RT Journal Article SR Electronic A1 Nierengarten, Mary Beth T1 Presence of IAC Delay is Critical to Selecting Patients for IASP JF MD Conference Express YR 2014 FD SAGE Publications VO 14 IS 21 SP 26 OP 28 DO 10.1177/155989771421016 UL http://mdc.sagepub.com/content/14/21/26.abstract AB In patients with intra-atrial conduction delay to the posterior triangle of Koch, pacing the interatrial septum (IAS) may play a role in preventing permanent or persistent atrial fibrillation (AF). This article presents data from the Electrophysiology-Guided Pacing Site Selection study, a prospective, active-controlled, randomized, multicenter study that assessed the efficacy of atrial pacing at the IAS versus the right atrial appendage to prevent persistent or permanent AF in patients with sinus node disease [Verlato R et al. Circ Arrhythm Electrophysiol 2011].