Videos Videos relating to the text and online cases can be accessed by clicking on the links below: Chapter 4: Catheter Cryoablation for Atrioventricular Nodal Reentrant Tachycardia 4.1. Treatment of atrioventricular nodal reentrant tachycardia by catheter cryoablation Chapter 5: Cryoballoon Pulmonary Vein Isolation for Atrial Fibrillation 5.1. Double Arctic Circler simultaneously controlled by two consoles 5.2. Treatment of permanent junctional reciprocating tachycardia by catheter cryoablation 5.3. Freezing of the left atrial appendage in order to ablate the otherwise intractable ridge 5.4. Combination of proven occlusion and withdrawal of Achieve catheter 5.5. Polar icecap inside of the right upper pulmonary vein properly occluded by a 23 mm balloon 5.6. Phrenic nerve pacing (superior vena cava) – upside-down technique of phrenic nerve pacing 5.7. Frozen lung tissue – selective angiogram of left upper pulmonary vein 5.8. Frozen lung tissue – occlusion of left upper pulmonary vein Case 5.2. Discrepancy between the movement of the right diaphragm with pacing and inability to move with arbitrary breathing. Chapter 6: Prevention of Phrenic Nerve Palsy during Cryoballoon Ablation for Atrial Fibrillation 6.1. Identifying the pulmonary vein ostium during contrast injection Chapter 7: Linear Isthmus Ablation for Atrial Flutter: Catheter Cryoablation v. Radiofrequency 7.1. Pulmonary vein isolation by catheter cryoablation Chapter 8: Catheter Cryoablation for the Treatment of Accessory Pathways 8.1. Treatment of atrial flutter by catheter cryoablation Chapter 10: Catheter Cryoablation for the Treatment of Miscellaneous Arrhythmias 10.1. Atrioventricular nodal ablation by catheter cryoablation Online Cases Case 5.2. Pulmonary vein tachycardia