Study on dispersion of atrial contraction time and electromechanical time in paroxysmal atrial fibrillation patients
- VernacularTitle: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
- Author:
Qiqiong CUI
;
Wei ZHANG
;
Zhaotong ZHENG
;
Al ET
- Publication Type:Journal Article
- Keywords:
Doppler tissue imaging;
Atrial fibrillation;
Atrial function;
Electrophysiology
- From:Chinese Journal of Ultrasonography
1993;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
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
