Theory Of Heart

In recent years there has been a growth in interest in studying the heart from the perspective of the physical sciences: mechanics, fluid flow, electromechanics. This volume is the result of a workshop held in July 1989 at the Institute for Nonlinear Sciences at the University of California at San Diego that brought together scientists and clinicians with graduate students and postdoctoral fellows who shared an interest in the heart. The chapters were prepared by the invited speakers as didactic reviews of their subjects but also include the structure, mechanical properties, and function of the heart and the myocardium, electrical activity of the heart and myocardium, and mathematical models of heart function.

Why do we demand happiness on terms that make happiness impossible? And what can we do about it? Acclaimed philosopher J. Budziszewski addresses these questions in the brilliantly persuasive book The Line Through the Heart, finding the answers in the natural law. The journey of exploration takes us through politics, religion, ethics, law, philosophy, and more, with Budziszewski as expert guide. While investigating the natural law and its implications, Budziszewski boldly confronts a wide range of contemporary issues, offering a newly integrated view of abortion, evolution, euthanasia, capital punishment, runaway courts, and the ersatz state religion built in the name of religious toleration. Written in Budziszewski's usual crystalline style, The Line Through the Heart shows that natural law is a matter of concern not merely to scholars but to everyone, for it touches how each of us lives, and how all of us live together. His profound examination of this subject helps us make sense of why habits that run against our nature have become second nature, and why our world seems to be going mad.

This original and lucid account of the complexities of love and its essential role in human well-being draws on the latest scientific research. Three eminent psychiatrists tackle the difficult task of reconciling what artists and thinkers have known for thousands of years about the human heart with what has only recently been learned about the primitive functions of the human brain. A General Theory of Love demonstrates that our nervous systems are not self-contained: from earliest childhood, our brains actually link with those of the people close to us, in a silent rhythm that alters the very structure of our brains, establishes life-long emotional patterns, and makes us, in large part, who we are. Explaining how relationships function, how parents shape their child’s developing self, how psychotherapy really works, and how our society dangerously flouts essential emotional laws, this is a work of rare passion and eloquence that will forever change the way you think about human intimacy.

One of the most time-consuming tasks in clinical medicine is seeking the opinions of specialist colleagues. There is a pressure not only to make referrals appropriate but also to summarize the case in the language of the specialist. This book explains basic physiologic and pathophysiologic mechanisms of cardiovascular disease in a straightforward manner, gives guidelines as to when referral is appropriate, and, uniquely, explains what the specialist is likely to do. It is ideal for any hospital doctor, generalist, or even senior medical student who may need a cardiology opinion, or for that ma.

An Introduction to Cardiovascular Physiology is designed primarily for students of medicine and physiology. This introductory text is mostly didactic in teaching style and it attempts to show that knowledge of the circulatory system is derived from experimental observations. This book is organized into 15 chapters. The chapters provide a fuller account of microvascular physiology to reflect the explosion of microvascular research and include a discussion of the fundamental function of the cardiovascular system involving the transfer of nutrients from plasma to the tissue. They also cover major advances in cardiovascular physiology including biochemical events underlying Starling's law of the heart, nonadrenergic, non-cholinergic neurotransmission, the discovery of new vasoactive substances produced by endothelium and the novel concepts on the organization of the central nervous control of the circulation. This book is intended to medicine and physiology students.

This presentation describes various aspects of the regulation of tissue oxygenation, including the roles of the circulatory system, respiratory system, and blood, the carrier of oxygen within these components of the cardiorespiratory system. The respiratory system takes oxygen from the atmosphere and transports it by diffusion from the air in the alveoli to the blood flowing through the pulmonary capillaries. The cardiovascular system then moves the oxygenated blood from the heart to the microcirculation of the various organs by convection, where oxygen is released from hemoglobin in the red blood cells and moves to the parenchymal cells of each tissue by diffusion. Oxygen that has diffused into cells is then utilized in the mitochondria to produce adenosine triphosphate (ATP), the energy currency of all cells. The mitochondria are able to produce ATP until the oxygen tension or PO2 on the cell surface falls to a critical level of about 4–5 mm Hg. Thus, in order to meet the energetic needs of cells, it is important to maintain a continuous supply of oxygen to the mitochondria at or above the critical PO2 . In order to accomplish this desired outcome, the cardiorespiratory system, including the blood, must be capable of regulation to ensure survival of all tissues under a wide range of circumstances. The purpose of this presentation is to provide basic information about the operation and regulation of the cardiovascular and respiratory systems, as well as the properties of the blood and parenchymal cells, so that a fundamental understanding of the regulation of tissue oxygenation is achieved.

This book covers the latest information on the anatomic features, underlying physiologic mechanisms, and treatments for diseases of the heart. Key chapters address animal models for cardiac research, cardiac mapping systems, heart-valve disease and genomics-based tools and technology. Once again, a companion of supplementary videos offer unique insights into the working heart that enhance the understanding of key points within the text. Comprehensive and state-of-the art, the Handbook of Cardiac Anatomy, Physiology and Devices, Third Edition provides clinicians and biomedical engineers alike with the authoritative information and background they need to work on and implement tomorrow’s generation of life-saving cardiac devices.

This book fills the gap in the literature on nursing theories by presenting the background information on situation specific theories such as philosophical bases and current status of situation specific theories and providing a collection of situation specific theories that have been developed. It provides specific guidelines for nursing research and practice, essentials for PhD and DNP students to complete the requirements for their degrees (e.g., dissertation, QI project). In addition, this book can be used in theory courses in other graduate nursing programs that require theoretical bases for their comprehensive exam or scholarly project (e.g., MSN, NP). Throughout nursing history, nursing theories have evolved within the contexts of changing and emerging theoretical needs of nursing discipline. Subsequently, several different types of nursing theories have been proposed, developed, and used in nursing education, research, and practice. Situation specific theories could be easily adopted and used in nursing practice and research due to their foci on specific populations or particular fields. Since situation specific theories were firstly proposed in 1990s, they became a major part of nursing theories in the past two decades, making this book appeals to all levels of nursing students.