The “Philosophy” of the Diagnostic Pacemaker.- Comparison of Different Pacemakers with Holter Functions.- Clinical Evaluation of a Diagnostic Pulse Generator (DPG) with Special Analysis Functions in Pacemaker Patient Follow-up.- Clinical Importance of the Analysis Functions of a Multiprogrammable Pacemaker.- Determination of the Endocardial Signal Amplitude in Single-Chamber Demand Pacemakers: Comparison of two Measurement Methods.- Progress in Holter Monitoring Towards an Implantable System.- Memory Technology and Implantable Holter Systems.- Value and Limitations of the Holter Functions of a Single Chamber Diagnostic Pacemaker.- Pacemaker Holter ECG: Value and Limitations in Follow-up of Pacemaker Patients.- Prevention and Improved Detection of Pacemaker Dysfunctions.- Physiological Pacing and Biological Adjustment.- Rate Responsive Pacing — Initial Experience with the QT (TX/Quintech) and Biorate Pacemakers.- Problems with the Slope Adjustment and Rate Adaption in Rate Responsive Pacemakers: Oscillation Phenomena and Sudden Rate Jumps.- Comparison of VVI and QT-Related Rate Adaptive Pacing — Pulmonary Artery Pressure, Pulmonary Capillary Pressure, Heart Rate and Cardiac Output.- Clinical Experience with the Respiratory Rate Responsive Pacemaker.- Respiration Dependent Pacemakers.- Results with the SO2-Controlled Pacemaker.- Preliminary Clinical Results with a New Software-Controlled DDD Pacemaker.- DDI Mode: A New Stimulation Mode in the Therapy of Pacesetting Disorders.- A New Generation of Dual Chamber Pacemakers with Automatic In-Built Rhythm Recognition Capabilities.- Left Ventricular Function During VVI and DVI Pacing at Different Rates as Assessed by M-Mode and Two-Dimensional Echocardiography, Gated Single Photon Emission Computerized Tomography (GASPECT) and Thermodilution.- New Aspects on the Pathogenesis of Ischemia-Induced Ventricular Arrhythmias.- Pre-Implantation Evaluation of Candidates for an Antitachycardia Pacemaker.- Subthreshold Burst Pacing.- Tachycardia Recognition by Implantable Devices.- The Use of the Ventricular Paced Evoked Response in Antitachycardia Pacemaker Design.- Detections and Discrimination of Supraventricular Tachycardia from Sinus Tachycardia of Overlapping Cycle Lengths.- A Description of Reliable Pacemaker Holter Functions in the Future Antitachycardia Pacemaker.- Antitachycardia Pacemakers — an Overview.- Value and Limitations of the DPG-1 Pacemaker Anti-Arrthythmic Functions.- Use of Flywheel, Automatic Underdrive and Dynamic Overdrive in Atrial Pacers.- Description and Efficacy of PASAR Algorithms.- Clinical Results with the Tachylog P43.- The Antitachycardia Capabilities of Symbios.- Clinical Long-Term Experiences with High Rate Antitachycardia Stimulation (Cybertach 60).- Endo-Epicardial Cardioversion-Defibrillation for Termination of Drug-Refractory Ventricular Tachyarrhythmias.- Single-Beat Stimulation and Train of Stimuli Method for Prevention of Reentrant Tachycardia.- Hemodynamic and Antiectopic Effects of Long-term Dynamic Overdrive Pacing in Implanted VVI Pacemakers.- Arrhythmias induced by Antitachycardial Pacing.- The Surgical Approach to Tachycardias.- Author Index.