Cryoablation of distal right atrial appendage tachycardia focus using intracardiac echocardiography and no fluoroscopy: Improved outcomes with modern technology

Does cryomapping warrant a safety in the subsequent therapeutic cryoablation?

“…Cryoablation has been introduced as an alternative to radiofrequency ablation, and that with the use of balloon technology, that is, cryoballoon ablation, is now widely used to accomplish pulmonary vein isolation for treatment of paroxysmal form atrial fibrillation . Besides cryoballoon ablation, catheter‐based cryoablation has been also applied for treating AVNRT, AV reciprocating tachycardia via the accessory pathway, and atrial tachycardia . One of the important therapeutic characteristics of cryoablation is an ability of creation of reversible impairment to the myocardial tissue by applying a cryothermal energy at a halfway low temperature (−30°C) (cryomapping).…”

“…6 Besides cryoballoon ablation, catheter-based cryoablation has been also applied for treating AVNRT, 7 AV reciprocating tachycardia via the accessory pathway, 8 and atrial tachycardia. 9 One of the important therapeutic characteristics of cryoablation is an ability of creation of reversible impairment to the myocardial tissue by applying a cryothermal energy at a halfway low temperature (−30°C) (cryomapping). Even with the application of rapid cooling to −75°C or less, the freezing wavefront advances slowly, thus allowing for time to discontinue freezing and avoiding the creation of permanent injury.…”