Force Of The Heart PDF Download
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Author | : R. John Solaro |
Publisher | : Biota Publishing |
Total Pages | : 46 |
Release | : 2011-04-01 |
Genre | : Medical |
ISBN | : 1615041753 |
Download Regulation of Cardiac Contractility Book in PDF, ePub and Kindle
Contractility describes the relative ability of the heart to eject a stroke volume (SV) at a given prevailing afterload (arterial pressure) and preload (end-diastolic volume; EDV). Various measures of contractility are related to the fraction as the SV/EDV or the ejection fraction, and the dynamics of ejection as determined from maximum pressure rise in the ventricles or arteries or from aortic flow velocities determined by echocardiography. At the cellular level, the ultimate determinant of contractility is the relative tension generation and shortening capability of the molecular motors (myosin cross-bridges) of the sarcomeres as determined by the rates and extent of Ca activation, the turnover kinetics of the cross-bridges, and the relative Ca responsiveness of the sarcomeres. Engagement of the regulatory signaling cascades controlling contractility occurs with occupancy and signal transduction by receptors for neurohumors of the autonomic nervous system as well as growth and stress signaling pathways. Contractility is also determined by the prevailing conditions of pH, temperature, and redox state. Short-term control of contractility is fully expressed during exercise. In long-term responses to stresses on the heart, contractility is modified by cellular remodeling and altered signaling that may compensate for a time but which ultimately may fail, leading to disorders.
Author | : Donald Bers |
Publisher | : Springer Science & Business Media |
Total Pages | : 468 |
Release | : 2012-12-06 |
Genre | : Medical |
ISBN | : 940100658X |
Download Excitation-Contraction Coupling and Cardiac Contractile Force Book in PDF, ePub and Kindle
How is the heartbeat generated? What controls the strength of contraction of heart muscle? What are the links between cardiac structure and function? How does our understanding of skeletal and smooth muscle and non-muscle cells influence our thinking about force development in the heart? Are there important species differences in how contraction is regulated in the heart? How do the new molecular data fit together in understanding the heart beat? What goes wrong in ischemia, hypertrophy, and heart failure? This book paints a modern `portrait' of how the heart works and in this picture the author shows a close-up of the structural, biochemical, and physiological links between excitation and contraction. The author takes the reader through a series of important, interrelated topics with great clarity and continuity and also includes many useful illustrations and tables. The book starts by considering the cellular structures involved in excitation-contraction coupling and then described the characteristics of the myofilaments as the end effector of excitation-contraction coupling. A general scheme of calcium regulation is described and the possible sources and sinks of calcium are discussed in simple, but quantitative terms. The cardiac action potential and its many underlying currents are reviewed. Then the characteristics of some key calcium transport systems (calcium channels, sodium/calcium exchange and SR calcium uptake and release) are discussed in detail. This is then built into a more integrated picture of calcium regulation in succeeding chapters by detailed discussions of excitation-calcium coupling mechanisms (in skeletal, cardiac, and smooth muscle), the interplay between calcium regulatory processes, and finally mechanisms of cardiac inotropy, calcium overload, and dysfunction (e.g., ischemia, hypertrophy, and heart failure). Excitation-Contraction Coupling and Cardiac Contractile Force – Second Edition is an invaluable source of information for anyone who is interested in how the heart beat is controlled and especially suited for students of the cardiovascular system at all levels from medical/graduate students through senior investigators in related fields.
Author | : Michitoshi Inoue |
Publisher | : Springer Science & Business Media |
Total Pages | : 330 |
Release | : 2013-11-09 |
Genre | : Medical |
ISBN | : 4431683674 |
Download Regulation of Coronary Blood Flow Book in PDF, ePub and Kindle
Research centering on blood flow in the heart continues to hold an important position, especially since a better understanding of the subject may help reduce the incidence of coronary arterial disease and heart attacks. This book summarizes recent advances in the field; it is the product of fruitful cooperation among international scientists who met in Japan in May, 1990 to discuss the regulation of coronary blood flow.
