Abstract 18887: The Clinical Implication of New In-hospital Onset Atrial Fibrillation in Patients With Acute Decompensated Heart Failure

Background: In-hospital atrial fibrillation (AF) often occurs at the acute worsening phase of heart failure (HF). In-hospital AF terminates spontaneously following the recovery of HF in some cases, but administration of anti-arrhythmic agents or electrical defibrillation is performed in other cases. The aim of this study was to investigate the impact of the in-hospital onset AF on the clinical outcome in patients with acute HF. Methods: Study subjects included 551 new onset acute HF patients referred to our hospital (85 males, 66±14 years old) and classified into 4 groups: group 1 (n = 243), no AF was detected during hospital stay and after discharge from the hospital; group 2 (n = 35), new onset AF was detected during hospital stay without recurrence of AF after discharge; group 3 (n = 47), AF occurrence only after the discharge without AF detection during hospital stay; and group 4 (n = 226), the clinical history of AF was confirmed only before admission. The cardiac death after discharge was compared a...