Impact of low-voltage zones on the left atrial anterior wall on the reduction in the left atrial appendage flow velocity in persistent atrial fibrillation patients
Impact of low-voltage zones on the left atrial anterior wall on the reduction in the left atrial appendage flow velocity in persistent atrial fibrillation patients
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DOI：
10.1007/s10840-019-00532-z
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发表时间：
2019-12-01
影响因子：
1.8
通讯作者：
Taguchi, Isao
中科院分区：
文献类型：
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作者：
Hori, Yuichi;Nakahara, Shiro;Taguchi, Isao
背景房颤（AF）患者左心耳（LAA）血流速度的降低与栓子的存在有关。LAA位于左心房（LA）前壁左上侧，我们研究了LAA流速（LAAFV）降低与左心房前壁低压区（LVZs < 0.5 mV）的关系。方法对146例持续性房颤患者行经食管超声心动图和导管消融术测量LAAFV。在窦性心律消融前进行LA测绘，记录任何前lvz的位置。结果81例左室前壁有LVZ，有LVZ的患者LAAFV明显低于无LVZ的患者(前LVZ(+) vs前LVZ(-) = 26 +/- 11 vs 34 +/- 10 cm/s, p < 0.001)，而与其他LVZ区域相比无显著差异。低laafv (
Background The reduction in the left atrial appendage (LAA) flow velocity is related to the presence of emboli in atrial fibrillation (AF) patients. The LAA is located on the left superior side of the left atrial (LA) anterior wall, and we investigated the relationship between the reduction in the LAA flow velocity (LAAFV) and low voltage zones (LVZs < 0.5 mV) on the LA anterior wall. Methods In 146 persistent AF patients, LAAFV measurements, by transesophageal echocardiography, and catheter ablation were performed. LA mapping was performed before ablation during sinus rhythm, and the locations of any anterior-LVZs were documented. Results Eighty-one patients had a documented LVZ on the LA anterior wall, and those with an LVZ had a significantly lower LAAFV compared to those without (anterior-LVZ(+) vs. anterior-LVZ(-) = 26 +/- 11 vs. 34 +/- 10 cm/s, p < 0.001), while no significant difference was observed when compared to the other LVZ regions. A low-LAAFV (