Author | : David C. Warltier |
Publisher | : Lippincott Williams & Wilkins |
Total Pages | : 404 |
Release | : 1995 |
Genre | : Medical |
ISBN | : |
Download Ventricular Function Book in PDF, ePub and Kindle
Author | : Richard E. Klabunde |
Publisher | : Lippincott Williams & Wilkins |
Total Pages | : 689 |
Release | : 2020-12-01 |
Genre | : Medical |
ISBN | : 1975150090 |
Download Cardiovascular Physiology Concepts Book in PDF, ePub and Kindle
Praised for its concise coverage, this highly accessible monograph lays a foundation for understanding the underlying concepts of normal cardiovascular function and offers a welcome alternative to a more mechanistically oriented approach or an encyclopedic physiology text. Clear explanations, ample illustrations and engaging clinical cases and problems provide the perfect guidance for self-directed learning and prepare you to excel in clinical practice.
Author | : J. Gordon Betts |
Publisher | : |
Total Pages | : 0 |
Release | : 2013-04-25 |
Genre | : |
ISBN | : 9781947172807 |
Download Anatomy and Physiology Book in PDF, ePub and Kindle
Author | : Joint National Committee on Detection, Evaluation, and Treatment of High Blood Pressure |
Publisher | : |
Total Pages | : 20 |
Release | : |
Genre | : Hypertension |
ISBN | : |
Download Report of the Joint National Committee on Detection, Evaluation, and Treatment of High Blood Pressure Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 12 |
Release | : |
Genre | : |
ISBN | : |
Download THE FORCE OF A FULL HEART Book in PDF, ePub and Kindle
Author | : Barry J. Maron |
Publisher | : John Wiley & Sons |
Total Pages | : 527 |
Release | : 2008-04-15 |
Genre | : Medical |
ISBN | : 140514615X |
Download Diagnosis and Management of Hypertrophic Cardiomyopathy Book in PDF, ePub and Kindle
Diagnosis and Management of Hypertrophic Cardiomyopathy is aunique, multi-authored compendium of information regarding thecomplexities of clinical and genetic diagnosis, natural history,and management of hypertrophic cardiomyopathy (HCM)—the mostcommon and important of the genetic cardiovasculardiseases—as well as related issues impacting the health oftrained athletes. Edited by Dr. Barry J. Maron, a world authority on HCM, and withmajor contributions from all of the international experts in thisfield, this book provides a single comprehensive source ofinformation concerning HCM. Recent advances in the field arediscussed, including the importance of left ventricular outflowtract obstruction, the use of implantable defibrillators for theprevention of sudden death in young people, definition of thegenetic basis for HCM and its role in clinical diagnosis and riskstratification, the development of more precise strategies forassessing the level of risk for sudden death among all patientswith HCM, and the evolution of invasive interventions for heartfailure symptoms, such as surgical management and its alternatives(alcohol septal ablation and dual-chamber pacing). Key Features: Contributions from all experts in the field,representing diverse viewpoints regarding this heterogeneousdisease and related issues in athletes Information to dispel misunderstandings regarding issuesassociated with HCM and cardiovascular disease in athletes The only comprehensive source of information available on thetopic
Author | : Institute of Medicine |
Publisher | : National Academies Press |
Total Pages | : 208 |
Release | : 1999-11-05 |
Genre | : Medical |
ISBN | : 0309064813 |
Download Fluid Resuscitation Book in PDF, ePub and Kindle
Historically, 20% of all injured combatants die on the battlefield before they can be evacuated to a field hospital. Blood lossâ€"hemorrhageâ€"is the single major cause of death among those killed in action whose lives might otherwise be saved. Fluid resuscitation and the treatment of hypovolemia (the abnormally decreased volume of circulating fluid in the body) offer the greatest opportunity for reducing mortality and morbidity associated with battlefield casualties. In Fluid Resuscitation, a committee of experts assess current resuscitation fluids and protocols for the treatment of combat casualties and make recommendations for future research. Chapters focus on the pathophysiology of acute hemorrhagic shock, experience with and complications of fluid resuscitation, novel approaches to the treatment of shock, protocols of care at the site of injury, and future directions for research. The committee explicitly describes the similarities and differences between acute medical care during combat and civilian emergency trauma care. Fluid Resuscitation should help energize and focus research in both civilian and military emergency care and help save the lives of citizens and soldiers alike.