Multi-center Complex Atrial Tachycardia High-Resolution Mapping Registry (MATH)

Multi-center Complex Atrial Tachycardia High-Resolution Mapping Registry (MATH)

This study is an observational study without any hypothesis testing. It intended to observe the clinical application of electrophysiological mapping and catheter ablation of atrial tachycardia post atrial fibrillation ablation or cardiac surgery guided with Rhythmia System.

Inclusion Criteria:

1. Subject with atrial tachycardia (including atrial flutter) post atrial fibrillation ablation or cardiac surgery, which occurred at least 90 days prior to enrollment;
2. Subject is suitable for Rhythmia system and Orion catheter according to relevant clinical guidelines and products instruction for use, per investigator's discretion
3. Subject is age 18 or above;
4. Subject or his/ her legal representive understands and is willing to provide the Informed Consent Form (ICF) and participate in this trail.

Exclusion Criteria:

1. Subject with atrial fibrillation only;
2. Subject is enrolled in any other concurrent study that might interfere with this study;
3. Women of childbearing potential who are or might be pregnant at the time of this study