Observation of hemodynamic change of the left heart after transcatheter closure of atrial septal defects by echocardiography
- VernacularTitle:房间隔缺损Amplatzer封堵器封堵术后左心血流动力学改变的超声心动图观察
- Author:
Chun ZHANG
;
Zhian LI
;
Feng XUE
;
Jiong WANG
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Heart septal defects,artrial;
Ventricular function
- From:
Chinese Journal of Ultrasonography
2003;0(07):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the shape and the hemodynamic changes of the left heart after transcatheter closure of atrial septal defects(ASD) using Amplatzer occluder.Methods Sixty-five subjects with secondum ASD underwent transthoracic echocardiography(TTE) at pre-operation,48～72 h post-operation and follow-up performed more than 3 months after operation in 45 patients.The dimension of ASD,the parameters of the pulse-wave Doppler spectrums of the blood flow at the aotic valves and inlet of the left ventricle were recorded.At each position,systolic,early diastolic velocities and intervals were measured,the mitral annular movement spectrum was acquired at the lateral site of mitral annulus in the apical four-chamber view,Tei index and Tei_(TDI) index were derived from these parameters.Results All the patients had been implanted one Amplatzer occluder under the guide of echocardiography successfully.The preload of the left ventricular volume in the end of the diastolic period was increased and the low hemodynamic situation of the left heart and systemic circulation were corrected after the operation immediately.Accordingly,at 48～72 h after the operation,the end diastolic diameter,the stroke volume and the ejection fraction of the left ventricle were significantly improved continuously.However,the movement of the posterior wall decreased significantly at 48～72 h post-operation.The peak velocity of systolic period and the early diastolic velocities of the left ventricle were increased,but the ejection time had no changes follow-up.The systolic function of the left ventricle highlighted,the whole diastolic time prolonged after the 3 months of the operation.Tei index,Tei_(TDI) index and the heart rate had no difference between pre-and post-operation.Conclusions The anatomic deformation was corrected by transcatheter closure of ASD with Amplatzer occluder,the pre-load of left ventricular increased and had significant effect on the morphology and hemodynamic situation quickly,the left ventricular systolic and the diastolic function improved.The pre-load change of left heart had no effect on heart rate.Tei index and Tei_(TDI) index were independent of the pre-load and present the heart-self function.
