The interplay between the careful analysis of clinical electrocardiograms and results from animal experiments have in the past 60 years resulted in provo cative and brill ant concepts on the mechanisms of cardiac arrhythmias in man. Many of the animal experiments however were done on open-chested dogs with cut cardiac nerves and under the influence of pharmaca. It is doubtful, therefore whether these results can be transferred without reser vation to the human situation. The introduction of electrical stimulation of the heart in clinical cardiology has opened new ways to study some aspects of cardiac arrhythmias directly in the unaesthesized patient. This study reports observations on patients who were admitted to the University Department of Cardiology, Wilhelmina Gasthuis, Amsterdam, for the evaluation and treatment of tachycardias. Electrically induced premature beats were used in an effort to elucidate the origin and mechanism of these tachycardias. The first chapter is on classification and diagnosis of tachy cardias with special emphasis on our current knowledge of the differential diagnosis between supraventricular tachycardias with aberrant conduction and ventricular tachycardias. This is followed by theoretical considerations on tachycardias especially in relation to the methods used in this study. After an outline of these methods the results of our studies in patients with atrial flutter, A-V junc tional tachycardias and tachycardias related to the pre-excitation syndrome are reported. A discussion on the value of electrical stimulation for the treatment of tachycardias is followed by a summary of our results.
* 1 year subscription to Hurst's THE HEART ONLINE-fast access to up-to-the-minute medicine * Extensive coverage of every aspect of cardiovascular disease * Indispensable UPDATES for THERAPY and CLINICAL TRIALS plus AccessMedicine News * CONCISE REVIEWS and EDITORIALS * DRUG DATABASE * ADVANCED SEARCH capability and QUICK LINKS to ONLINE RESOURCES * WELL ILLUSTRATED - 110 color plates of ultrasounds, 3-D images of heart anatomy, normal and diseased heart images * FAST AND DEEP SEARCHES - A powerful engine for locating precise information * ENHANCED NAVIGATION - Scrolling menus and robust cross-referencing for your convenience ENCYCLOPEDIC COVERAGE of CARDIOLOGY * A CONVENIENT DESK REFERENCE in PRINT and ONLINE * FAST ACCESS to CARDIOLOGY when you need it most * Must-have UPDATES and CLINICAL TRIALS on your desktop * ADVANCED SEARCH capability and BOOKMARK options * LEADING contributors offer the most relevant findings The most comprehensive database of cardiology in the world! If you don't own the 10th edition of Hurst's THE HEART, this is why you should: In order to navigate cardiology's rough terrain, today's physician needs reliable and current resources to effectively manage patients. The Hurst editorial board and contributors have developed the most comprehensive and reliable tool for optimal patient care. * Follow hot topics such as DIAGNOSTIC IMAGING, THE HUMAN GENOME, and INTERVENTIONAL TECHNIQUES as well AS NEW DRUG THERAPIES, PRACTICE GUIDELINES
As arrhythmias may be transient in nature and not seen during the shorter recording times of the standard ECG, ECG Holter monitoring allows the physician to make better informed decisions for the cardiac patient. The devices are worn by patients on an outpatient basis for days or weeks and can also be implanted subcutaneously. ECG Holter recordings are especially useful since they can be programmed individually for activation and specific tracing analysis. Designed for rapid study, this book contains 100 illustrative cases in ECG Holter monitoring. Each case consists of a tracing followed by a brief explanation of the findings. 100 Cases in ECG Holter is the perfect resource for busy physicians looking to optimize their skills at interpreting ECG Holter readings.
This volume, written by the leaders in the field, will provide a practical and comprehensive overview of the electrocardiogram (ECG). The ECG remains the most accessible and inexpensive diagnostic tool to evaluate the patient presenting with symptoms suggestive of acute myocardial ischemia. The ECG in Acute Myocardial Infarction and Unstable Angina, written by Drs. Hein Wellens, Anton Gorgels and Pieter Doevendans, is an excellent reference for any cardiac electrophysiologist, cardiologist, internist or emergency room physician.
“Variants of Ventricular Preexcitation: Recognition and Treatment provides a unique opportunity for general cardiologists and electrophysiologists to find in one text the intricacies of recognizing and treating a group of disorders that has intrigued physicians for more than 100 years.” --from the Foreword by Mark E. Josephson, MD, Chief, Cardiovascular Division, Beth Israel Deaconess Medical Center, Boston, USA Drs Sternick and Wellens combine their expertise in the diagnosis and treatment of cardiac arrhythmias to bring you this complete overview of decrementally conducting accessory pathways and their role in cardiac arrhythmias. This is the first book dedicated to these special types of accessory pathways, their recognition and management. By covering the uncommon varieties of ventricular preexcitation, this book supports you in improving patient care by: Helping you to identify decrementally conducting AV fibers- which comprise 3-5 % of all accessory AV pathways Explaining exactly what information can be obtained from the 12-lead ECG Showing how to identify and localize these pathways during an electrophysiologic study Detailing the proper treatment and how to treat these patients By explaining the fundamental pathophysiology as well as the diverse clinical presentation of arrhythmias, Drs Sternick and Wellens demystify the subject of the different variants of decrementally conducting accessory pathways leading to ventricular pre-excitation and their role in cardiac arrhythmias.
