Download or read book Heart Rate Variability and other Autonomic Markers in Children and Adolescents written by Jerzy Sacha and published by Frontiers Media SA. This book was released on 2019-11-27 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 24 Hour Heart Rate Variability Analysis HRV in Childhood written by Reiner Buchhorn and published by Nova Science Publishers. This book was released on 2015-04-16 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based upon the hypothesis that prognosis in childhood heart failure depends on autonomic dysfunction, the author introduced a new heart failure model and a medical therapy with beta-blockers in 1996. The author used the analysis of heart rate variability (HRV) in 24 hours Holter ECG's for the understanding of the pathophysiology of childhood heart failure and for objective control of medical therapy. The success of this clinical model was the inspiration of a new approach to mental disease in childhood. In the last decades, an increase of new paediatric problems requiring medical care like eating disorders, behavioural and attention problems has been observed. All these diseases are related to autonomic dysfunction and have a high impact on cardiovascular prognosis. Based upon the hypothesis that behavioural problems are accompanied by changes in the autonomic nervous system, the author performed analysis of HRV in 24 hours Holter ECG's in these patient groups: healthy children with respect to school affiliation; a historical control group from literature published in 1997; attention deficit disorder with and without hyperactivity; anorexia nervosa and obesity. This data was compared to children with an increased cardiovascular risk due to congenital heart disease. In order to analyse the effect of autonomic function on human growth, we measured HRV in children with growth failure. A new HRV Score was established for the comparison of autonomic function in different age groups. The author could demonstrate a decrease of vagal activity in healthy children in children of today and speculate that insufficient vagal maturation may be a reason for an increasing prevalence of mental and cardiovascular disease. Looking for the reason of this vagal shift, caloric over nutrition, omega-3-fatty acid deficiency, high intensity of information and communication technology usage and some environmental toxins reduce HRV in childhood.

Download or read book Heart Rate Variability in 10 Year Old Children written by Taher Ali Said Biala and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Heart rate variability (HRV) analysis is a powerful non-invasive tool used to determine the state of the heart and assess the development of the Autonomic Nervous System (ANS). The reduced HRV has been associated with negative outcome of ANS. This work describes the results obtained by HRV analysis of two groups of children, 41 Intrauterine growth retarded (IUGR) and 34 normal for a period of 24 hours. The main objective of this work was to explore the autonomic control in IUGR children by performing HRV analysis and comparing the results with normal children to find differences in HRV at 10 years of age. Barker theory and hypothesis states that the IUGR can be prone to coronary heart diseases or hypertension in their adulthood. Signal processing was performed on the ECG signal (data) provided which included filtering and detecting the QRS to find the RR segments. In the time domain analysis many parameters were calculated for all 75 children. Several comparisons between IUGR and normal children groups using night time and one hour RR data collected at night using several variables were computed. Frequency domain analysis of RR has been performed by autoregressive model (AR) Fast Fourier Transform (FFT) after re-sampling RR data of all 75 children. Calculation of the frequency components, large frequency, high frequency, and ratio of LF/HF, were obtained using FFT, AR and Lomb periodogram. Statistical analyses were performed to compare between IUGR and normal children. Time and frequency analysis comparison between the two groups of children showed no significant statistical differences, but the analysis has shown significant difference when dividing IUGR into IUGR1 (

Download or read book Heart Rate Variability HRV Signal Analysis written by Markad V. Kamath and published by CRC Press. This book was released on 2016-04-19 with total page 523 pages. Available in PDF, EPUB and Kindle. Book excerpt: Open a Window into the Autonomic Nervous SystemQuantifying the amount of autonomic nervous system activity in an individual patient can be extremely important, because it provides a gauge of disease severity in a large number of diseases. Heart rate variability (HRV) calculated from both short-term and longer-term electrocardiograms is an ideal win

Download or read book Comprehensive Electrocardiology written by Peter W. Macfarlane and published by Springer Science & Business Media. This book was released on 2010-11-05 with total page 2310 pages. Available in PDF, EPUB and Kindle. Book excerpt: New edition of the classic complete reference book for cardiologists and trainee cardiologists on the theory and practice of electrocardiography, one of the key modalities used for evaluating cardiology patients and deciding on appropriate management strategies.

