Download or read book Regulation of Cardiac Contractility written by R. John Solaro and published by Biota Publishing. This book was released on 2011-04-01 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Fluid Resuscitation written by Institute of Medicine and published by National Academies Press. This book was released on 1999-11-05 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Regulation of Coronary Blood Flow written by Michitoshi Inoue and published by Springer Science & Business Media. This book was released on 2013-11-09 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book An Introduction to Cardiovascular Physiology written by J R Levick and published by Butterworth-Heinemann. This book was released on 2013-10-22 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Anatomy and Physiology written by J. Gordon Betts and published by . This book was released on 2013-04-25 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cardiovascular Physiology Concepts written by Richard E. Klabunde and published by Lippincott Williams & Wilkins. This book was released on 2020-12-01 with total page 689 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Control of Cardiac Output written by David Young and published by Biota Publishing. This book was released on 2010-01-01 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although cardiac output is measured as the flow of blood from the left ventricle into the aorta, the system that controls cardiac output includes many other components besides the heart itself. The heart’s rate of output cannot exceed the rate of venous return to it, and therefore, the factors governing venous return are primarily responsible for control of output from the heart. Venous return is affected by its pressure gradient and resistance to flow throughout the vascular system. The pressure gradient for venous return is a function of several factors including the blood volume flowing through the system, the unstressed vascular volume of the circulatory system, its capacitance, mean systemic pressure, and right atrial pressure. Resistance to venous return is the sum of total vascular resistance from the aortic valve to the right atrium. The sympathetic nervous system and vasoactive circulating hormones affect short-term resistance, whereas local tissue blood flow autoregulatory mechanisms are the dominant determinants of long-term resistance to venous return. The strength of contraction of the heart responds to changes in atrial pressure driven by changes in venous return, with small changes in atrial pressure eliciting large changes in strength of contraction, as described by the Frank–Starling mechanism. In addition, the autonomic nervous system input to the heart alters myocardial pumping ability in response to cardiovascular challenges. The function of the cardiovascular system is strongly affected by the operation of the renal sodium excretion–body fluid volume–arterial pressure negative feedback system that maintains arterial blood pressure at a controlled value over long periods. The intent of this volume is to integrate the basic knowledge of these cardiovascular system components into an understanding of cardiac output regulation. Table of Contents: Introduction / Venous Return / Cardiac Function / Integrated Analysis of Cardiac Output Control / Analysis of Cardiac Output Regulation by Computer Simulation / Analysis of Cardiac Output Control in Response to Challenges / Conclusion / References / Author Biography
Download or read book Ventricular Function written by David C. Warltier and published by Lippincott Williams & Wilkins. This book was released on 1995 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Braunwald s Heart Disease written by Peter Libby and published by Elsevier Health Sciences. This book was released on 2007-11-21 with total page 8184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dr. Braunwald's masterwork returns ... bringing you the definitive guidance you need to overcome any challenge in clinical cardiology today, using the best approaches available! Hundreds of world authorities, many of them new to this edition, synthesize all of the recent developments that are revolutionizing practice - from the newest findings in molecular biology and genetics to the latest imaging modalities, interventional procedures, and medications. This multimedia e-dition includes not only the printed reference, but also access to the complete contents online, fully searchable, with regular updates and much more. The expertise of the contributors, the scope of the coverage, and the versatile, multimedia format all make this the ultimate reference for the practicing cardiologist. Locate the answers you need fast, thanks to a user-friendly, full-color design, complete with more than 1,500 color illustrations. Glean clinically actionable information quickly with Clinical Practice Points in every chapter. Access the complete contents of the 2-volume set online, fully searchable, plus regular updates to reflect the latest clinical developments · Focused Reviews · Commentaries · Late-Breaking Trials · and more. Apply the latest knowledge in your field with 7 new chapters on Acute Heart Failure · Device Therapy of Heart Failure · Emerging Therapies for Heart Failure · Complementary and Alternative Approaches to Management · Prevention and Management of Stroke · Hypertrophic Cardiomyopathy · and Coronary Arteriography Guidelines. Get fresh perspectives on your practice with contributions from more than 20 brand-new authors.
Download or read book Basic Physiology for Anaesthetists written by David Chambers and published by Cambridge University Press. This book was released on 2019-07-25 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: Easily understood, up-to-date and clinically relevant, this book provides junior anaesthetists with an essential physiology resource.
