Download or read book Speed Modulation of Rotary Blood Pumps written by Tohid Pirbodaghi and published by . This book was released on 2013 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanical Circulatory and Respiratory Support written by Shaun D. Gregory and published by Academic Press. This book was released on 2017-09-19 with total page 854 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanical Circulatory and Respiratory Support is a comprehensive overview of the past, present and future development of mechanical circulatory and respiratory support devices. Content from over 60 internationally-renowned experts focusses on the entire life-cycle of mechanical circulatory and respiratory support – from the descent into heart and lung failure, alternative medical management, device options, device design, implantation techniques, complications and medical management of the supported patient, patient-device interactions, cost effectiveness, route to market and a view to the future. This book is written as a useful resource for biomedical engineers and clinicians who are designing new mechanical circulatory or respiratory support devices, while also providing a comprehensive guide of the entire field for those who are already familiar with some areas and want to learn more. Reviews of the most cutting-edge research are provided throughout each chapter, along with guides on how to design new devices and which areas require specific focus for future research and development. Covers a variety of disciplines, from anatomy of organs and evolution of cardiovascular devices, to their clinical applications and the manufacturing and marketing of devices Provides engineering and clinical perspectives to assist readers in the design of a market appropriate device Discusses history, design, usage, and development of mechanical circulatory and respiratory support systems

Download or read book Rotary Blood Pumps written by Hikaru Matsuda and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rotary blood pumps increasingly are being used in open heart surgery and in assisted circulation for patients with heart disease. These rotary devices include vortex (centrifugal) and axial pumps, which can be utilized in conditions where the use of conventional pulsatile pumps would entail problems of cost and size. Rapid progress is now being made in developing new devices for controlling blood flow within the heart and great vessels as well as extracorporeally for use in coronary and intensive care units and, in the future, for long-term use. This book provides information on the physiology of nonpulsatile circulation, the development of rotary pump engineering, and the clinical application of rotary blood pumps. It also presents an overview of future developments in this important field.

Download or read book Mechanical Support for Heart Failure written by Jamshid H. Karimov and published by Springer Nature. This book was released on 2020-09-04 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive overview of mechanical circulatory support of the failing heart in adults and children. The book uniquely combines engineering knowledge and the clinician’s perspective into a single resource, while also providing insights into current and future development of mechanical circulatory support technology, such as ventricular assist devices, the total artificial heart and catheter-based technologies for heart failure. Topics featured in this book include: The history of mechanical circulatory device development. Fundamentals of hemodynamics support. Clinical management of mechanical circulatory devices. Surgical implantation techniques. Current limitations of device therapies in advanced heart failure. Advanced and novel devices in the development pipeline. Opportunities for advancement in the field. Mechanical Support for Heart Failure: Current Solutions and New Technologies is a must-have resource for not only physicians, residents, fellows, and medical students in cardiology and cardiac surgery, but also clinical and basic researchers in biomedical engineering with an interest in mechanical circulatory support, heart failure, and new technological applications in medicine.

Download or read book Mechanical Circulatory Support A Companion to Braunwald s Heart Disease Ebook written by James K. Kirklin and published by Elsevier Health Sciences. This book was released on 2019-07-09 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offering comprehensive, authoritative coverage of mechanical circulatory support (MCS), this fully revised companion to Braunwald’s Heart Disease provides the clinically relevant information you need to effectively use this therapy to treat and manage end-stage heart failure. New editors and authors – experts in both cardiology and cardiovascular surgery – bring you fully up to date with the newest technology and devices, as well as basic science, clinical applications, adverse event monitoring and management, socioeconomic implications, future directions, and more. Covers all of the newest techniques, including new-generation devices. Discusses the management of common patient problems, highlighting cautions and outcomes, as well as pathophysiology and rationale for treatment. Brings you up to speed with the latest coverage of ventricular assist devices (VAD), extracorporeal membrane oxygenation (ECMO), next-generation centrifugal pumps, and total artificial hearts. Provides a complete clinical perspective of the latest scientific breakthroughs and analysis of the current literature. Includes coverage of the most recent guidelines and protocols, including MCS for pediatric and congenital heart disease; the Interagency Registry of Mechanically Assisted Circulatory Support (INTERMACS) as a tool to track and advance clinical practice; and cellular, molecular, genomic, and functional changes that occur in the failing heart in response to MCS. Presents practical evidence from the registry of thousands of cases to guide cardiologists, cardiovascular surgeons, emergency physicians, primary care physicians, and other team members on the best management course to follow for each particular patient.

