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Heart Rate Variability and cardiovascular disease

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https://www.readbyqxmd.com/read/28228307/comparative-study-of-cardiac-autonomic-status-by-heart-rate-variability-between-under-treatment-normotensive-and-hypertensive-known-type-2-diabetics
#1
Jayesh D Solanki, Sanket D Basida, Hemant B Mehta, Sunil J Panjwani, Bhakti P Gadhavi
BACKGROUND: Co-existence of hypertension is known in three quarter of Indian type 2 diabetics, this duo having adverse additive effect on cardiovascular health including dysautonomia. Latter can be measured by simple 5min heart rate variability (HRV) using simple electrocardiogram, which if reduced indicates cardiac risk. OBJECTIVE: We compared HRV parameters between hypertensive and normotensive type 2 diabetics, looking for significant difference if any. MATERIALS AND METHODS: 98 hypertensive and 40 normotensive type 2 diabetics treated as outpatients were evaluated for disease control and risk stratification...
January 2017: Indian Heart Journal
https://www.readbyqxmd.com/read/28227702/socioeconomic-status-age-and-heart-rate-variability-in-a-bangladeshi-community
#2
Nishat E-Sharmin Trisha, Herbert F Jelinek, Mika P Tarvainen, David J Cornforth, Dewan S Alam, Megan Smith, Nishat E-Sharmin Trisha, Herbert F Jelinek, Mika P Tarvainen, David J Cornforth, Dewan S Alam, Megan Smith, Herbert F Jelinek, David J Cornforth, Megan Smith, Nishat E-Sharmin Trisha, Dewan S Alam, Mika P Tarvainen
Socioeconomic status (SES) is a risk factor for cardiovascular disease (CVD) and either low or high heart rate variability (HRV) at rest has been shown to predict cardiovascular morbidity and mortality. The study investigated the extent HRV features can predict SES. Four hundred and twenty eight people were randomly selected from the commercial districts (high SES) and slum areas (low SES) within Dhaka city. Demographic, clinical, and HRV features were recorded. Of the clinical variables age, waist circumference and diastolic blood pressure (p<;0...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227136/can-ppg-be-used-for-hrv-analysis
#3
N Pinheiro, R Couceiro, J Henriques, J Muehlsteff, I Quintal, L Goncalves, P Carvalho, N Pinheiro, R Couceiro, J Henriques, J Muehlsteff, I Quintal, L Goncalves, P Carvalho, P Carvalho, J Muehlsteff, L Goncalves, N Pinheiro, J Henriques, I Quintal, R Couceiro
Heart rate variability (HRV) represents one of the most promising markers of the autonomic nervous system (ANS) regulation. However, it requires the acquisition of the ECG signal in order to reliably detect the RR intervals, which is not always easily and comfortably available in personal health applications. Additionally, due to progress in single spot optical sensors, photoplethysmography (PPG) is an interesting alternative for heartbeat interval measurements, since it is a more convenient and a less intrusive measurement technique...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226571/cuff-less-ppg-based-continuous-blood-pressure-monitoring-a-smartphone-based-approach
#4
Aman Gaurav, Maram Maheedhar, Vijay N Tiwari, Rangavittal Narayanan, Aman Gaurav, Maram Maheedhar, Vijay N Tiwari, Rangavittal Narayanan, Maram Maheedhar, Rangavittal Narayanan, Vijay N Tiwari, Aman Gaurav
Cuff-less estimation of systolic (SBP) and diastolic (DBP) blood pressure is an efficient approach for non-invasive and continuous monitoring of an individual's vitals. Although pulse transit time (PTT) based approaches have been successful in estimating the systolic and diastolic blood pressures to a reasonable degree of accuracy, there is still scope for improvement in terms of accuracies. Moreover, PTT approach requires data from sensors placed at two different locations along with individual calibration of physiological parameters for deriving correct estimation of systolic and diastolic blood pressure (BP) and hence is not suitable for smartphone deployment...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28219924/time-trends-and-educational-inequalities-in-out-of-hospital-coronary-deaths-in-norway-1995-2009-a-cardiovascular-disease-in-norway-cvdnor-project
#5
Enxhela Sulo, Ottar Nygård, Stein Emil Vollset, Jannicke Igland, Marta Ebbing, Truls Østbye, Torben Jørgensen, Gerhard Sulo, Grethe S Tell
BACKGROUND: Recent time trends and educational gradients characterizing out-of-hospital coronary deaths (OHCD) are poorly described. METHODS AND RESULTS: We identified all deaths from coronary heart disease occurring outside the hospital in Norway during 1995 to 2009. Time trends were explored using Poisson regression analysis with year as the independent, continuous variable. Information on the highest achieved education was obtained from The National Education Database and classified as primary (up to 10 years of compulsory education), secondary (high school or vocational school), or tertiary (college/university)...
