Assert-IQ Implantable Cardiac Monitor (ICM) Post Market Study

Inclusion Criteria:

Patients must meet ALL study inclusion criteria to participate in the study.

1. Have an approved indication AND are scheduled to receive an Assert-IQTM ICM deviceprior to enrollment in the study.

2. Diagnosed with symptomatic, drug-refractory paroxysmal or persistent AF prior toenrollment in the study and scheduled to undergo a first-time atrial fibrillationablation.

3. Have a cellular phone or the ability or willing to use a mobile transmitter that iscompatible with the myMerlin™ App and able to communicate with the Assert-IQTM ICMdevice. If a subject doesn't have a cell phone or loses their cell phone, then thesite can provide a mobile transmitter to the subject. The study will not providecell phones.

4. Are 18 years of age or older, or of legal age to give informed consent specific tostate and national law.

5. Have the ability to provide informed consent for study participation and be willingand able to comply with the prescribed follow-up tests and schedule of evaluations.

Exclusion Criteria:

If ANY study exclusion criteria are met, the patient is excluded from the study and cannot be enrolled (recruitment failure).

1. Subject is currently participating in another clinical investigation that couldconfound the results of this study, without documented pre-approval from Abbott.

2. Subject is implanted with a cardiac implantable electronic device (CIED) with pacingcapability.

3. Have a life expectancy of less than 1 year due to any condition.