Interatrial septal motion as a novel index to predict left atrial pressure

被引:0
|
作者
Kumiko Masai
Hideyuki Kishima
Satoshi Takahashi
Kenki Ashida
Akiko Goda
Takanao Mine
Masanori Asakura
Masaharu Ishihara
Tohru Masuyama
机构
[1] Hyogo College of Medicine,Cardiovascular Division, Department of Internal Medicine
来源
Heart and Vessels | 2018年 / 33卷
关键词
Interatrial septal motion; Left atrial pressure; Atrial fibrillation; Transesophageal echocardiography;
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学科分类号
摘要
We investigated whether the interatrial septal (IAS) motion of each heartbeat which is observed by transesophageal echocardiography reflects left atrial pressure (LAP) in patients with atrial fibrillation (AF). We studied 100 patients (70 males, age 67 ± 9 years) who underwent catheter ablation for AF. The amplitude of IAS motion was measured using M-mode and averaged for five cardiac cycles. Left and right atrial pressures, the left to right atrial pressure gradient were directly measured during the catheter ablation. In patients with sinus rhythm during measurement, elevated mean LAP, larger maximum left to right atrial pressure gradient, and greater left atrial emptying fraction were associated with IAS motion. The optimal cut-off value of the IAS motion for predicting high LAP (mean LAP > 15 mmHg) was 8.5 mm (sensitivity 100%, specificity 70.1%) in patients with sinus rhythm during pressure measurement. In addition, all patients were divided into 6 groups based on rhythm during measurement and cutoff value of IAS motion. In patients with sinus rhythm during measurement, low IAS motion group had a highest prevalence of elevated LAP compared with high IAS motion group (64 vs. 0%, P < 0.0001). The amplitude of interatrial septal motion during sinus rhythm reflects left atrial pressure in patients with atrial fibrillation. Interatrial septal motion could be a new index to predict elevated left atrial pressure.
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页码:762 / 769
页数:7
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