Acquired Long Qt Syndrome

In recent years there has been considerable interest in the diagnosis and understanding of ventricular repolarisation, particularly the QT interval prolongation and abnormal T and T/U wave morphology associated with torsades de pointes. Advances in ion channel cloning have greatly improved our understanding of the role of ionic channels in mediating cardiac repolarisation. Unfortunately, it is increasingly recognised that a number of drugs, both those associated with altering repolarisation, and others for non-cardiac conditions can increase the propensity for polymorphic ventricular tachycardia, syncope and even ventricular fibrillation and sudden death. In this volume, arrhythmia specialists from St. George’s Hospital Medical School, London discuss the mechanisms behind QT prolongation and torsades de pointes. They focus particularly on the risk of individual cardiac and non-cardiac drugs in provoking long QT syndrome, providing a comprehensive review which will be useful for all electrophysiologists treating polymorphic ventricular tachycardias, and will expose important regulatory issues for pharmaceutical authorities and for the wider medical community.

Until recently, the cellular basis for sudden death, the BrugadaSyndrome, has largely remained an unknown to modernarrhythmologists and cardiologists, particularly in the absence ofany structural heart disease. Detailed observations of age-groups,especially the young, families and populations where sudden deathfrequently occurs, and improved understanding of its contributoryfactors and mechanisms are, however, showing the way forward. This addition to the Clinical Approaches to Tachyarrhythmias(CATA) Series, written by the investigators who discovered andprobed the Brugada Syndrome, discusses the history, etiology,pathology and clinical manifestations of sudden death. Fromdiagnosis, prognosis, to therapeutic approaches using the latest incathater ablation techniques, electrophysiological surgery, andgenetic appraisal, the work is a testimony to the author'sinvestigation. Using clinical cases in Thailand and Laos, theyfurther unravel the syndrome's molecular mechanisms, studyingrelated syndromes, such as the long-QT syndrome, infant death, andarryhthmogenic right ventricular cardiomyopathy. By being informed of the electrophysiological abnormalities thatcontribute to familial and genetic diseases, physicians,cardiologists and all those who care for patients with cardiacarrhythmias will be better able to identify and treat patients inwhom the Brugada Syndrome may strike next.

A significantly expanded third edition, this book provides a comprehensive and concise overview of cardiac arrhythmias and their ECG/telemetry manifestations, including the principles of cardiac electrophysiology, current concepts of pharmacology, clinical features, diagnoses, and state-of-the-art treatments. Additionally, the book emphasizes decision-making strategies in approaching each individual patient and the application of technical innovations in specific clinical situations. Organized into eight parts, beginning chapters introduce the concepts and principles of cardiac electrophysiology, unique rhythms, and ECG waves/signs. These chapters are designed to integrate emerging knowledge in basic science and clinical medicine. Subsequent chapters focus on the diagnosis of a variety of cardiac arrhythmias using non-invasive methodology. Throughout the book, chapters continue to analyze pharmacological and other approaches to therapy of specific arrhythmias, including supraventricular tachycardias, atrial fibrillation and flutter, ventricular arrhythmias, and bradyarrhythmias. Finally, the book closes with coverage on inherited cardiac arrhythmia syndromes including the long, short QT, and J-wave syndromes, catecholaminergic polymorphic ventricular tachycardia, and arrhythmogenic right ventricular cardiomyopathy. The third edition of Management of Cardiac Arrhythmias, is an essential resource for physicians, residents, fellows, and medical students in cardiology, cardiac surgery, vascular surgery, cardiac electrophysiology, and cardiac radiology.

To most cardiologists, the long QT syndrome is a relatively rare congenital and familial syndrome that affects children or young adults. However, in addition to congenital LQTS there is a series of acquired forms of the syndrome, usually resulting from exposure to drugs that extend the duration the QT interval. This prolongation may be the primary pharmacodynamic action of the drug, however a plethora of other drugs, including some types of antibiotic, antipsychotics, antidepressants, antimalarials and antihistamines may provoke QT interval prolongation. The aim of the Clinical Approaches to Tachyarryhthmias series is to update the physician, cardiologist, and all those responsible for the the care of patients with cardiac arrhythmias. In this volume, Dr. Yap and Dr. Camm expose the data implicating a large number of drugs as potential QT prolongators.

This book provides a unique contemporary and succinct distillation of the current status of recently delineated electrical diseases of the heart, emphasizing their common and diverse clinical features. The latest developments in the field of experimental and clinical cardiac electrophysiology, genetics, pharmacology and interventional therapies of various clinical arrhythmogenic entities are featured and discussed in terms of recent advances in basic and clinical science. The book is divided into seven major parts. Each part consists of chapters (total of 64) dealing with related topics.

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.

This latest book in the Clinical Cases in Cardiology series presents a variety of commonly and rarely encountered cases associated with ​cardio-oncology. It explores the history of the discipline and each case described features concise practically orientated information on how to appropriately carry out physical examinations and utilize diagnostic tests including electrocardiography and monoclonal antibodies. Practically focused guidance is also provided on how to apply therapeutic techniques and the latest management strategies appropriately. Clinical Cases in Cardio-Oncology provides a concise practically applicable guide of how to diagnose and treat a range of conditions associated with ​cardio-oncology, making it a critical addition to the literature on the topic and a valuable resource for all medical practitioners who encounter these patients in their day-to-day practice.

Significantly updated with the latest developments in diagnosis and treatment recommendations, Ferri’s Clinical Advisor 2020 features the popular "5 books in 1" format to organize vast amounts of information in a clinically relevant, user-friendly manner. This efficient, intuitive format provides quick access to answers on 1,000 common medical conditions, including diseases and disorders, differential diagnoses, and laboratory tests – all reviewed by experts in key clinical fields. Updated algorithms, along with hundreds of new figures, tables, and boxes, ensure that you stay current with today’s medical practice. Contains significant updates throughout, covering all aspects of current diagnosis and treatment. Features 27 all-new topics including chronic traumatic encephalopathy, medical marijuana, acute respiratory failure, gallbladder carcinoma, shift work disorder, radial tunnel syndrome, fertility preservation in women, fallopian tube cancer, primary chest wall cancer, large-bowel obstruction, inguinal hernia, and bundle branch block, among others. Includes a new appendix covering Physician Quality Reporting System (PQRS) Measures. Provides current ICD-10 insurance billing codes to help expedite insurance reimbursements. Patient Teaching Guides for many of the diseases and disorders are included, most available in both English and Spanish versions, which can be downloaded and printed for patients.