Manabe K, Oki T, Tabata T, Yamada H, Fukuda K, Abe M, Iuchi A, Fukuda N, Ito S
Second Department of Internal Medicine, Tokushima University School of Medicine, Japan.
Jpn Heart J. 1997 Jul;38(4):487-95. doi: 10.1536/ihj.38.487.
Left atrial appendage (LAA) flow velocities prior to electrical cardioversion were recorded using transesophageal pulsed Doppler echocardiography to predict initially successful cardioversion of isolated atrial fibrillation (AF). Patients with AF were placed into either a success group (19 patients) in which sinus rhythm was maintained for at least 2 days or a failure group (12 patients). The duration of AF was shorter in the success group. The maximum left atrial diameter was the same for the two groups. The maximum LAA area was smaller in the success group. The maximum forward and backward LAA velocities were greater in the success group, as were the mean forward and backward LAA velocities. In the patients with mean LAA flow velocities greater than 19 cm/sec, the success of cardioversion could be predicted with high sensitivity (80%) and specificity (88%). We conclude that the duration of AF, the maximum LAA area, and LAA flow velocities prior to cardioversion predict the initial recovery of sinus rhythm for isolated AF.
在电复律前，使用经食管脉冲多普勒超声心动图记录左心耳（LAA）血流速度，以预测孤立性房颤（AF）首次电复律是否成功。房颤患者被分为成功组（19例患者），即窦性心律维持至少2天，以及失败组（12例患者）。成功组房颤持续时间较短。两组的最大左心房直径相同。成功组的最大LAA面积较小。成功组的最大LAA前向和后向血流速度以及平均LAA前向和后向血流速度均更高。在平均LAA血流速度大于19 cm/秒的患者中，电复律成功可通过高敏感性（80%）和特异性（88%）进行预测。我们得出结论，房颤持续时间、最大LAA面积以及电复律前的LAA血流速度可预测孤立性房颤窦性心律的初始恢复情况。
