Even mild mitral regurgitation is associated with incident atrial fibrillation in the general population

心房颤动 医学 四分位间距 心脏病学 内科学 二尖瓣反流 人口 置信区间 前瞻性队列研究 二尖瓣 环境卫生
作者
Marat Yafasov,Flemming Javier Olsen,Ali Shabib,Kristoffer Grundtvig Skaarup,Mats Christian Højbjerg Lassen,Niklas Dyrby Johansen,Magnus T. Jensen,Gorm Boje Jensen,Peter Schnohr,Rasmus Møgelvang,Tor Biering‐Sørensen
出处
期刊:European Journal of Echocardiography [Oxford University Press]
卷期号:25 (5): 579-586 被引量:2
标识
DOI:10.1093/ehjci/jead337
摘要

Abstract Aims Mitral regurgitation (MR) can be difficult to quantify. We sought to investigate whether the MR jet area to left atrial (LA) area ratio (MR/LA ratio) method for quantifying MRs can be used to predict incident atrial fibrillation (AF) in the general population. Methods and results The study included 4466 participants from the 5th Copenhagen City Heart Study, a prospective general population study, who underwent transthoracic echocardiography. MR jet area was measured and indexed to LA area. The endpoint was incident AF. MR was quantified in 4042 participants (mean age: 57 years, 43% men). Of these, 198 (4.9%) developed AF during a median follow-up period of 5.3 years (interquartile range: 4.4–6.1 years). MR was present in 1938 participants (48%) including 1593 (39%) trace/mild MRs (MR/LA ratio ≤ 20% and ≤4 cm2). In unadjusted analysis, MR/LA ratio was associated with incident AF [HR: 1.06 (1.00–1.13), P = 0.042 per 5% increase] but not after adjusting for CHARGE-AF score. However, the association was modified by age (P for interaction = 0.034), such that MR/LA ratio was associated with AF only in participants ≤ 73 years. In these participants, MR/LA ratio ‘was’ independently associated with AF after adjusting for CHARGE-AF score [HR: 1.14 (1.06–1.24), P = 0.001, per 5% increase]. This finding persisted when restricting the analysis to participants without moderate or severe MR and normal LA size [HR: 1.35 (1.09–1.68), P = 0.005, per 5% increase]. Conclusion MR, including even trace regurgitations quantified by MR/LA ratio, is independently associated with incident AF in individuals ≤ 73 years of age.
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