Download or read book Poincar Plot Methods for Heart Rate Variability Analysis written by Ahsan Habib Khandoker and published by Springer Science & Business Media. This book was released on 2013-08-15 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Poincaré plot (named after Henri Poincaré) is a popular two-dimensional visualization tool for dynamic systems due to its intuitive display of the dynamic properties of a system from a time series. This book presents the basis of Poincaré plot and focus especially on traditional and new methods for analysing the geometry, temporal and spatial dynamics disclosed by the Poincaré plot to evaluate heart rate variability (HRV). Mathematical descriptors of Poincaré plot have been developed to quantify the autonomic nervous system activity (sympathetic and parasympathetic modulation of heart rate). Poincaré plot analysis has also been used in various clinical diagnostic settings like diabetes, chronic heart failure, chronic renal failure and sleep apnea syndrome. The primary aims of quantification of the Poincaré plots are to discriminate healthy physiological systems from pathological conditions and to classify the stage of a disease. The HRV analysis by Poincaré plot has opened up ample opportunities for important clinical and research applications. Therefore, the present book can be used either for self-study, as a supplement to courses in linear and nonlinear systems, or as a modern monograph by researchers in this field of HRV analysis.

Download or read book Heart Rate Variability Clinical Applications and Interaction between HRV and Heart Rate written by Karin Trimmel and published by Frontiers Media SA. This book was released on 2015-10-07 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last decades, assessment of heart rate variability (HRV) has increased in various fields of research. HRV describes changes in heartbeat intervals, which are caused by autonomic neural regulation, i.e. by the interplay of the sympathetic and the parasympathetic nervous systems. The most frequent application of HRV is connected to cardiological issues, most importantly to the monitoring of post-myocardial infarction patients and the prediction of sudden cardiac death. Analysis of HRV is also frequently applied in relation to diabetes, renal failure, neurological and psychiatric conditions, sleep disorders, psychological phenomena such as stress, as well as drug and addiction research including alcohol and smoking. The widespread application of HRV measurements is based on the fact that they are noninvasive, easy to perform, and in general reproducible – if carried out under standardized conditions. However, the amount of parameters to be analysed is still rising. Well-established time domain and frequency domain parameters are discussed controversially when it comes to their physiological interpretation and their psychometric properties like reliability and validity, and the sensitivity to cardiovascular properties of the variety of parameters seems to be a topic for further research. Recently introduced parameters like pNNxx and new dynamic methods such as approximate entropy and detrended fluctuation analysis offer new potentials and warrant standardization. However, HRV is significantly associated with average heart rate (HR) and one can conclude that HRV actually provides information on two quantities, i.e. on HR and its variability. It is hard to determine which of these two plays a principal role in the clinical value of HRV. The association between HRV and HR is not only a physiological phenomenon but also a mathematical one which is due to non-linear (mathematical) relationship between RR interval and HR. If one normalizes HRV to its average RR interval, one may get ‘pure’ variability free from the mathematical bias. Recently, a new modification method of the association between HRV and HR has been developed which enables us to completely remove the HRV dependence on HR (even the physiological one), or conversely enhance this dependence. Such an approach allows us to explore the HR contribution to the clinical significance of HRV, i.e. whether HR or its variability plays a main role in the HRV clinical value. This Research Topic covers recent advances in the application of HRV, methodological issues, basic underlying mechanisms as well as all aspects of the interaction between HRV and HR.

Download or read book Heart Rate Variability Analysis with the R package RHRV written by Constantino Antonio García Martínez and published by Springer. This book was released on 2024-10-04 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces readers to the fundamental concepts of Heart Rate Variability (HRV) and its most important analysis algorithms using a hands-on approach based on the open-source RHRV software. HRV refers to the variation over time of the intervals between consecutive heartbeats. Despite its apparent simplicity, HRV is one of the most important markers of autonomic nervous system activity and it has been recognized as a useful predictor of several pathologies. The book discusses all the basic HRV topics, including the physiological contributions to HRV, clinical applications, HRV data acquisition, HRV data manipulation and HRV analysis using time-domain, frequency-domain, time-frequency, nonlinear and fractal techniques. Detailed examples based on real data sets are provided throughout the book to illustrate the algorithms and discuss the physiological implications of the results. Offering a comprehensive guide to analyzing beat information with RHRV, the book is intended for masters and Ph.D. students in various disciplines such as biomedical engineering, human and veterinary medicine, biology, and pharmacy, as well as researchers conducting heart rate variability analyses on both human and animal data. The second edition of the book has been updated to RHRV version 5.0. This version introduces a functionality to perform heart rate variability analysis on entire populations. This functionality automates and streamlines both the calculation of HRV indices in the time, frequency, and nonlinear domains, as well as the subsequent statistical analysis.

