Left ventricle partial and global diastolic function evaluated in patients with silent myocardial ischemia by Doppler combined with dobutamine stress echocardiography
- VernacularTitle:多巴酚丁胺负荷试验结合多普勒评价无症状性心肌缺血左室节段与整体舒张功能
- Author:
Xianghong CHEN
;
Xiaoling LAI
;
Youqun YIN
;
Yuhuan XIE
;
Ziai LIU
- Publication Type:Journal Article
- Keywords:
Ultrasonography,Doppler,color;
Echocardiography;
Myocardial ischemia;
Heart function tests
- From:
Chinese Journal of Primary Medicine and Pharmacy
2008;15(6):913-915
- CountryChina
- Language:Chinese
-
Abstract:
ObjectiveTo evaluate left ventricle partial and global diastolic function in patients with silentmyocardial ischemia (SMI) by Doppler tissue imaging (DTI) combined with dobutamine stress echocardiography(DSE).Methods30 cases of silent myocardial ischemia(SMI) and 30 cases of normal control underwent dobu-tamine stressechocardiography(DSE). DTI was acquired at baseline and stress, and waveforms in mitral valve clos- ing, and the base and mid segments of left ventricle were used to measure diastolic early velocity(Ve), diastolic latelyvelocity(Va) ,and E deceleration time(Te). ResultsⅤ in control group increased accompanied with the increasingdose of dobutamine, Ve/Va decreased a little but not significantly. Ⅴ in the group with silent myocardial ischemia(SMI) increased at 10μg·kg-1·min-1 ,but decreased at 40μg·kg-1·min-1 compared with 10μg·kg-1·min-1 ,T inboth control and DSE group decreased at 40μg/kg accompanied with 10μg·kg-1·min-1, T in both control and DSEgroup decreased accompanied with the increasing dose of dobutamine, and there were significant differences betweenthe groups(P < 0.05). ConclusionDTI-DSE could quantificadvely detect the partial and global diastolic function ofleft ventricle.
