Disease/rhythm-related |
Detected atrial tachycardia/fibrillation in patients requiring pace termination, shock, cardioversion, or medication adjustment |
Detected sustained ventricular tachycardia ≥5 beats requiring pace termination, shock, cardioversion, or medication adjustment |
Asystole >3-s pause |
Device function |
Elective replacement indicator or end of life present |
Lead function |
Significant changes in atrial or ventricular lead impedance defined as impedance <200 or >2000 Ω, unstable lead impedance deemed to be clinically actionable, ≥50 % change in lead impedance since last interrogation |
Increase in pacing voltage threshold ≥1 V compared with the previous interrogation |