Download or read book Cardiovascular engineering written by Christopher T. Nguyen and published by Frontiers Media SA. This book was released on 2022-12-16 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book American Society for Artificial Internal Organs ASAIO Platinum 70th Anniversary Special Edition written by Pramod Bonde and published by CRC Press. This book was released on 2024-10-03 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book celebrates two decades of groundbreaking research published in the ASAIO Journal, marking significant advancements in artificial organs and circulatory support. The American Society for Artificial Internal Organs ASAIO Platinum 70th Anniversary book is a compilation of 50 of the top papers published in the ASAIO Journal over the last two decades that have contributed to the evolution of the field. The book includes tables listing the Top 100- cited, viewed, and downloaded, articles from the ASAIO Journal. It also lists the Top 10 Altmetric Scores by Year, 2015-2024. Topics range from artificial vision for the blind, and control systems for blood glucose, to the development of an artificial placenta IV and engineering 3D bio-artificial heart muscle, and much more. This book represents early ideas and concepts, new treatments and devices that changed future clinical care and some early concepts that challenge the status quo. With contributions from leading experts, the ASAIO 70th Anniversary Book serves as a comprehensive resource for anyone interested in the forefront of artificial organ technology and its impact on improving patient outcomes. This book is intended for clinicians, scientists, engineers, and academics working for the advancement and development of innovative medical device technologies.

Download or read book A Concept for Direct Control of Rotary Blood Pump Speed by Inlet Pressure written by Ibrahim Seven and published by . This book was released on 2011 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heart failure remains a major health problem for the world. Heart transplantation is the most effective treatment for end stage heart failure. A major problem with heart transplantation is finding adequate numbers of appropriate donors. The lack of donor numbers in the world creates a significant clinical need for blood pumping devices. The ability of ventricular assist devices to relieve the consequences of less than terminal heart failure further creates a need for assist therapy. Current new ventricular assist devices are built around continuous flow technology. These nonpulsatile assist devices have had major clinical success in relieving symptoms and increasing patient survival. However they have a control issue as opposed the first generation pulsatile Ventricular Assist Devices (VADs) in that their output is sensitive to pressure difference, not primarily to inlet pressure. We have developed a rotodynamic blood pump speed management concept that results in a pump that responds to inlet pressure in a Starling law-like manner without active electronic controls or pressure sensors. The long term goal of this project is to develop a VAD system which responds as the natural human heart does. The pump speed is controlled by an adjunct electromechanical inlet conduit. The inlet conduit has 2 integrated cylinders. The inner cylinder is the blood flow pathway, and is flexible in order to expand/collapse in response to inlet blood pressure. The outer cylinder is used as the coil of a tank circuit. There is also a ferrofluid reservoir which is connected to the space between the 2 cylinders. The majority of ferrofluid is in the reservoir when inlet pressure is high, but ferrofluid flows into the core of the coil when inlet pressure is low. The inductance of the coil varies in response to the volume of the ferrofluid within the core. Therefore the natural frequency of the tank circuit varies and the impedance of the tank circuit changes. The control circuit is connected in series with the motor leads. Thus the voltage change across the control circuit directly controls the amplitude of the voltage across the motor leads. The motor speed changes in response to the amplitude of the voltage change. The system is operated at 10 MHz frequency in order to minimize the component size and maximize the Q factor. The specific aims of this thesis are to: 1) Explore the elementary feasibility of this tank circuit concept 2) Explore and define the issues that will be involved for developing such systems in the future.

