Optimal Sensing in Atrial Tachyarrhythmia's Study

OSAT: Optimal Sensing in Atrial Tachyarrhythmia's Study

The aim of the study is the comparison of two different leads in their capabilities to detect episodes and duration of paroxysmal atrial fibrillation (AF) and atrial tachyarrhythmia (AT), and the rejection of far field sensing of the far field R-wave (FFRW).

The aim of the study is the comparison of two different leads in their capabilities to detect episodes and duration of paroxysmal AF and AT and the rejection of far field sensing of the far field R-wave (FFRW). The study aims to evaluate the accuracy of the detection of atrial tachyarrhythmias (ATAs). An improved detection can potentially increase the accuracy of clinical treatment decisions, based on device derived data.

Inclusion Criteria:

• Patients with class I or II pacing indications for Sick Sinus Syndrome with suspected paroxysmal atrial tachyarrhythmias over the last 6 months
• Signed informed consent
• Age >18 yrs

Exclusion Criteria:

• Severe valvular heart disease (echocardiogram less than 6 months old)
• Angina Pectoris class ≥ III
• Congestive heart failure - NYHA class ≥ III
• Left Ventricular Ejection Fraction < 35% (less than 6 months old)
• Hypertrophic Cardiomyopathy