Heart S Work

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.

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.

If you're like most parents, you have developed your own parenting strategy—sometimes it seems to work, and other times—based on the way your child behaves—you wonder if it's working at all. There are countless ways to try to get a child's attention and to effect change—but here's the truth—unless you deal with a child through his or her heart, you are not likely to see lasting change. In this breakthrough book, Dr. Scott Turansky and Joanne Miller, RN, BSN, reveal how you can learn to truly reach your child's heart to teach, train, and build a tremendous relationship. Parenting is Heart Work gives you the practical tools an easy-to-follow steps that will revolutionize how you: Turn Correction times into learning experiences. Equip your children to accept responsibility for their mistakes and meditate on the right things. Influence and adjust the values and beliefs your children hold. Maintain relationship with your children through love and emotional connectedness.

An instant national bestseller • A Reese's Book Club Pick • An instant New York Times bestseller • A New York Times Notable Book of 2022 • A Globe and Mail Best Book of 2022 • Named a Best Book of 2022 by People, TIME Magazine, The Washington Post, USA Today, NPR, Los Angeles Times, and Oprah Daily, and more From the #1 bestselling author of Little Fires Everywhere, comes the inspiring new novel about a mother’s unbreakable love. “It’s impossible not to be moved.” —Stephen King, The New York Times Book Review “Riveting, tender, and timely.” —People, Book of the Week “Thought-provoking, heart-wrenching…I was so invested in the future of this mother and son, and I can’t wait to hear what you think of this deeply suspenseful story!” —Reese Witherspoon (Reese’s Book Club Pick) Twelve-year-old Bird Gardner lives a quiet existence with his loving father, a former linguist who now shelves books in a university library. His mother Margaret, a Chinese American poet, left without a trace when he was nine years old. He doesn’t know what happened to her—only that her books have been banned—and he resents that she cared more about her work than about him. Then one day, Bird receives a mysterious letter containing only a cryptic drawing, and soon he is pulled into a quest to find her. His journey will take him back to the many folktales she poured into his head as a child, through the ranks of an underground network of heroic librarians, and finally to New York City, where he will finally learn the truth about what happened to his mother, and what the future holds for them both. Our Missing Hearts is an old story made new, of the ways supposedly civilized communities can ignore the most searing injustice. It’s about the lessons and legacies we pass on to our children, and the power of art to create change.

#1 NEW YORK TIMES BESTSELLER • In her latest book, Brené Brown writes, “If we want to find the way back to ourselves and one another, we need language and the grounded confidence to both tell our stories and be stewards of the stories that we hear. This is the framework for meaningful connection.” Don’t miss the five-part HBO Max docuseries Brené Brown: Atlas of the Heart! In Atlas of the Heart, Brown takes us on a journey through eighty-seven of the emotions and experiences that define what it means to be human. As she maps the necessary skills and an actionable framework for meaningful connection, she gives us the language and tools to access a universe of new choices and second chances—a universe where we can share and steward the stories of our bravest and most heartbreaking moments with one another in a way that builds connection. Over the past two decades, Brown’s extensive research into the experiences that make us who we are has shaped the cultural conversation and helped define what it means to be courageous with our lives. Atlas of the Heart draws on this research, as well as on Brown’s singular skills as a storyteller, to show us how accurately naming an experience doesn’t give the experience more power—it gives us the power of understanding, meaning, and choice. Brown shares, “I want this book to be an atlas for all of us, because I believe that, with an adventurous heart and the right maps, we can travel anywhere and never fear losing ourselves.”

#1 NEW YORK TIMES BESTSELLER • Brené Brown has taught us what it means to dare greatly, rise strong, and brave the wilderness. Now, based on new research conducted with leaders, change makers, and culture shifters, she’s showing us how to put those ideas into practice so we can step up and lead. Don’t miss the five-part HBO Max docuseries Brené Brown: Atlas of the Heart! NAMED ONE OF THE BEST BOOKS OF THE YEAR BY BLOOMBERG Leadership is not about titles, status, and wielding power. A leader is anyone who takes responsibility for recognizing the potential in people and ideas, and has the courage to develop that potential. When we dare to lead, we don’t pretend to have the right answers; we stay curious and ask the right questions. We don’t see power as finite and hoard it; we know that power becomes infinite when we share it with others. We don’t avoid difficult conversations and situations; we lean into vulnerability when it’s necessary to do good work. But daring leadership in a culture defined by scarcity, fear, and uncertainty requires skill-building around traits that are deeply and uniquely human. The irony is that we’re choosing not to invest in developing the hearts and minds of leaders at the exact same time as we’re scrambling to figure out what we have to offer that machines and AI can’t do better and faster. What can we do better? Empathy, connection, and courage, to start. Four-time #1 New York Times bestselling author Brené Brown has spent the past two decades studying the emotions and experiences that give meaning to our lives, and the past seven years working with transformative leaders and teams spanning the globe. She found that leaders in organizations ranging from small entrepreneurial startups and family-owned businesses to nonprofits, civic organizations, and Fortune 50 companies all ask the same question: How do you cultivate braver, more daring leaders, and how do you embed the value of courage in your culture? In this new book, Brown uses research, stories, and examples to answer these questions in the no-BS style that millions of readers have come to expect and love. Brown writes, “One of the most important findings of my career is that daring leadership is a collection of four skill sets that are 100 percent teachable, observable, and measurable. It’s learning and unlearning that requires brave work, tough conversations, and showing up with your whole heart. Easy? No. Because choosing courage over comfort is not always our default. Worth it? Always. We want to be brave with our lives and our work. It’s why we’re here.” Whether you’ve read Daring Greatly and Rising Strong or you’re new to Brené Brown’s work, this book is for anyone who wants to step up and into brave leadership.