Download or read book Computational biomechanics for ventricle arterial dysfunction and remodeling in heart failure volume II written by Yunlong Huo and published by Frontiers Media SA. This book was released on 2023-01-09 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Textbook of Transplantation and Mechanical Support for End Stage Heart and Lung Disease 2 Volume Set written by Yaron D. Barac and published by John Wiley & Sons. This book was released on 2023-09-05 with total page 2642 pages. Available in PDF, EPUB and Kindle. Book excerpt: Textbook of Transplantation and Mechanical Support for End-Stage Heart and Lung Disease Comprehensive textbook covering all aspects of the care of patients with advanced heart or lung disease Transplantation and Mechanical Support for End-Stage Heart and Lung Disease is the most comprehensive and contemporary textbook available that addresses the medical and surgical treatment options for patients with end-stage heart and lung disease. All facets of these complex and resource-intensive therapies are covered by leading experts — including the basics of transplant immunology, databases, regulatory and ethical aspects of transplantation and conventional and new modalities of donor organ harvest. Transplantation and Mechanical Support for End-Stage Heart and Lung Disease includes further information on topics such as: Historical developments that facilitated heart and lung transplantation; engineering advances in continuous flow technologies Transplant organizations, oversight, structure, process, databases and registries in the thoracic transplants and MCS field Current strategies in immune modulation, desensitization protocols and mechanisms of allograft rejection and tolerance/immunosenescence Detailed descriptions of donor and recipient surgical procedures as well as comprehensive implantation techniques for all available short- and long-term mechanical circulatory support devices, including ECMO Organ allocation and prioritization, donor evaluation, high risk donors, marginal donors, and risk assessment Richly enhanced with summary tables and color illustrations to provide an engaging and supportive learning experience, the book will serve as a highly valuable source of contemporary knowledge for medical students, residents, nurses, perfusionists, physicians and surgeons involved in the care of these desperately ill group of patients. “This comprehensive book covers all aspects of advanced heart and lung failure treatment, including shock, short-term and durable mechanical assistance, as well as transplantation. The in-depth information will be welcome by newcomers in the field as well as seasoned veterans.” —Andreas Zuckermann, M.D Vice-Chair, Department of Cardiac Surgery, Director of Cardiac Transplantation Program, Medical University of Vienna, Vienna General Hospital “This comprehensive tour-de-force compendium covers practical issues of clinical administration, program development, care pathways, ongoing challenges and opportunities in each treatment area as a must go-to reference for guidance in the rapidly evolving fields of mechanical circulatory support and transplantation.” —Mandeep R. Mehra, MBBS, MSc, FRCP Executive Director, Center for Advanced Heart Disease, Brigham and Women’s Hospital, Harvard Medical School “This unique textbook authored by key opinion leaders is a refreshing ???wind of change??? in our field, one that will well serve all professionals involved in the care of end-stage heart and lung patients for many years to come.” —Marcelo Cypel MD, MSc, FACS, FRCSC Surgical Director Ajmera Transplant Centre at UHN , University of Toronto

Download or read book Mechanical Circulatory Support An Issue of Cardiology Clinics E Book written by Palak Shah and published by Elsevier Health Sciences. This book was released on 2018-10-11 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This issue of Cardiology Clinics, edited by Drs. Palak Shah and Jennifer Cowger, will focus on Mechanical Circulatory Support. Topics include, but are not limited to, The Evolution of Mechanical Circulatory Support, Continuous-flow Device Engineering and Pump Technology, Surgical Implantation: Perspective and Techniques, Temporary Circulatory Support and ECMO, Durable MCS Candidate Selection, Perioperative Management of the Right and Left Ventricle, Quality of Life, Frailty and Cognitive Impairment in the MCS Candidate, Microbiology and Infections in VAD recipients, Gastrointestinal Bleeding, Cerebrovascular Accident, Antithrombotic Strategies and Device Thrombosis, Impact of MCS on Post-Transplant Outcomes, Hemodynamic Pump-Patient Interactions & VAD Imaging, Ambulatory Patient Management, and Imaging in VAD recipients.

