Author: Sir Thomas Lewis
Publisher:
ISBN:
Category : Arrhythmia
Languages : en
Pages : 126

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Book Description

Author: Sir Thomas Lewis
Publisher:
ISBN:
Category : Arrhythmia
Languages : en
Pages : 150

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Book Description

Author: Karin Trimmel
Publisher: Frontiers Media SA
ISBN: 2889196526
Category : Physiology
Languages : en
Pages : 168

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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: Douglas L. Mann
Publisher: Elsevier Health Sciences
ISBN: 0323290647
Category : Medical
Languages : en
Pages : 2376

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Book Description
Ideal for cardiologists who need to keep abreast of rapidly changing scientific foundations, clinical research results, and evidence-based medicine, Braunwald’s Heart Disease is your indispensable source for definitive, state-of-the-art answers on every aspect of contemporary cardiology, helping you apply the most recent knowledge in personalized medicine, imaging techniques, pharmacology, interventional cardiology, electrophysiology, and much more! Practice with confidence and overcome your toughest challenges with advice from the top minds in cardiology today, who synthesize the entire state of current knowledge and summarize all of the most recent ACC/AHA practice guidelines. Locate the answers you need fast thanks to a user-friendly, full-color design with more than 1,200 color illustrations. Learn from leading international experts, including 53 new authors. Explore brand-new chapters, such as Principles of Cardiovascular Genetics and Biomarkers, Proteomics, Metabolomics, and Personalized Medicine. Access new and updated guidelines covering Diseases of the Aorta, Peripheral Artery Diseases, Diabetes and the Cardiovascular System, Heart Failure, and Valvular Heart Disease. Stay abreast of the latest diagnostic and imaging techniques and modalities, such as three-dimensional echocardiography, speckle tracking, tissue Doppler, computed tomography, and cardiac magnetic resonance imaging. Consult this title on your favorite e-reader, conduct rapid searches, and adjust font sizes for optimal readability.

Author: Francis Morris
Publisher: John Wiley & Sons
ISBN: 1444312499
Category : Medical
Languages : en
Pages : 112

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Book Description
Electrocardiography is an essential tool in diagnosing cardiacdisorders. This second edition of the ABC of ClinicalElectrocardiography allows readers to become familiar with the widerange of patterns seen in the electrocardiogram in clinicalpractice and covers the fundamentals of ECG interpretation andanalysis. Fully revised and updated, this edition includes a self-assessmentsection to aid revision and check comprehension, clear anatomicaldiagrams to illustrate key points and a larger format to show12-lead ECGs clearly and without truncation. Edited and written by leading experts, the ABC of ClinicalElectrocardiography is a valuable text for anyone managing patientswith heart disorders, both in general practice and in hospitals.Junior doctors and nurses, especially those working in cardiologyand emergency departments, as well as medical students, will findthis a vaulable introduction to the understanding of this keyclinical tool.

Author: Markad V. Kamath
Publisher: CRC Press
ISBN: 1466576057
Category : Medical
Languages : en
Pages : 523

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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: Onkar N. Tripathi
Publisher: Springer Science & Business Media
ISBN: 3642175759
Category : Science
Languages : en
Pages : 676

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Book Description
Pathological heart rhythms are a major health issue. In this book experts from various fields provide an important context for understanding the complicated molecular and cellular mechanisms that underlie normal and pathophysiological cardiac rhythms. Individual chapters cover a full range of topics, including the ionic basis of pacemaking, the role of specific channels and transporters in sinoatrial node pacemaking, altered intracellular Ca2+ handling in response to disease, computer modeling of the action potentials of pacemaker and working cardiomyocytes, genetic and molecular basis of inherited arrhythmias and a review of established and novel antiarrhythmic agents. Due to the key importance of the specialized pacemaker cells and tissue (sinoatrial and atrioventricular nodes) in maintaining heart rate and rhythm, special emphasis is placed on the peculiar electrophysiology of these cells.

Author: Sir Thomas Lewis
Publisher:
ISBN:
Category : Arrhythmia
Languages : en
Pages : 152

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Book Description

Author: Xue-Hong Wan
Publisher: Springer Nature
ISBN: 9811376778
Category : Medical
Languages : en
Pages : 382

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Book Description
The book covers basic theories, basic knowledge and basic skills on clinical diagnosis, basic requirements for doctors’ ethical conduct, clinical reasoning and documentation of medical records during the process of making a diagnosis. It consists of six parts, including ‘Symptoms’, ‘History Taking’, ‘Physical Examination’, ‘Supplementary Examination’, ‘Common Clinical Diagnosis Techniques’, and ‘Diagnostic Process and Clinical Reasoning’. A vocabulary index is included for easy reference at the end of the book. This book is compiled by authors of 14 Chinese medical schools and universities, whose years of experience in clinical diagnostics, rich overseas learning and working experiences. This book is included in the first round of English textbooks series for clinical medicine major of China's higher medical colleges; and is among "13th Five-Year" planning textbooks of National Health Commission of the People’s Republic of China. It is also an ideal textbook for MBBS (Bachelor of Medicine and Bachelor of Surgery) student It is a co-publication book with People's Medical Publishing House (PMPH). The ISBN of PMPH version in China is 978-7-117-23852-6.

Author: Peter W. Macfarlane
Publisher: Springer Science & Business Media
ISBN: 1848820453
Category : Medical
Languages : en
Pages : 2310

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Book Description
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.