左心房容积指数与心房颤动导管消融预后的关系Prognostic implications of left atrial volume index with catheter ablation of atrial fibrillation
李康,丁燕生,杨俊娟,盛琴慧,周菁,杨颖
摘要(Abstract)：
目的探讨左心房大小与心房颤动(房颤)导管消融术预后的相关性及其评估指标。方法本中心2005年5月至2006年11月行房颤导管消融的连续43例患者,平均年龄60±12岁,男25例(58%);持续房颤5例(12%);CARTO三维标测下行环肺静脉左心房线性消融。二维超声双平面Simpson法测量左心房前后径(LAD)、上下径和左右径及左心室射血分数(LVEF),椭圆公式(Pum-bo法)计算左心房容积(LAV),体表面积(BSA)标化计算左心房容积指数(LAVI)和左心房内径指数(LADI)。消融后3个月评价疗效,单因素和多因素分析年龄、性别、房颤病史、高血压、LAD、LAV、LADI、LAVI、LVEF与房颤导管消融后复发的关系。结果单次消融3个月后15例(34%)患者有复发。复发组与消融治疗有效组LAVI差异有统计学意义(68.19±23.68mL/m2和52.07±17.34mL/m2,P=0.019),复发组LAVI95%CI54.70～80.30mL/m2。而年龄(59.5±12.0岁和60.5±12.0岁,P=0.806)、性别(男/女分别为7/9和18/9,P=0.338)、房颤病史(4.4±4.2年和5.8±5.3年,P=0.46)、高血压患病率(6/15和11/27,P=0.963)、LAD(4.01±0.50cm和3.87±0.50cm,P=0.41)、LADI(0.0476±0.0018和0.0423±0.0020,P=0.093)、LAV(53.92±17.14mL和49.92±16.65mL,P=0.471)、LVEF(69.7%±10.1%和70.2%±11.0%,P=0.91)差异均无统计学意义。Logistic回归分析LAVI与复发的Pearson相关系数r=0.374呈正相关,OR=1.04,95%CI0.99～1.09,P=0.04。结论LAVI评估左心房的大小优于左心房内径、LADI和LAV等参数;LAVI与房颤导管消融术后成功率相关,可预测房颤导管消融术的预后。我们的研究提示,LAVI≥55mL/m2可作为判断房颤导管消融术后复发高危的参考指标。
关键词(KeyWords)： 心脏容量;心房颤动;导管消融术
基金项目(Foundation):
作者(Author): 李康,丁燕生,杨俊娟,盛琴慧,周菁,杨颖
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