Download or read book Annual Update in Intensive Care and Emergency Medicine 2016 written by Jean-Louis Vincent and published by Springer. This book was released on 2016-03-23 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Annual Update compiles the most recent developments in experimental and clinical research and practice in one comprehensive reference book. The chapters are written by well recognized experts in the field of intensive care and emergency medicine. It is addressed to everyone involved in internal medicine, anesthesia, surgery, pediatrics, intensive care and emergency medicine.

Download or read book Mechanical Circulatory Support in End Stage Heart Failure written by Andrea Montalto and published by Springer. This book was released on 2017-07-14 with total page 601 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a detailed practical guide to the use of ventricular assist devices and total artificial hearts to provide mechanical circulatory support (MCS) in patients with end-stage heart failure. It explains why MCS may be indicated, which patients require MCS, when and how to implant ventricular assist devices or a total artificial heart, and how to avoid potential complications of MCS. Management throughout the period of care is described, from preimplantation to follow-up, and both typical and atypical cases are discussed. The text features numerous helpful tips and tricks relating to surgical and nonsurgical management and is supported by a wealth of high-quality illustrations that document the preoperative evaluation and implantation techniques. Heart transplantation remains the gold standard for the treatment of patients suffering from end-stage heart failure, but the shortage of donors has led to an increase in the use of MCS. This book will assist all physicians, and especially cardiologists and anesthesiologists, who are involved in the care of these patients.

Download or read book Identifying Physiologically Significant Pumping State Transitions in Implantable Rotary Blood Pumps Used as Left Ventricular Assist Devices An In Vivo Study written by and published by . This book was released on 2001 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The VentrAssist implantable rotary blood pump (IRBP) is a centrifugal pump that uses a hydrodynamic bearing to support its impeller. The pump is to be used as a left ventricular assist device (LVAD). Varying pump speed can control the degree of left ventricular assistance. By increasing impeller speed, it is possible to transition from the normal physiological state of ventricular ejection (VE) to a state where the aortic valve remains closed (AC) throughout the cardiac cycle. Using the non-invasive parameter of instantaneous impeller speed in an ovine experimental model (N=3), we investigated state transitions. The cardiovascular system of the animal was perturbed by pharmacological intervention or by exsanguination. A total of six pump speed set point changes that caused physiological state transitions (VE to AC) were examined. A state transition index (STI) derived originally from data obtained in an in-vitro) mock loop setup was found to be directly applicable in the in-vivo studies and showed statistically significant (p

Download or read book Advances in Cardiovascular Technology written by Jamshid H. Karimov and published by Academic Press. This book was released on 2022 with total page 699 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Cardiovascular Technology: New Devices and Concepts is a comprehensive reference for cardiovascular devices of all types. For engineers, this book provides a basic understanding of underlying pathologies and their prevalence/incidence. It also covers what devices are available, how they are clinically used, and their impact on pathophysiology. In addition, the book presents the constraints imposed on device design and manufacture by the environment in which it is used (e.g., exposure to tissues within the body, blood in particular) and the primary requirements for each specific type of device, including its durability and resistance to fatigue. For clinicians, this book contains information on primary engineering challenges, the types of devices available, their advantages and disadvantages, and the (current and emerging) tools and materials available to device designers. Covers innovative procedures and devices in cardiovascular technology Gives an overview of the state-of-the-art technology and a view to the future Features contributions from engineers, clinicians and researchers, taking an interdisciplinary view of the field

Download or read book Modulation of CFTR and ENaC Channel Function by Interacting Proteins and Trafficking written by Lishuang Cao and published by Leuven University Press. This book was released on 2005 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Structure Function Relationship and Modulation of the T type Calcium Channel 1G written by Karel Talavera Perez and published by Leuven University Press. This book was released on 2004-09 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: