Decision to continue long-term anticoagulation is based on stroke risk scores (CHA2DS2-VASc-Score) irrespective of the results of cather ablation.
Many patients receive anticoagulation after ablation although they do not have AF (→ increased bleeding risk).
New techniques for non-invasive long-term heart rhythm monitoring are urgently needed.
Prospective observational study in 100 consecutive patients undergoung implantation of loop recorder (IRL) after catheter ablation of AF.
Daily transmission of ECGs recorderd by the ILR and by an Apple-Watch (observation period: 6 months). Additional recordings triggerd by the patient.
Blinded evaluation of all tracings by a core lab.
Assessment of the diagnostic accuracy of Apple Watch recordings (in comparison to the IRL) with determination of individual AF burden.
Advantages of the Apple-Watch over IRL
Non-invasive technique (IRL: easy implantation but potentially troublesome explantation, no data regarding repeated device implantation).
Life-long monitorning becomes feasible (IRL: battery life app. 3 years).
Can be used used when needed – monitoring can be stopped when needed (IRL: 50% of all AF recurrenecss after ablation are deteced within 3 months after the blanking period – the device
usually remains vor 3 years)
The ECG app creates, records, stores, transfers, and displays a single channel ECG in order to determine the presence of AF or sinus rhythm.
The irregular rhythm notification feature continuously analyzes pulse rate data to identify episodes of irregular heart rhythms suggestive of AF and provides a notification to the
user (→ detenction of asymptomatic AF episodes).