P894Real-world observational data confirm the efficacy of atrial antitachycardia pacing in terminating slow and regular atrial tachyarrhythmias in patients wearing implantable cardiac electronic devices. (19th March 2018) - Boriani, G; Iacopino, S; De Rosa, F; Facchin, D; Infusino, T; Biffi, M; Capucci, A; Pisano', E; Zanotto, G; Tarricone, D; Marras, E; Zaca', V; et al.