房颤患者左心耳血流频谱对除颤成功率的预测

目的　探讨房颤患者左心耳血流频谱类型与除颤成功率的关系。方法　应用多平面经食管超声心动图 (TEE)对 6 2例非瓣膜性房颤患者的左心耳血流频谱进行了检测 ,并与除颤成功率进行了对比分析。结果　本组病例左心耳血流频谱显示 3种类型。第 1种类型为在整个心动周期内表现持续而明确的不规则充盈波及排空波 ,其除颤成功率为 10 0 % ;第 2种类型为在整个心动周期内出现不连续的低小充盈波及排空波 ,其除颤成功率为 80 % ;第 3种类型为整个心动周期内显示持续的低流速波 ,除颤均未转复窦性心律。结论　房颤患者通过TEE对左心耳血流频谱的检测 ,可预测除颤治疗的成功率。

Prediction of Defibrillation Success Rate by the Left Atrial Appendage Blood Flow Wave Patterns in Patients with Atrial Fibrillation

Objective To discuss the relation between the left atrial appendage (LAA) blood flow wave patterns and the defibrillation success rate in patients with nonvalvular atrial fibrillation (NVAF). Methods The LAA blood flow wave patterns in patients with NVAF were taken and the relation of the defibrillation success rate was analyzed. Results Three types of LLA blood flow frequency spectrum appeared in the group. The first showed continuous, definite and irregular LAA filling and emptying flow waves throughout the whole cardiac circle and its defibrillation success rate was 100%. The second was intermittent, lower wave displayed and its defibrillation success rate was 80%. The third manifested the continuous, lower flow velocity waves and didn't obtain the success after defibrillation. Conclusion The test of the LAA blood flow frequency spectrum in patients with NVAF by using TEE might predict the success rate following defibrillation treatment.