阵发性心房颤动患者心房收缩时间和电-机械时间离散度的研究  

Study on dispersion of atrial contraction time and electromechanical time in paroxysmal atrial fibrillation patients

作　　者：崔琪琼[1] 张薇[1] 郑兆通[1] 黎莉[1] 张运[1] 

机构地区：[1]山东大学齐鲁医院心内科,济南250012

出　　处：《中华超声影像学杂志》2003年第4期197-199,共3页Chinese Journal of Ultrasonography

摘　　要：目的　探讨阵发性心房颤动 (房颤 )患者心房不同部位应用多普勒组织成像 (DTI)心房收缩时间 (A)和电 机械时间 (P A)离散度的变化。方法　房颤组 5 8例 ,正常组 3 1例。取心尖四腔观 ,将DTI取样容积分别置于室间隔房室环、左室侧壁二尖瓣环和右室侧壁三尖瓣环处 ,测量 3个部位P A和A值 ,计算不同部位之间P A、A的差值。结果　与对照组比较 ,房颤组年龄、收缩压、左右房径明显增大 ;左室侧壁二尖瓣环和右室侧壁三尖瓣环之间P A、A的差值 (T3、TT3 )明显增大 [T3 :( 2 4.2 7± 18.2 9)ms对 ( 16.76± 10 .96)ms ,P <0 .0 5 ;TT3 :( 3 9.2 8± 19.2 6)ms对 ( 2 9.3 7± 15 .3 9)ms ,P <0 .0 5 ] ,T3与左心房径、年龄正相关 (P <0 .0 5 )。结论　阵发性房颤患者左右心房收缩时间、电 机械时间的离散度增大 ,年龄、左心房扩大可能是主要影响因素。ObjectiveTo determine the dispersion of atrial contraction time(A) and electromechanical time (P A) in different parts of atria among paroxysmal atrial fibrillation (PAF) patients by Doppler tissue imaging (DTI). MethodsDTI data were acquired in 58 PAF patients and 31 normal subjects. The DTI images of various parts were obtained by using apical 4 chamber view and sample volume was placed at the interventricular septum atrioventricular annulus, left lateral mitral annulus and right lateral tricuspid annulus, then P A and A were detected. The difference of P A and A between various parts of atria were calculated. ResultsThe dimension of left atria, right atria,systolic blood pressure and age in PAF group were much greater than those in controls. The difference of P A and A between left lateral mitral annulus and right lateral tricuspid annulus (T3,TT3) were significantly larger in PAF patients than in normal subjects[T3:( 24.27 ± 18.29 )ms vs ( 16.76 ± 10.96 )ms, P< 0.05 ;TT3: ( 39.28 ± 19.26 )ms vs ( 29.37 ± 15.39 )ms, P< 0.05 ]. T3 related to the dimension of left atria and age. ConclusionsThe dispersion of atrial contraction and electromechanical time between left and right atria among PAF patients were obviously increased, aging and the dilation of left atria may be the best predictive factor.

关 键 词：阵发性心房颤动 心房收缩时间 电-机械时间 离散度 心房功能 电生理学 

分 类 号：R541.75[医药卫生—心血管疾病]