Download or read book Heart Takes the Stage written by Steenz and published by Andrews McMeel Publishing. This book was released on 2022-05-03 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Warm, funny, and a visual delight, Steenz's take on Heart of the City is next-level." –Dana Simpson, Phoebe and Her Unicorn This first book collection of Heart of the City comics by the strip’s new creator, Steenz, is packed with outstanding art, a diverse cast of characters, and engaging, positive storylines about friendship, pop culture, ghost stories, and a wide range of real-world issues. Heart Lamarr is a girl with big dreams who lives in Philadelphia with her single mom. She has her sights set on a life of theater, but she runs into plenty of drama off-stage, too. Luckily, her best friends Dean, Kat, and Charlotte form a stellar supporting cast to help Heart navigate the challenging world of school plays, cliques, rumors, and everything else middle school throws at them.
Download or read book Science of the Heart Exploring the Role of the Heart in Human Performance written by Rollin McCraty and published by . This book was released on 2015 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atlas of Critical Care Echocardiography written by Alexis Salerno and published by Springer Nature. This book was released on 2022-01-28 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: This atlas covers the basics of ultrasound physics, provides the necessary background to successfully perform TEE and TTE procedures, and provides tips and tricks that will prove invaluable in the critical care environment. It also features an abundance of high quality photographs, illustrations and videos as well as numerous case studies to test the reader's ability to apply knowledge to real-life clinical situations. Written by experts in the field, The Atlas of Critical Care Echocardiography is a concise, visual guide designed for use by all physicians who see cardiac patients in the ICU.
Download or read book Three dimensional Echocardiography written by Navin Chandar Nanda and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conduction System Of The Mammalian Heart The An Anatomico histological Study Of The Atrioventricular Bundle And The Purkinje Fibers written by Sunao Tawara and published by World Scientific. This book was released on 2000-05-25 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sunao Tawara's epoch-making work on the excitation conduction system of the mammalian heart paved the way for the advancement of modern cardiology in the 20th century. Even today, more than 90 years after the publication of the German monograph “Das Reizleitungssystem des Säugetierherzen”, his precise account of the conduction system from the atrioventricular node through the His-Purkinje system to the ordinary ventricular muscle fibers retains all of its original actuality.This English edition of Tawara's monograph will serve as an invaluable reference for both basic and clinical cardiological research in the years ahead.
Download or read book Hemodynamic Monitoring written by Michael R. Pinsky and published by Springer. This book was released on 2019-02-21 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, part of the European Society of Intensive Care Medicine textbook series, teaches readers how to use hemodynamic monitoring, an essential skill for today’s intensivists. It offers a valuable guide for beginners, as well as for experienced intensivists who want to hone their skills, helping both groups detect an inadequacy of perfusion and make the right choices to achieve the main goal of hemodynamic monitoring in the critically ill, i.e., to correctly assess the cardiovascular system and its response to tissue oxygen demands. The book is divided into distinguished sections: from physiology to pathophysiology; clinical assessment and measurements; and clinical practice achievements including techniques, the basic goals in clinical practice as well as the more appropriate hemodynamic therapy to be applied in different conditions. All chapters use a learning-oriented style, with practical examples, key points and take home messages, helping readers quickly absorb the content and, at the same time, apply what they have learned in the clinical setting. The European Society of Intensive Care Medicine has developed the Lessons from the ICU series with the vision of providing focused and state-of-the-art overviews of central topics in Intensive Care and optimal resources for clinicians working in Intensive Care.
Download or read book Inspirational Heart written by James Hardimon and published by Christian Faith Publishing, Inc.. This book was released on 2021-06-30 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: The three volumes of Inspirational Heart were written, motivated, and inspired by scriptures 2 Timothy 3 chapter verses 16–17 and Oprah Winfrey on her last going-off-the-air speech. She said, "If you believe God gave you a job and purpose in life, then you should basically put all your heart, mind, strength power, and body in to it." With that said, I put all my fibers and molecules to the atom into completion of these three volumes for God and all the people to be touched by this inspirational power of truth. Many valuable sources have revealed and believe there is power in the number 3, and this is why I vowed to write three volumes. These books consist of the power of God showing you your life naturally and spiritually in reference of the past, present, and future of your life, as well as operating together naturally and spiritually with fusion, science, biology, math, geometry, chemistry, psychology, alchemy, etc. One like the son of man with flaws like Moses, I am that I am with a strong Revelation revealed to me by the Lord and our God, the head of days, on how to explain and share with the readers, viewers, and followers more in detail how it was revealed to me how to go about experiencing and seeing His divine words of understanding, knowledge, wisdom, insight, Revelation, and power connected to Inspirational Heart Volumes 1, 2, and 3.
