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The history of electric cardiac stimulation is long and fascinating. The grow ing clinical importance has been recognized and renewed as Zoll in 1952 described a successful resusciation in cardiac standstill by external stimula tion. Meanwhile, patients with disorders of cardiac rhythm have been treated all over the world for about 15 years. Recently the technical refinements of intracardiac stimulation in combination with a subtile analysis of endocavi tary electrocardiograms improv~d the understanding of human intracardiac conduction. These new procedures include the possibility to study the initia tion and termination of tachycardias. - The pertinent interest in these devel opments and the intention to learn more about the basic fundamentals of excitability and conduction under both normal and pathological circum stances were reasons to organize an international symposium on that topic. The papers contained in this book were presented at this meeting on diagnos tic and therapeutical tools of cardiac pacing, held at Munich on November 7 and 8, 1975, sponsored by the first Medical Clinic of the University of Munich and generously supported by Medtronic. Especially focused are the investigations on sinus node function, disturbances of av-conduction and electrophysiology of supraventricular and ventricular tachycardias. The content of the book that is emerging from the symposium were created by the authors. I wish to thank them for teaching us about the recent advances in cardiac tissue stimulation by electricity. Much credit is due Priv. Doz. Dr. B. Uideritz, who organized the symposium and published these proceedings.
Sommario
I. Sinus Node.- The Sinoatrial Node Function.- Clinical Aspects of the Sick Sinus Syndrome.- The Significance of the Sinus Node Recovery Time in the Sick Sinus Syndrome.- Premature Atrial Stimulation for Evaluation of Sinoatrial Conduction in Man.- Sinus Node Recovery Time and Sinoatrial Conduction Time.- The Influence of Drugs on Sinoatrial Conduction Time in Man.- Evaluation of Suction Electrode Recording.- The Recording of the Human Right Atrial Monophasic Action Potential.- II. Atrioventricular Conduction.- Contributions of Intracardiac Electrography to the Understanding of Normal and Disturbed AV Conduction.- Clinical Significance of AV Conduction Disturbances.- Fascicular Block Patterns - Observations on Differential Diagnosis.- AV Nodal Tachycardias.- Drug Effects on AV Conduction.- Split His.- Atrioventricular (AV) and Ventriculoatrial (VA) Conduction Pattern in Patients with Short P - R Interval and Normal QRS Complex.- The Wolff-Parkinson-White Syndrome.- III. Supraventricular and Ventricular Tachycardias.- An in Vitro Model of Circulating Excitation in the Absence of an Anatomic Obstacle.- Clinical and Electrocardiographic Features of Supraventricular and Ventricular Tachycardias.- Reentry-Mechanism within the His-Purkinje-System in Man During Extrasystolic Stimulation of the Right Ventricle.- Patient Initiated Rapid Atrial Pacing to Manage Supraventricular Tachycardia.- Fundamentals of Orthorhythmic Pacing.- Orthorhythmic Stimulation and Endocardial Detection as a Diagnostic Tool.- The Use of Programmed Rate-Related Premature Stimulation in Managing Tachyarrhythmias.- Future Aspects of Cardiac Pacing.