Now in an abridged second edition, Electrophysiological Foundations of Cardiac Arrhythmias focuses on teaching the fundamental concepts of cardiac cellular electrophysiology with an emphasis on the relationship of basic mechanisms to clinical cardiac arrhythmias. Understanding this relationship and the electrophysiological mechanisms underlying arrhythmogenesis will be invaluable to physicians entering the fields of cardiology and clinical electrophysiology, as well as those scientists and clinicians already working in these areas. These essential concepts of electrophysiology include discussion on action potentials, ion channels and currents, and mechanisms of arrhythmias, and provide the working knowledge that will enable the reader to approach a board exam confidently. Additionally, the authors build a base of understanding that will prepare the reader for more advanced texts, such as Josephson’s Clinical Cardiac Electrophysiology: Techniques and Interpretations.
The interplay between the careful analysis of clinical electrocardiograms and results from animal experiments have in the past 60 years resulted in provo cative and brill ant concepts on the mechanisms of cardiac arrhythmias in man. Many of the animal experiments however were done on open-chested dogs with cut cardiac nerves and under the influence of pharmaca. It is doubtful, therefore whether these results can be transferred without reser vation to the human situation. The introduction of electrical stimulation of the heart in clinical cardiology has opened new ways to study some aspects of cardiac arrhythmias directly in the unaesthesized patient. This study reports observations on patients who were admitted to the University Department of Cardiology, Wilhelmina Gasthuis, Amsterdam, for the evaluation and treatment of tachycardias. Electrically induced premature beats were used in an effort to elucidate the origin and mechanism of these tachycardias. The first chapter is on classification and diagnosis of tachy cardias with special emphasis on our current knowledge of the differential diagnosis between supraventricular tachycardias with aberrant conduction and ventricular tachycardias. This is followed by theoretical considerations on tachycardias especially in relation to the methods used in this study. After an outline of these methods the results of our studies in patients with atrial flutter, A-V junc tional tachycardias and tachycardias related to the pre-excitation syndrome are reported. A discussion on the value of electrical stimulation for the treatment of tachycardias is followed by a summary of our results.
“Variants of Ventricular Preexcitation: Recognition and Treatment provides a unique opportunity for general cardiologists and electrophysiologists to find in one text the intricacies of recognizing and treating a group of disorders that has intrigued physicians for more than 100 years.” --from the Foreword by Mark E. Josephson, MD, Chief, Cardiovascular Division, Beth Israel Deaconess Medical Center, Boston, USA Drs Sternick and Wellens combine their expertise in the diagnosis and treatment of cardiac arrhythmias to bring you this complete overview of decrementally conducting accessory pathways and their role in cardiac arrhythmias. This is the first book dedicated to these special types of accessory pathways, their recognition and management. By covering the uncommon varieties of ventricular preexcitation, this book supports you in improving patient care by: Helping you to identify decrementally conducting AV fibers- which comprise 3-5 % of all accessory AV pathways Explaining exactly what information can be obtained from the 12-lead ECG Showing how to identify and localize these pathways during an electrophysiologic study Detailing the proper treatment and how to treat these patients By explaining the fundamental pathophysiology as well as the diverse clinical presentation of arrhythmias, Drs Sternick and Wellens demystify the subject of the different variants of decrementally conducting accessory pathways leading to ventricular pre-excitation and their role in cardiac arrhythmias.
The electrocardiogram (ECG) remains the most accessible and inexpensive diagnostic tool to evaluate the patient presenting with symptoms suggestive of acute myocardial ischemia. It plays a crucial role in decision making about the aggressiveness of therapy especially in relation to reperfusion therapy, because such therapy has resulted in a considerable reduction in mortality from acute myocardial infarction. Several factors play a role in the amount of myocardial tissue that can be salvaged by reperfusion therapy, such as the time interval between onset of coronary occlusion and reperfusion, site and size of the jeopardized area, type of reperfusion attempt (thrombolytic agent or an intracoronary catheter intervention), presence or absence of risk factors for thrombolytic agents, etc. Most important in decision making on reperfusion therapy and the type of intervention is to look for markers indicating a higher mortality rate from myocardial infarction. The ECG is a reliable, inexpensive, non-invasive instrument to obtain that information. Recently it has become clear that both in anterior and inferior myocardial infarction, the ECG frequently allows not only to identify the infarct related coronary artery, but also the site of occlusion in that artery and therefore the size of the jeopardized area. Obviously, the more proximal the occlusion, the larger the area at risk and the more aggressive the reperfusion attempt.
Hein and Moon take up a serious problem of contemporary global governance: what can be done when international trade rules prevent the realization of basic human rights? Starting in the 1990s, intellectual property obligations in trade agreements required many developing countries to begin granting medicines patents, which often rendered lifesaving drugs unaffordable. At stake was the question of what priority would be given to health-particularly of some of the world’s poorest people-and what priority to economic interests, particularly those of the most powerful states and firms. This book recounts the remarkable story of the access to medicines movement. The authors offer an explanation for how the informal, but powerful norm that every person should have access to essential medicines emerged after a decade of heated political contestation and against long odds. They also explore the stability and scope of the norm. Finally, the book examines the limitations of informal norms for protecting human rights, and when renewed focus on changing formal norms is warranted.
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