February 20, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28212483/-correlation-of-heart-rate-variability-with-syntax-ii-on-chronic-angina
#6
Tatiana Chantal Castro-de la Torre, Norma Amador-Licona, Enrique Bernal-Ruíz
BACKGROUND: The heart rate variability (HRV) is a prognostic value of cardiovascular risk. It is unknown the correlation between HRV and coronary severity on patients with chronic angina. The objective was to determine the correlation between HRV and the SYNTAX II score in chronic angina. METHODS: Cross-sectional study in patients of 18 years or older with stable angina and indication of coronary angiography who went to a third level center. The SYNTAX II score was established by using coronary angiography, while HRV was obtained by a 24-hour Holter ECG...
2017: Revista Médica del Instituto Mexicano del Seguro Social
https://www.readbyqxmd.com/read/28211138/nocturnal-autonomic-nervous-system-activity-and-morning-proinflammatory-cytokines-in-young-adult-african-americans
#7
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/28211121/relationship-between-qt-and-jt-peak-interval-variability-in-prepubertal-children
#8
Yuka Takeuchi, Yumi Omeki, Kayo Horio, Miki Nishio, Rina Nagata, Shota Oikawa, Yuri Mizutani, Arisa Nagatani, Yuri Funamoto, Hidetoshi Uchida, Masayuki Fujino, Yoshihiko Eryu, Hiroko Boda, Masafumi Miyata, Tadayoshi Hata
BACKGROUND: The QT variability index (QTVI) is a noninvasive index of repolarization lability that has been applied to subjects with cardiovascular disease. QTVI provides a ratio of normalized QT variability to normalized heart rate variability, and therefore includes an assessment of autonomic nervous activity. However, measurement of QT time is particularly difficult in children, who exhibit physiologically high heart rates compared with adults. In this study, we developed a set of standard values of J-point to Tpeak interval (JTp) for infants by age, and assessed the correlation of QTVI with the JTp variability index (JTpVI)...
February 17, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28196524/financial-barriers-and-adverse-clinical-outcomes-among-patients-with-cardiovascular-related-chronic-diseases-a-cohort-study
#9
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/28186000/monitoring-fetal-maturation-objectives-techniques-and-indices-of-autonomic-function
#10
Dirk Hoyer, Jan Zebrowski, Dirk Cysarz, Hernani Goncalves, Adelina Pytlik, Celia Amorim-Costa, Joao Bernardes, Diogo Ayres-de-Campos, Otto Witte, Ekkehard Schleussner, Lisa Stroux, Christopher Redman, Antoniya Georgieva, Stephen Payne, Gari Clifford, Maria Signorini, Giovanni Magenes, Fernando Andreotti, Hagen Malberg, Sebastian Zaunseder, Igor Lakhno, Uwe Schneider
Monitoring the fetal behavior does not only have implications for acute care but also for identifying developmental disturbances that burden the entire later life. The concept, of "fetal programming", also known as "developmental origins of adult disease hypothesis", e.g. applies for cardiovascular, metabolic, hyperkinetic, cognitive disorders. Since the autonomic nervous system is involved in all of those systems, cardiac autonomic control may provide relevant functional diagnostic and prognostic information...
February 10, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28167918/quantifying-effects-of-pharmacological-blockers-of-cardiac-autonomous-control-using-variability-parameters
#11
Renata Miyabara, Karsten Berg, Jan F Kraemer, Ovidiu C Baltatu, Niels Wessel, Luciana A Campos
Objective: The aim of this study was to identify the most sensitive heart rate and blood pressure variability (HRV and BPV) parameters from a given set of well-known methods for the quantification of cardiovascular autonomic function after several autonomic blockades. Methods: Cardiovascular sympathetic and parasympathetic functions were studied in freely moving rats following peripheral muscarinic (methylatropine), β1-adrenergic (metoprolol), muscarinic + β1-adrenergic, α1-adrenergic (prazosin), and ganglionic (hexamethonium) blockades...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28159399/particulate-and-gaseous-pollutants-on-inflammation-thrombosis-and-autonomic-imbalance-in-subjects-at-risk-for-cardiovascular-disease
#12
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/28144278/altered-sympathovagal-balance-and-pain-hypersensitivity-in-tnbs-induced-colitis
#13
Katarzyna Ciesielczyk, Agata Furgała, Łukasz Dobrek, Kajetan Juszczak, Piotr Thor
INTRODUCTION: Pain hypersensitivity, abnormal motility and autonomic dysfunction contribute to functional symptoms of inflammatory bowel disease (IBD). MATERIAL AND METHODS: The aim of this study was to assess: nociceptive thresholds for mechanical allodynia (MA) and thermal hyperalgesia (TH), intestinal motility (distal colonic transit and emptying), and cardiac autonomic neuropathy (indices of heart rate variability - HRV) in male Wistar rats with experimental trinitrobenzene sulfonic acid (TNBS) induced colitis...
