PMID- 32563642 OWN - NLM STAT- MEDLINE DCOM- 20210721 LR - 20211119 IS - 1876-7591 (Electronic) IS - 1876-7591 (Linking) VI - 13 IP - 8 DP - 2020 Aug TI - Left Atrial Late Gadolinium Enhancement is Associated With Incident Atrial Fibrillation as Detected by Continuous Monitoring With Implantable Loop Recorders. PG - 1690-1700 LID - S1936-878X(20)30338-7 [pii] LID - 10.1016/j.jcmg.2020.03.024 [doi] AB - OBJECTIVES: The authors hypothesized that left atrial (LA) fibrosis was associated with incident atrial fibrillation (AF) as detected by continuous long-term monitoring in an at-risk population. BACKGROUND: LA late gadolinium enhancement (LGE) measured with cardiac magnetic resonance is emerging as a marker of atrial fibrosis and has been associated with worse outcomes in AF ablation procedures; however, the prognostic value of LA LGE for incident AF remains unknown. METHODS: Cardiac magnetic resonance, including measurement of left ventricular and LA volumes and function, as well as left ventricular extracellular volume fraction and LA LGE, was acquired in 68 patients aged at least 70 years with risk factors for stroke. All included patients received an implantable loop recorder and were continuously monitored for previously unknown AF. Incident AF was adjudicated by senior cardiologists. RESULTS: Patients were monitored for AF with an implantable loop recorder during a median of 41 (interquartile range: 7) months. AF episodes lasting >/=6 min were detected in 32 patients (47%), and 16 patients (24%) experienced AF episodes lasting >/=5.5 h. In Cox regression analyses adjusted for sex, age, and comorbidities, we found that LA volumes and function and LA LGE were independently associated with incident AF. For LA LGE, the hazard ratios for time to AF episodes lasting >/=6 min and >/=5.5 h were 1.40 (95% CI: 1.03 to 1.89) per 10 cm(2) increase (p = 0.03) and 1.63 (95% CI: 1.11 to 2.40) per 10 cm(2) increase (p = 0.01), respectively. LA LGE was significantly associated with high burden of AF. The addition of LA LGE to a multivariable risk prediction model for incident AF significantly increased the predictive value. CONCLUSIONS: Extent of LA fibrosis measured by LA LGE was significantly associated with incident AF detected by implantable loop recorder. (Atrial Fibrillation Detected by Continuous ECG Monitoring [LOOP]; NCT02036450). CI - Copyright (c) 2020 American College of Cardiology Foundation. Published by Elsevier Inc. All rights reserved. FAU - Bertelsen, Litten AU - Bertelsen L AD - Department of Cardiology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark. Electronic address: littenbertelsen@gmail.com. FAU - Diederichsen, Soren Zoga AU - Diederichsen SZ AD - Department of Cardiology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark. FAU - Haugan, Ketil Jorgen AU - Haugan KJ AD - Department of Cardiology, Sjaelland University Hospital Roskilde, Roskilde, Denmark. FAU - Brandes, Axel AU - Brandes A AD - Department of Cardiology, Odense University Hospital, Odense, Denmark; Department of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark. FAU - Graff, Claus AU - Graff C AD - Department of Health Science and Technology, Aalborg University, Aalborg, Denmark. FAU - Krieger, Derk AU - Krieger D AD - University Hospital Zurich, University of Zurich, Switzerland; Stroke Unit, Mediclinic City Hospital, Dubai, UAE. FAU - Kronborg, Christian AU - Kronborg C AD - Department of Business and Economics, University of Southern Denmark, Odense, Denmark. FAU - Kober, Lars AU - Kober L AD - Department of Cardiology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark; Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark. FAU - Peters, Dana C AU - Peters DC AD - Department of Radiology and Biomedical Imaging, Yale School of Medicine, New Haven, Connecticut. FAU - Olesen, Morten Salling AU - Olesen MS AD - Laboratory for Molecular Cardiology, Department of Cardiology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark; Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark. FAU - Hojberg, Soren AU - Hojberg S AD - Department of Cardiology, Bispebjerg Hospital, Copenhagen University Hospital, Copenhagen, Denmark. FAU - Vejlstrup, Niels AU - Vejlstrup N AD - Department of Cardiology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark. FAU - Svendsen, Jesper Hastrup AU - Svendsen JH AD - Department of Cardiology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark; Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark; Laboratory for Molecular Cardiology, Department of Cardiology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark. LA - eng SI - ClinicalTrials.gov/NCT02036450 PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200617 PL - United States TA - JACC Cardiovasc Imaging JT - JACC. Cardiovascular imaging JID - 101467978 RN - 0 (Contrast Media) RN - AU0V1LM3JT (Gadolinium) SB - IM CIN - JACC Cardiovasc Imaging. 2020 Aug;13(8):1701-1703. PMID: 32682723 EIN - JACC Cardiovasc Imaging. 2021 Feb;14(2):523-524. PMID: 33541533 CIN - JACC Cardiovasc Imaging. 2021 Mar;14(3):704-705. PMID: 33663771 CIN - JACC Cardiovasc Imaging. 2021 Mar;14(3):704. PMID: 33663772 MH - *Atrial Fibrillation/surgery MH - Catheter Ablation MH - Contrast Media MH - Fibrosis MH - Gadolinium MH - Heart Atria/pathology MH - Humans MH - Magnetic Resonance Imaging MH - Predictive Value of Tests OTO - NOTNLM OT - atrial fibrillation OT - cardiovascular magnetic resonance imaging OT - fibrosis OT - late gadolinium enhancement OT - left atrium EDAT- 2020/06/22 06:00 MHDA- 2021/07/22 06:00 CRDT- 2020/06/22 06:00 PHST- 2019/11/25 00:00 [received] PHST- 2020/03/12 00:00 [revised] PHST- 2020/03/20 00:00 [accepted] PHST- 2020/06/22 06:00 [pubmed] PHST- 2021/07/22 06:00 [medline] PHST- 2020/06/22 06:00 [entrez] AID - S1936-878X(20)30338-7 [pii] AID - 10.1016/j.jcmg.2020.03.024 [doi] PST - ppublish SO - JACC Cardiovasc Imaging. 2020 Aug;13(8):1690-1700. doi: 10.1016/j.jcmg.2020.03.024. Epub 2020 Jun 17.