iCLAS™ Cryoablation System Post-Market Clinical Follow-up (PMCF) Study

Inclusion Criteria: * Subject is ≥ 18 years of age * Planned ablation procedure according to the indication for use of the commercially available Adagio iCLAS™ Cryoablation System * Subject willing to comply with study requirements and give informed consent. Exclusion Criteria: * In the opinion of the Investigator, any known contraindication to an atrial ablation procedure with the Adagio iCLAS™ Cryoablation System as indicated in the device Instructions For Use (IFU). * Subject is enrolled in a study that has not been approved for concurrent enrollment by the sponsor. * Any other condition that, in the judgment of the investigator, makes the patient a poor candidate for this procedure, the study or compliance with the protocol (includes vulnerable patient population, mental illness, addictive disease, terminal illness with a life expectancy of less than one year, extensive travel away from the research center)