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心房颤动患者收缩期肺静脉血流特征的超声研究

Evaluation of systolic flow velocity patterns of the pulmonary vein in patients with atrial fibrillation by transesophageal echocardiography
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摘要 目的 探讨心动周期变化对不同病因心房颤动 (房颤 )患者肺静脉收缩期血流的影响。方法 对照组 2 0例 ;房颤组 74例 (非瓣膜病房颤 1 6例 ,风湿性心脏病二尖瓣轻中度狭窄 2 2例 ,二尖瓣重度狭窄 36例 )。应用经食管超声心动图测量肺静脉血流频谱曲线收缩早期逆向R波峰值流速 (PVR)和收缩期S波峰值流速(PVS) ,分析PVR和PVS与其前心电图R R间期的关系。结果 所有房颤患者均可检出收缩早期逆向R波 ,二尖瓣重度狭窄组PVR明显减低 ,PVR与其前的R R间期显著负相关 ;房颤患者的PVS减低 ,二尖瓣重度狭窄组尤为明显 ,PVS与其前的R R间期显著正相关。结论 房颤患者的PVR和PVS与其前的R R间期长短密切相关 ,连续观察PVR和PVS的变化 ,为动态评价房颤时左心房血流动力学异常提供了重要信息。 Objective To evaluate the effect of beat to beat alterations in the cardiac cycle length on systolic flow velocity patterns of the pulmonary vein in patients with atrial fibrillation(AF).Methods Pulmonary vein flow was recorded in 20 control subjects and 74 patients with AF (16 with nonvalvular AF,22 with mild to middle mitral stenosis,and 36 with severe mitral stenosis) by transesophageal echocardiography.The peak velocities of the early systolic reversal wave (PVR) and the systolic forward wave (PVS) were measured.The relationships between the preceding R-R intervals and PVR,PVS were analyzed.Results The early systolic reversal wave was detected in all patients with AF.PVR was significantly lower in patients with severe mitral stenosis than that in patients with nonvalvular AF and mild to middle mitral stenosis.The preceding R-R interval had a significant negative correlation with PVR.PVS was significantly lower in patients with AF than that in controls.The preceding R-R interval had a significant positive correlation with PVS.Conclusions PVR and the systolic forward wave vary with disease conditions and preceding R-R intervals in atrial fibrillation.The evaluation of systolic pulmonary venous flow velocity patterns provides important information about left atrial hemodynamic abnormalities.
出处 《中华超声影像学杂志》 CSCD 2003年第7期405-407,共3页 Chinese Journal of Ultrasonography
关键词 心房颤动 收缩期 肺静脉 血液动力学 超声心动图 Echocardiography,transesophageal Atrial fibrillation Pulmonary veins Hemodynamics
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