Intermittent Mode Reversion to VOO of a Dual Chamber Pacemaker Model

Abstract

This report describes an asymptomatic patient with a DDDR pacemaker system (Inos Cls, Biotronik) that showed intermittent mode reversion to VOO and sometimes to VVI without a detectable source of electromagnetic interference and oversensing. Patients with this Biotronik model should be carefully assessed along with a surface ECG before placing the programming head.