February 1, 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/28137520/the-correlation-between-pulse-diagnosis-and-constitution-identification-in-traditional-chinese-medicine
#14
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/28128728/peritoneal-dialysis-is-a-reasonable-option-in-patients-with-cardiovascular-disease%C3%A2
#15
Sara Querido, Patrícia Quadros Branco, Henrique Silva Sousa, Teresa Adragão, Pedro Araújo Gonçalves, Maria Augusta Gaspar, José Diogo Barata
INTRODUCTION: Peritoneal dialysis (PD) has been proposed as a therapeutic option for patients with end-stage renal disease (ESRD) and cardiovascular (CV) disease. The study presented here aimed to compare incident PD patients with and without CV disease at baseline, in order to determine the impact of CV disease in the outcomes of long-term PD patients. METHODS: This is a prospective cohort study performed at a single PD unit where 112 consecutive incident patients admitted to the PD program during 5 years were studied...
January 27, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/28118872/model-derived-markers-of-autonomic-cardiovascular-dysfunction-in-sleep-disordered-breathing
#16
REVIEW
Michael C K Khoo, Patjanaporn Chalacheva
Evidence indicates that sleep-disordered breathing leads to elevated sympathetic tone and impaired vagal activity, promoting hypertension and cardiometabolic disease. Low-cost but accurate monitoring of autonomic function is useful for the aggressive management of sleep apnea. This article reviews the development and application of multivariate dynamic biophysical models that enable the causal dependencies among respiration, blood pressure, heart rate variability, and peripheral vascular resistance to be quantified...
December 2016: Sleep Medicine Clinics
https://www.readbyqxmd.com/read/28107887/associations-between-positive-emotional-well-being-and-stress-induced-myocardial-ischemia-well-being-scores-predict-exercise-induced-ischemia
#17
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/28103324/use-of-proton-pump-inhibitors-predicts-heart-failure-and-death-in-patients-with-coronary-artery-disease
#18
Ana María Pello Lázaro, Carmen Cristóbal, Juan Antonio Franco-Peláez, Nieves Tarín, Álvaro Aceña, Rocío Carda, Ana Huelmos, María Luisa Martín-Mariscal, Jesús Fuentes-Antras, Juan Martínez-Millá, Joaquín Alonso, Óscar Lorenzo, Jesús Egido, Lorenzo López-Bescós, José Tuñón
OBJECTIVES: Proton-pump inhibitors (PPIs) seem to increase the incidence of cardiovascular events in patients with coronary artery disease (CAD), mainly in those using clopidogrel. We analysed the impact of PPIs on the prognosis of patients with stable CAD. METHODS: We followed 706 patients with CAD. Primary outcome was the combination of secondary outcomes. Secondary outcomes were 1) acute ischaemic events (any acute coronary syndrome, stroke, or transient ischaemic attack) and 2) heart failure (HF) or death...
2017: PloS One
https://www.readbyqxmd.com/read/28102874/cardiorespiratory-hospitalisation-and-mortality-reductions-after-smoking-bans-in-switzerland
#19
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/28099042/sex-differences-in-associations-between-insulin-resistance-heart-rate-variability-and-arterial-stiffness-in-healthy-women-and-men-a-physiology-study
#20
Luke Anthony Rannelli, Jennifer M MacRae, Michelle C Mann, Sharanya Ramesh, Brenda R Hemmelgarn, Doreen Rabi, Darlene Y Sola, Sofia B Ahmed
Diabetes confers greater cardiovascular risk to women than to men. Whether insulin-resistance-mediated risk extends to the healthy population is unknown. Measures of insulin resistance (fasting insulin, homeostatic model assessment, hemoglobin A1c, quantitative insulin sensitivity check index, glucose) were determined in 48 (56% female) healthy subjects. Heart rate variability (HRV) was calculated by spectral power analysis and arterial stiffness was determined using noninvasive applanation tonometry. Both were measured at baseline and in response to angiotensin II infusion...
November 2, 2016: Canadian Journal of Physiology and Pharmacology
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