Shin Sung-Hee, Park Mi-Young, Oh Woong-Jin, Hong Soon-Jun, Pak Hui-Nam, Song Woo-Hyuk, Lim Do-Sun, Kim Young-Hoon, Shim Wan-Joo
Cardiovascular Division, Department of Internal Medicine, Korea University Medical Center, Seoul, Republic of Korea.
J Am Soc Echocardiogr. 2008 Jun;21(6):697-702. doi: 10.1016/j.echo.2007.10.022. Epub 2008 Jan 9.
Recurrence of atrial fibrillation (AF) after radiofrequency catheter ablation (RFCA) is not uncommon, and the predictors of AF recurrence are not completely understood. This study aimed to investigate the clinical and echocardiographic factors associated with AF recurrence after RFCA.
Sixty-eight patients with AF who had undergone RFCA were enrolled. Echocardiographic parameters, including the size of the left ventricle and both atria, left ventricular and left atrial function, and clinical parameters were assessed. Six months after RFCA, 53 (78%) of the 68 patients were free of AF and 15 patients showed AF recurrence. Patients without AF recurrence had a greater frequency of paroxysmal AF compared with patients with recurrence (P = .04). Left atrial volume (P = .00) and right atrial volume (P = .01) were associated with AF recurrence. Multivariate analysis revealed that left atrial volume was the only predictor of AF recurrence after RFCA (P = .01). Left atrial volume of 34 mL/m(2) showed a sensitivity of 70% and a specificity of 91% to predict AF recurrence.
Left atrial volume could be used as a predictor of AF recurrence after RFCA. Left atrial volume of 34 mL/m(2) had a sensitivity of 70% and a specificity of 91% for the prediction.
射频导管消融术（RFCA）后房颤（AF）复发并不少见，且房颤复发的预测因素尚未完全明确。本研究旨在探讨与RFCA术后房颤复发相关的临床和超声心动图因素。
纳入68例接受过RFCA的房颤患者。评估超声心动图参数，包括左心室和双心房大小、左心室和左心房功能以及临床参数。RFCA术后6个月，68例患者中有53例（78%）无房颤复发，15例患者出现房颤复发。与复发患者相比，无房颤复发患者阵发性房颤的发生率更高（P = 0.04）。左心房容积（P = 0.00）和右心房容积（P = 0.01）与房颤复发相关。多因素分析显示，左心房容积是RFCA术后房颤复发的唯一预测因素（P = 0.01）。左心房容积为34 mL/m²时，预测房颤复发的敏感性为70%，特异性为91%。
左心房容积可作为RFCA术后房颤复发的预测指标。左心房容积为34 mL/m²时，预测的敏感性为70%，特异性为91%。
