Basic Concepts, Indications, and Consequences of Cardiac Pacing: Indications for the use of implanted arrhythmia devices: comments on the 1991 ACC/AHA Task Force Report; Cardiac pacing for Carotid Sinus Syndrome and Vasovagal Syncope; Sick sinus syndrome; Natural history of paced and unpaced patients; Pacemaker syndrome; Clinical, hemodynamic, and neurohumoral features; Noninvasive hemodynamic evaluation of pacing; Effect of drugs on pacemaker function; Lead extraction; Techniques and indications; Impact of New Technology:DDDR timing cycles: lower rate; DDDR timing cycles: upper rate; AV delay optimization in DDD and DDDR pacing; Technological advances in sensors; Clinical applications; Sensor combinations: which, how and why?; Do we really need multiple sensors for optimal rate-adaptive pacing?; Do we really need fully automatic pacemakers?;Selection of Pacing System and Follow-up: Considerations of the selection of rate-adaptive single lead (AAIR) pacing; Single-lead VDD pacing; Adverse effects and limitations rate-adaptive pacing; The follow-up of dual chamber rate-adaptive pacemakers; The importance of automatic switching of pacing mode; Optimal pacing mode in specific situations: coronary artey disease, cardiomyopathy, and cardiac transplantation