1 Electrophysiological Mechanisms of Cardiac Arrhythmias.- 2 Energy Sources for Ablation and Their Mechanisms of Action.- 3 Setup im EPU-Labor.- 4 Puncture Techniques in the Catheterization Lab.- 5 Orientation in Fluoroscopy.- 6 Functionality of 3D Mapping Systems.- 7 Supraventricular Tachycardias.- 8 Diagnosis and Therapy of AV Nodal Reentrant Tachycardia.- 9 Focal Atrial Tachycardia.- 10 AVRT.- 11 Typical Atrial Flutter.- 12 Atypical Atrial Flutter.- 13 Atrial Fibrillation - Radiofrequency Ablation (Pulmonary Vein Isolation).- 14 Atrial Fibrillation - Cryoablation.- 15 Localization of Ventricular Arrhythmias in the 12-Lead ECG.- 16 Idiopathic Ventricular Extrasystole.- 17 VT in Ischemic Cardiomyopathy.- 18 VT in Non-Ischemic Cardiomyopathy.- 19 Management of Complications.- 20 Measures for Low-Dose Fluoroscopy.