PMID- 30633768 OWN - NLM STAT- MEDLINE DCOM- 20191118 LR - 20200309 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 14 IP - 1 DP - 2019 TI - Outcomes of cardiac resynchronization therapy in patients with atrial fibrillation accompanied by slow ventricular response. PG - e0210603 LID - 10.1371/journal.pone.0210603 [doi] LID - e0210603 AB - It remains unclear as to whether cardiac resynchronization therapy (CRT) would be as effective in patients with atrial fibrillation (AF) accompanied by slow ventricular response (AF-SVR, < 60 beats/min) as in those with sinus rhythm (SR). Echocardiographic reverse remodeling was compared between AF-SVR patients (n = 17) and those with SR (n = 88) at six months and 12 months after CRT treatment. We also evaluated the changes in QRS duration; New York Heart Association (NYHA) functional class; and long-term composite clinical outcomes including cardiac death, heart transplantation, and heart failure (HF)-related hospitalization. Left ventricular pacing sites and biventricular pacing percentages were not significantly different between the AF-SVR and SR groups. However, heart rate increase after CRT was significantly greater in the AF-SVR group than in the SR group (P < 0.001). At six and 12 months postoperation, both groups showed a comparable improvement in NYHA class; QRS narrowing; and echocardiographic variables including left ventricular end-systolic volume, left ventricular ejection fraction, and left atrial volume index. Over the median follow-up duration of 1.6 (interquartile range: 0.8-2.2) years, no significant between-group differences were observed regarding the rates of long-term composite clinical events (35% versus 24%; hazard ratio: 1.71; 95% confidence interval: 0.23-12.48; P = 0.60). CRT implantation provided comparable beneficial effects for patients with AF-SVR as compared with those with SR, by correcting electrical dyssynchrony and increasing biventricular pacing rate, in terms of QRS narrowing, symptom improvement, ventricular reverse remodeling, and long-term clinical outcomes. FAU - Hwang, Jin Kyung AU - Hwang JK AD - Division of Cardiology, Department of Medicine, Veterans Health Service Medical Center, Seoul, Korea. FAU - Gwag, Hye Bin AU - Gwag HB AD - Division of Cardiology, Department of Medicine, Samsung Medical Center, Sunkyunkwan University School of Medicine, Seoul, Korea. FAU - Park, Kyoung-Min AU - Park KM AD - Division of Cardiology, Department of Medicine, Samsung Medical Center, Sunkyunkwan University School of Medicine, Seoul, Korea. FAU - On, Young Keun AU - On YK AD - Division of Cardiology, Department of Medicine, Samsung Medical Center, Sunkyunkwan University School of Medicine, Seoul, Korea. FAU - Kim, June Soo AU - Kim JS AD - Division of Cardiology, Department of Medicine, Samsung Medical Center, Sunkyunkwan University School of Medicine, Seoul, Korea. FAU - Park, Seung-Jung AU - Park SJ AUID- ORCID: 0000-0003-3288-0594 AD - Division of Cardiology, Department of Medicine, Samsung Medical Center, Sunkyunkwan University School of Medicine, Seoul, Korea. LA - eng PT - Journal Article DEP - 20190111 PL - United States TA - PLoS One JT - PloS one JID - 101285081 SB - IM MH - Aged MH - Atrial Fibrillation/physiopathology/*therapy MH - Cardiac Resynchronization Therapy/*methods MH - Echocardiography MH - Electrocardiography MH - Female MH - Heart Failure/physiopathology/*therapy MH - Heart Ventricles/physiopathology MH - Humans MH - Male MH - Middle Aged MH - Treatment Outcome MH - Ventricular Dysfunction/physiopathology/*therapy MH - Ventricular Remodeling PMC - PMC6329507 COIS- The authors have declared that no competing interests exist. EDAT- 2019/01/12 06:00 MHDA- 2019/11/19 06:00 PMCR- 2019/01/11 CRDT- 2019/01/12 06:00 PHST- 2018/09/18 00:00 [received] PHST- 2018/12/30 00:00 [accepted] PHST- 2019/01/12 06:00 [entrez] PHST- 2019/01/12 06:00 [pubmed] PHST- 2019/11/19 06:00 [medline] PHST- 2019/01/11 00:00 [pmc-release] AID - PONE-D-18-27162 [pii] AID - 10.1371/journal.pone.0210603 [doi] PST - epublish SO - PLoS One. 2019 Jan 11;14(1):e0210603. doi: 10.1371/journal.pone.0210603. eCollection 2019.