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Reduced Peak Atrial Systolic Mitral Annular Velocity Predicts the Development of Nonvalvular Atrial Fibrillation
Author(s) -
Choi JinOh,
Han Hyejin,
Cho Soo Jin,
Yang Ji Hyun,
Song Bong Gun,
Lee Sang Yeub,
Kim Jung Hyuk,
Lee SangChol,
On Young Keun,
Kim Jun Soo,
Park Seung Woo
Publication year - 2009
Publication title -
echocardiography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 62
eISSN - 1540-8175
pISSN - 0742-2822
DOI - 10.1111/j.1540-8175.2008.00858.x
Subject(s) - cardiology , atrial fibrillation , medicine , confidence interval , hazard ratio , left atrium
We investigated whether the echocardiographic parameters of the left atrium (LA) can predict the development of nonvalvular atrial fibrillation (AF). Among 14,062 patients ( > 20 years old) who underwent an echocardiographic examination were evaluated, 2,606 patients who underwent follow‐up ECG with an interval of > 6 months were investigated. Newly developed AF was noted in 42 (1.6%) patients with follow‐up duration of 31.8 ± 8.9 months. Cox regression analysis revealed that a higher left atrial volume index (hazard ratio [HR ]= 1.06; 95% confidence interval [CI] 1.03–1.09, P < 0.001), relative wall thickness (RWT) of ≥ 0.407 (HR = 2.74, 95% CI 1.39–5.41, P = 0.004), a reduced peak atrial systolic mitral annular velocity (HR = 0.845, 95% CI 0.72–0.99, P = 0.037), and an advanced age (HR = 1.04, 95% CI 1.01–1.07, P = 0.009) were independently related to the development of nonvalvular AF. Therefore, reduced A ′ , which is parameter of LA contractile function, might be an important predictor for the development of nonvalvular AF. (ECHOCARDIOGRAPHY, Volume 26, July 2009)