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Author: M. Di Rienzo Publisher: IOS Press ISBN: 9789051993127 Category : Medical Languages : en Pages : 278
Book Description
An increasing number of studies indicate that the analysis of blood pressure and heart rate variability may be a valuable tool for the investigation of the mechanisms responsible for cardiovascular regulation in physiological and pathological conditions. The reader can find in the first part of this book an updated review of the techniques currently employed for the computer analysis of these signals with a particular attention to the most innovative approaches based on the non-linear analysis (including applications of the chaos theory, fractal analysis, I/f modelling) and the time-variant estimation of BP and HR characteristics. The biological interpretation of the results obtained by these computerized procedures and the applicability of these techniques in a clinical setting are fully addressed in the second part of the book.
Author: M. Di Rienzo Publisher: IOS Press ISBN: 9789051993127 Category : Medical Languages : en Pages : 278
Book Description
An increasing number of studies indicate that the analysis of blood pressure and heart rate variability may be a valuable tool for the investigation of the mechanisms responsible for cardiovascular regulation in physiological and pathological conditions. The reader can find in the first part of this book an updated review of the techniques currently employed for the computer analysis of these signals with a particular attention to the most innovative approaches based on the non-linear analysis (including applications of the chaos theory, fractal analysis, I/f modelling) and the time-variant estimation of BP and HR characteristics. The biological interpretation of the results obtained by these computerized procedures and the applicability of these techniques in a clinical setting are fully addressed in the second part of the book.
Author: Karin Trimmel Publisher: Frontiers Media SA ISBN: 2889196526 Category : Physiology Languages : en Pages : 168
Book Description
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.
Author: Marco Di Rienzo Publisher: IOS Press ISBN: 9789051994360 Category : Medical Languages : en Pages : 222
Book Description
e VOUS! is a complete introductory French program that makes learning French easier through its flexible and accessible approach. Now in its second edition, this innovative book integrates the best aspects of theories in second-language acquisition and focuses on the skills crucial to the learning and use of a foreign language in order to provide readers with a comprehensive introduction to French language and culture. The program incorporates high-frequency vocabulary that is of interest to today's readers, grammar explanations that are complete and comprehensible, a focus on all skills, task-based activities, and high-interest cultural topics that invite cross-cultural comparisons. The new, enhanced second edition of e VOUS! offers streamlined, visually enhanced grammar presentations, updated study tools, and optional access to the iLrn Heinle Learning, which includes an updated eBook, 40 new video-based pronunciation tutorials, 20 new culture videos, additional practice activities, and more!
Author: Markad V. Kamath Publisher: CRC Press ISBN: 1466576057 Category : Medical Languages : en Pages : 523
Book Description
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
Author: Josep Solà Publisher: Springer Nature ISBN: 3030247015 Category : Medical Languages : en Pages : 245
Book Description
This book is the first comprehensive overview of the emerging field of cuffless blood pressure monitoring. Increasing clinical evidence proves that longitudinal measurements of blood pressure allow for earlier detection and better management of multiple medical conditions and for superior prediction of cardiovascular events. Unfortunately, today’s clinical and industry standards for blood pressure monitoring still require the inflation of a pneumatic cuff around a limb each time a measurement is taken. Over the last decades clinicians, scientists and device manufacturers have explored the feasibility of technologies that reduce or even completely eliminate the need of cuffs, initiating the era of cuffless blood pressure monitoring. Among the existing literature, this book is intended to be a practical guide to navigate across this emerging field. The chapters of the handbook have been elaborated by experts and key opinion leaders in the domain, and will guide the reader along the clinical, scientific, technical, and regulatory aspects of cuffless blood pressure monitoring.
Author: Hector C Keun Publisher: Royal Society of Chemistry ISBN: 184973643X Category : Medical Languages : en Pages : 384
Book Description
This book describes the state of the art in the application of NMR spectroscopy to metabolomics and will be a key title for researchers and practitioners.
Author: Paul M. Lehrer Publisher: Guilford Publications ISBN: 1462548466 Category : Psychology Languages : en Pages : 690
Book Description
The leading clinical reference and text on stress management has now been significantly revised with 60% new material reflecting key developments in the field. Foremost experts review the "whats," "whys," and "how-tos" of progressive relaxation, biofeedback, meditation, hypnosis, cognitive methods, and other therapies. Chapters describe each method's theoretical foundations, evidence base, procedures, applications, and contraindications. Assessment and implementation are illustrated with extensive case examples. The volume examines the effects of stress on both mind and body, from basic science to practical implications for everyday life and health care. New to This Edition *Greatly expanded evidence base--every method is now supported by controlled clinical research. *Advances in knowledge about stress and the brain are integrated throughout. *Chapter on children and adolescents. *Chapter on selecting the best methods for individual patients. *Chapter on hyperventilation and carbon dioxide biofeedback. *Chapter on neuroinflammation.
Author: M. Di Rienzo
Author: M. Di Rienzo
Author: Karin Trimmel
Author: Marco Di Rienzo
Author: P. Grossman
Author: Marco Di Rienzo
Author: Nandu Goswami
Author: Markad V. Kamath
Author: Josep Solà
Author: Hector C Keun
Author: Paul M. Lehrer