Evaluating atrial stunning and atrial function after cardioversion of atrial fibrillation with tissue Doppler,pulsed Doppler and M-mode echocardiography
- VernacularTitle:多普勒超声联合M型超声评价心房颤动复律后心房顿抑和心房功能
- Author:
Yan LIU
;
Ke WANG
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Atrial fibrillation;
Myocardial stunning;
Atrial function
- From:
Chinese Journal of Ultrasonography
2003;0(10):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate atrial stunning and the recovery of atrial function after successful cardioversion in the patients with atrial fibrillation by utilizing tissue Doppler imaging(TDI) and M-mode echocardiography in atria-ventricular annulus motion, together with pulsed Doppler echocardiography and apexcardiogram. Methods Thirty-four patients with atrial fibrillation received ultrasound examinations in 1 hour,1 day,1 week and 1 month after successful cardioversion. The results were compared with those of 20 age-matched healthy individuals. From the echocardiography apical 4-chamber views, the atrial mechnical activities in the mitral and tricuspid annulus were recorded using two-dimensional echocardiography guided M-mode and TDI. Furthermore, pulsed Doppler transmitral and transtricuspid inflow velocity and apexcardiogram were also recorded. Atrial stunning means the lack of atrial mechanical function after atrial electrical activity was recovered with successful cardioversion. Results Left and right atrial functions after cardioversion were both inferior to those of the healthy ones,but improved with time,up to 1 week right arial function turned basically to normal and 1 month left one recovered to normal.The incidence of atrial stunning in left and right atrium accounted for (20.6)% and (14.7)% respectively at 1 hour after successful cardioversion, (11.76)% and (14.7)% at 1 day, (6.5)% and (3.2)% at 1 week. Conclusions Both left and right atrial functions are lower than the normal after cardioversion,and atrial stunning happens in both atria.Left and right atria recover to normal respectively in 1 month and 1 week.