Download or read book Heart Failure A Companion to Braunwald s Heart Disease E Book written by G. Michael Felker and published by Elsevier Health Sciences. This book was released on 2019-02-06 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt: Up-to-date, authoritative and comprehensive, Heart Failure, 4th Edition, provides the clinically relevant information you need to effectively manage and treat patients with this complex cardiovascular problem. This fully revised companion to Braunwald’s Heart Disease helps you make the most of new drug therapies such as angiotensin receptor neprilysin inhibitors (ARNIs), recently improved implantable devices, and innovative patient management strategies. Led by internationally recognized heart failure experts Dr. G. Michael Felker and Dr. Douglas Mann, this outstanding reference gives health care providers the knowledge to improve clinical outcomes in heart failure patients. Focuses on a clinical approach to treating heart failure, resulting from a broad variety of cardiovascular problems. Covers the most recent guidelines and protocols, including significant new updates to ACC, AHA, and HFSA guidelines. Covers key topics such as biomarkers and precision medicine in heart failure and new data on angiotensin receptor neprilysin inhibitors (ARNIs). Contains four new chapters: Natriuretic Peptides in Heart Failure; Amyloidosis as a Cause of Heart Failure; HIV and Heart Failure; and Neuromodulation in Heart Failure. Covers the pathophysiological basis for the development and progression of heart failure. Serves as a definitive resource to prepare for the ABIM’s Heart Failure board exam. 2016 British Medical Association Award: First Prize, Cardiology (3rd Edition).

Download or read book Z Score Neurofeedback written by Robert W. Thatcher and published by Academic Press. This book was released on 2014-09-20 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neurofeedback is utilized by over 10,000 clinicians worldwide with new techniques and uses being found regularly. Z Score Neurofeedback is a new technique using a normative database to identify and target a specific individual’s area of dysregulation allowing for faster and more effective treatment. The book describes how to perform z Score Neurofeedback, as well as research indicating its effectiveness for a variety of disorders including pain, depression, anxiety, substance abuse, PTSD, ADHD, TBI, headache, frontal lobe disorders, or for cognitive enhancement. Suitable for clinicians as well as researchers this book is a one stop shop for those looking to understand and use this new technique. Contains protocols to implement Z score neurofeedback Reviews research on disorders for which this is effective treatment Describes advanced techniques and applications

Download or read book Clinical Assessment of the Autonomic Nervous System written by Satoshi Iwase and published by Springer. This book was released on 2016-09-08 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes newly developed methods of assessing the autonomic nervous system. Up-to-date information on microneurographic analysis of human cardiovascular and thermoregulatory function in humans, heart rate variability, and 131I-metaiodobenzylguanidine (MIBG) scintigraphy are provided. Microneurography, which was originally developed as a technique to analyze the afferent muscle spindle, came to be used to analyze sympathetic nerve activity in the mid-1980s. In the twenty-first century, this technique has become prevalent all over the world especially in investigating the pathophysiology of human cardiovascular function. It is also now used in researching human thermoregulatory function. Heart rate variability is another valuable tool in investigating the current status of human vagal function and in predicting future cardiovascular disease. MIBG is also used to assess cardiac noradrenergic function, especially decreases associated with Parkinson’s disease, Lewy body disease, and multisystem atrophy. Overviews of recent advances in these three important assessments are provided by leading experts.Clinical Assessment of the Autonomic Nervous System is a useful resource for neurologists and researchers of clinical neurophysiology.

Download or read book Pediatric Sleep Medicine written by David Gozal and published by Springer Nature. This book was released on 2021-04-15 with total page 719 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides comprehensive coverage of all aspects related to pediatric sleep and its associated disorders. It addresses the ontogeny and maturational aspects of physiological sleep and circadian rhythms, as well as the effects of sleep on the various organ systems as a function of development. Organized into nine sections, the book begins with a basic introduction to sleep, and proceeds into an extensive coverage of normative sleep and functional homeostasis. Part three then concisely examines the humoral and developmental aspects of sleep, namely the emerging role of metabolic tissue and the intestinal microbiota in regulation. Parts four, five, and six discuss diagnoses methods, techniques in sleep measurement, and specific aspects of pharmacotherapy and ventilator support for the pediatric patient. Various sleep disorders are explored in part seven, followed by an in-depth analysis of obstructive sleep apnea in part eight. The book concludes with discussions on the presence of sleep issues in other disorders such as Down syndrome, obesity, cystic fibrosis, and asthma. Written by recognized leaders in the field, Pediatric Sleep Medicine facilitates an extensive learning experience for practicing physicians who encounter specific sleep-related issues in their practice.

