<unk>  is a potentially life-threatening malfunction of older<unk>  technologies whereby the<unk>  intermittently fires at a rate of nearly 2000 bpm.
Runaway pacemaker syndrome
Pre-excitation syndrome
Pacemaker syndrome
Torsades de pointes
Long QT syndrome
Pacemaker mediated tachycardia
Atrial fibrillation Wolff-Parkinson-White preexcitation syndromes
Siccardi syndrome