Management of device-detected atrial high-rate episodes

Area of Science:

• Cardiology
• Electrophysiology
• Medical Devices

Background:

• Atrial tachyarrhythmias are frequent in patients with cardiac implantable electronic devices (CIEDs).
• These arrhythmias are often detected as atrial high-rate episodes (AHREs) by CIEDs.
• Subclinical AHREs, even if brief or asymptomatic, are associated with elevated stroke risk.

Purpose of the Study:

• To investigate the association between subclinical device-detected atrial high-rate episodes (AHREs) and stroke risk.
• To explore the threshold of AHRE duration that may increase stroke risk.
• To evaluate the potential benefit of anticoagulation for subclinical AHREs in stroke risk reduction.

Main Methods:

• Analysis of data from patients with cardiac implantable electronic devices (CIEDs) featuring atrial leads.
• Identification and characterization of atrial high-rate episodes (AHREs) detected by CIEDs.
• Comparison of stroke risk in patients with and without subclinical AHREs, and assessment of anticoagulation impact.

Main Results:

• Subclinical device-detected atrial high-rate episodes (AHREs) are associated with a higher risk of stroke compared to no detected AHREs.
• The stroke risk associated with AHREs is generally lower than that of clinically apparent atrial fibrillation.
• The specific duration of AHREs required to significantly increase stroke risk is not definitively established.

Conclusions:

• Subclinical AHREs detected by CIEDs represent a significant risk factor for stroke.
• Further research is needed to determine the precise duration thresholds for increased stroke risk from AHREs.
• The efficacy of anticoagulation therapy in mitigating stroke risk associated with subclinical AHREs requires further investigation.