Deniz Ali, Yavuz Bunyamin, Aytemir Kudret, Hayran Mutlu, Kose Sedat, Okutucu Sercan, Tokgozoglu Lale, Kabakci Giray, Oto Ali
Department of Cardiology, Ulus State Hospital, Ankara, Turkey.
Echocardiography. 2009 Aug;26(7):779-84. doi: 10.1111/j.1540-8175.2008.00881.x.
There are some clinical and echocardiographic parameters to predict paroxysmal atrial fibrillation (PAF), but more sensitive predictors are needed. Tissue Doppler imaging may be a sensitive method for this purpose.
Thirty-four patients with PAF and 31 control subjects were studied. Time intervals from the beginning of P-wave to beginning of A-wave from lateral and septal mitral and right ventricular tricuspid annuli in tissue Doppler imaging were recorded. The differences between these intervals gave the mechanical delays between/within the corresponding atria.
There were no differences between groups with regard to age. PAF patients were found to have increased left atrial dimension and intra-left atrial mechanical delay. Twenty-five milliseconds was calculated as cutoff value to predict PAF. P-wave dispersion was found to be increased in PAF.
This study shows an increase in intra-left atrial mechanical delay in PAF patients. This method can be used as an early marker to detect PAF.
有一些临床和超声心动图参数可用于预测阵发性心房颤动（PAF），但仍需要更敏感的预测指标。组织多普勒成像可能是实现这一目的的一种敏感方法。
对34例PAF患者和31例对照者进行研究。记录组织多普勒成像中从二尖瓣外侧和间隔以及右心室三尖瓣环处P波起始至A波起始的时间间隔。这些间隔的差异得出相应心房之间/内部的机械延迟。
两组在年龄方面无差异。发现PAF患者左心房内径增加且左心房内机械延迟增加。计算得出25毫秒为预测PAF的截断值。发现PAF患者的P波离散度增加。
本研究显示PAF患者左心房内机械延迟增加。该方法可作为检测PAF的早期标志物。
