PO-05-009 SAFETY OF MAGNETIC RESONANCE IMAGING IN PATIENTS WITH SURGICALLY IMPLANTED PERMANENT EPICARDIAL LEADS

Abstract

Magnetic resonance imaging (MRI) safety in patients with an epicardial cardiac implantable electronic device (CIED) is uncertain. To assess the safety and adverse effects of MRI in patients who had surgically implanted epicardial CIED. Patients with surgically implanted CIEDs who underwent MRI between January 2008 and January 2021 were prospectively studied in two clinical centers. All patients underwent close cardiac monitoring through MRI procedures. Outcomes were compared between the epicardial CIED group and matched transvenous CIED group. Twenty-nine consecutive patients with epicardial CIED (male 41.4%, mean age of 43 years) underwent 52 MRIs in the 57 anatomic regions. Sixteen patients had pacemakers, 9 had cardiac defibrillators or cardiac resynchronization therapy defibrillators, and 4 had no device generators. There were no significant adverse events in epicardial or transvenous CIED groups. The battery life, pacing, sensing thresholds, lead impedance and cardiac biomarkers were not significantly changed, except one patient had a transient decrease in atrial lead sensing function. MRI of CIEDs with epicardially implanted leads does not represent a greater risk than the transvenous CIEDs.