Download or read book Heart Rate Variability Analysis with the R package RHRV written by Constantino Antonio García Martínez and published by Springer. This book was released on 2017-09-18 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces readers to the basic concepts of Heart Rate Variability (HRV) and its most important analysis algorithms using a hands-on approach based on the open-source RHRV software. HRV refers to the variation over time of the intervals between consecutive heartbeats. Despite its apparent simplicity, HRV is one of the most important markers of the autonomic nervous system activity and it has been recognized as a useful predictor of several pathologies. The book discusses all the basic HRV topics, including the physiological contributions to HRV, clinical applications, HRV data acquisition, HRV data manipulation and HRV analysis using time-domain, frequency-domain, time-frequency, nonlinear and fractal techniques. Detailed examples based on real data sets are provided throughout the book to illustrate the algorithms and discuss the physiological implications of the results. Offering a comprehensive guide to analyzing beat information with RHRV, the book is intended for masters and Ph.D. students in various disciplines such as biomedical engineering, human and veterinary medicine, biology, and pharmacy, as well as researchers conducting heart rate variability analyses on both human and animal data.

Download or read book Human Baroreflexes in Health and Disease written by Dwain L. Eckberg and published by . This book was released on 1992 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nerve endings in the walls of the carotid sinuses and the aortic arch transduce arterial pressure changes and provide the central nervous system with a steady stream of encoded information. On the basis of this information, efferent autonomic neural activity is modulated finely, and the neurohumoral milieu of the heart and the blood vessels is adjusted on a second-to-second basis. The arterial baroreflex may be the most important of the cardiovascular control mechanisms, because the baroreflex, above all other reflex mechanisms, is the one whose speed is most adequate to respond rapidly to the abrupt transients of arterial pressure that occur in daily life. This volume presents the many experimental methods available for use in humans that have been recently developed. Some are ingenious and yield results that earlier might have been thought impossible to obtain from human volunteers. Development of these new methods has increased the scientific credibility of human baroreflex research, and this work discusses the advances made in these studies. It clearly describes the existing deficiencies in the understanding of baroreflex mechanisms, and suggests methods for future research in this developing field.

Download or read book Clinical Guide to Cardiology written by Christian Fielder Camm and published by John Wiley & Sons. This book was released on 2016-03-07 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Clinical Guide to Cardiology is a quick-reference resource, packed full of bullet points, diagrams, tables and algorithms for the key concepts and facts for important presentations and conditions within cardiology. It provides practical, evidence-based information on interventions, investigations, and the management of clinical cardiology. Key features include: A clear evidence-base providing key guidelines and clinical trials in each chapter Coverage of examination techniques, common conditions, imaging modalities (including ECGs, chest X-rays, MRI and CT), interventional therapies, and pharmacology A companion website at www.wiley.com/go/camm/cardiology featuring audio clips, developed for differing levels of knowledge, that explain key concepts or an area in greater detail, as well as numerous additional clinical case studies, audio scripts, and self-assessment material

Download or read book Sex and Cardiac Electrophysiology written by Marek Malik and published by Academic Press. This book was released on 2020-07-11 with total page 986 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sex and Cardiac Electrophysiology: Differences in Cardiac Electrical Disorders Between Men and Women is a comprehensive investigation into all aspects of sex differences in cardiac electrophysiology. As there are substantial differences between female and male patients in physiology, pathology triggering factors, disease progression, clinical approaches and treatment outcome, this book provides a comprehensive examination. In cardiology, the differences between women and men are more recognized, hence this title summarizes these important differences, providing the essential information needed for clinical specialists and researchers involved in the design and implementation of clinical studies. Explores topics ranging from the physiologic differences between women and men to the differences in clinical handling of arrhythmic disorders between female and male patients Provides sex differences in cardiac electrophysiology in separate chapters Covers the sex differences of cardiac electrical disorders, providing insights beyond cardiac metabolic syndrome, hypertension, atherogenesis and heart failure

Download or read book Epileptic Syndromes in Infancy Childhood and Adolescence 5th edition written by Bureau Michelle and published by John Libbey Eurotext. This book was released on 2012-11-12 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ultimate reference book : the 5th updated edition of the famous “blue guide”. Incluided : A DVD with new sequences completes each chapter! Epileptology changes. The syndromic approach is completed by an etiological approach, based on the major advances in genetics and functional genetics. New entities have found their place, and a purely descriptive, “electroclinical” approach is no longer adapted in many circumstances. The 5th edition of the Blue Guide includes the most recent advances. It was necessary to justify the physiological, epidemiologic, genetic and therapeutic approaches and to consider them in the light of the new classification efforts, which are still in the making. Nevertheless, the description of epileptic syndromes, both classical and recent, remains at the core of this book.