrogen species (RNS). RNS can elicit various modifications of macromolecules and lead to nitrative or nitro-OS...
November 19, 2016: British Journal of Pharmacology
https://www.readbyqxmd.com/read/27856115/exercise-capacity-heart-failure-risk-and-mortality-in-older-adults-the-health-abc-study
#14
Vasiliki V Georgiopoulou, Andreas P Kalogeropoulos, Ritam Chowdhury, José Nilo G Binongo, Kirsten Bibbins-Domingo, Nicolas Rodondi, Eleanor M Simonsick, Tamara Harris, Anne B Newman, Stephen B Kritchevsky, Javed Butler
INTRODUCTION: Data on the association between exercise capacity and risk for heart failure (HF) in older adults are limited. METHODS: This study examined the association of exercise capacity, and its change over time, with 10-year mortality and incident HF in 2,935 participants of the Health, Aging, and Body Composition Study without HF at baseline (age, 73.6 [SD=2.9] years; 52.1% women; 41.4% black; 58.6% white). This cohort was initiated in 1997-1998 and exercise capacity was evaluated with a long-distance corridor walk test (LDCW) at baseline and Year 4...
November 14, 2016: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/27856091/a-clinical-risk-prediction-tool-for-6-month-mortality-after-dialysis-initiation-among-older-adults
#15
James P Wick, Tanvir C Turin, Peter D Faris, Jennifer M MacRae, Robert G Weaver, Marcello Tonelli, Braden J Manns, Brenda R Hemmelgarn
BACKGROUND: Information on an individual's risk for death following dialysis therapy initiation may inform the decision to initiate maintenance dialysis for older adults. We derived and validated a clinical risk prediction tool for all-cause mortality among older adults during the first 6 months of maintenance dialysis treatment. STUDY DESIGN: Prediction model using retrospective administrative and clinical data. SETTING & PARTICIPANTS: We linked administrative and clinical data to define a cohort of 2,199 older adults (age ≥ 65 years) in Alberta, Canada, who initiated maintenance dialysis therapy (excluding acute kidney injury) in May 2003 to March 2012...
November 14, 2016: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/27853327/the-effects-of-maternal-opium-abuse-on-fetal-heart-rate-using-non-stress-test
#16
Fatemeh Keikha, Fahimeh Ghotbizadeh Vahdani, Sahar Latifi
BACKGROUND: Opium is one of the most commonly abused opiates in developing countries including Iran. Considering the importance of maternal health on the newborn, we aimed to assess the effect of opium abuse on fetal heart rate (FHR) characteristics in a sample of pregnant women in Zahedan, Southeast Iran. METHODS: This cross-sectional study was done on 100 pregnant women referring to Ali-Ibn-Abi Talib Hospital in Zahedan, during 2011-2013. The participants were divided into two groups comprising of opium abusers and healthy individuals...
November 2016: Iranian Journal of Medical Sciences
https://www.readbyqxmd.com/read/27849113/late-night-exercise-affects-the-autonomic-nervous-system-activity-but-not-the-hypothalamo-pituitary-adrenal-axis-in-the-next-morning
#17
Cihat Ucar, Tuba Özgöçer, Sedat Yildiz
BACKGROUND: Exercise activates hypothalamic-pituitary-adrenal axis (HPA) and autonomic nervous system (ANS) and generally causes beneficial changes in homeostatic balance. However, the health benefits of late-night exercise programs on the activity of HPA and ANS is not known. The aim of this study was to assess effects of late-night exercise on sleep quality and on the activities of the HPA axis (as cortisol awakening response, CAR) and the ANS (as heart rate variability, HRV) measurements in the following morning...
November 16, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27836300/methods-of-assessment-of-the-post-exercise-cardiac-autonomic-recovery-a-methodological-review
#18
REVIEW
Tiago Peçanha, Rhenan Bartels, Leandro C Brito, Marcelle Paula-Ribeiro, Ricardo S Oliveira, Jeffrey J Goldberger
The analysis of post-exercise cardiac autonomic recovery is a practical clinical tool for the assessment of cardiovascular health. A reduced heart rate recovery - an indicator of autonomic dysfunction - has been found in a broad range of cardiovascular diseases and has been associated with increased risks of both cardiac and all-cause mortality. For this reason, over the last several years, non-invasive methods for the assessment of cardiac autonomic recovery after exercise - either based on heart rate recovery or heart rate variability indices - have been proposed...
October 23, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27831751/altered-autonomic-functions-and-distressed-personality-traits-in-male-adolescents-with-internet-gaming-addiction
#19
Nahyun Kim, Tonda L Hughes, Chang G Park, Laurie Quinn, In Deok Kong
Internet gaming addiction (IGA) has been associated with many negative health outcomes, especially for youth; however, few studies have examined the physiological parameters and personality features related to this addiction. This study aimed to identify differences in autonomic functions and distressed (type D) personality traits among Korean adolescent males with and without IGA. In a cross-sectional study, 68 adolescent males were recruited in a Korean city using convenience and snowball sampling methods...
November 2016: Cyberpsychology, Behavior and Social Networking
https://www.readbyqxmd.com/read/27830377/-changes-and-differences-of-heart-rate-variability-of-patients-in-a%C3%A2-psychiatric-rehabilitation-clinic
#20
Friedrich Riffer, Lore Streibl, Manuel Sprung, Elmar Kaiser, Lena Riffer
BACKGROUND: A reduced heart rate variability (HRV) has been associated with various different pathological physical and psychological conditions and illnesses. The present study is focused on investigating HRV in respect to psychological disorders (depressive disorders anxiety disorders, Burn-out-Syndrome). METHODS: The results from an investigation with patients from a psychiatric Rehabilitation clinic following a six week in-patient treatment are presented...
December 2016: Neuropsychiatrie: Klinik, Diagnostik, Therapie und Rehabilitation
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