Clinic study of strain rate and dobutamine stress echocardiography in the diagnosis of coronary heart disease
- VernacularTitle:多巴酚丁胺负荷超声心动图结合应变率评价冠心病的临床研究
- Author:
Ruiqiang GUO
;
Jiaqi HU
;
Qing ZHOU
;
Lidan HAO
;
Jinling CHEN
- Publication Type:Journal Article
- Keywords:
Echocardiography,stress;
Dobutamine;
Coronary disease;
Strain rate
- From:
Chinese Journal of Ultrasonography
1993;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the value of strain rate and dobutamine stress echocardiography(DSE) in the diagnosis of coronary heart disease. Methods High-dose DSE was performed in 18 patients with coronary heart disease and 10 healthy persons, proved by selected coronary angiography. Ten patients had single coronary lesion, and the other 8 patients had more. By strain rate technology, systolic peak strain rate(SR_ SYS ) was measured in 12 segments of healthy persons and ischemic segments of patients. Results SR_ SYS of healthy subjects enhanced by the increasement of dose of DSE. In patients with single coronary lesion, SR_ SYS enhanced on the first states of baseline, 10 and 20 ?g?kg -1 ?min -1 ,while SR_ SYS changed non-significantly on 30 ?g?kg -1 ?min -1 , and began to decrease on 40 ?g?kg -1 ?min -1 . However in patients with more than one coronary lesions, SR_ SYS of 10 ?g?kg -1 ?min -1 became larger than that of baseline, while SR_ SYS didn't increase any longer on 20 ?g?kg -1 ?min -1 , and fell significantly on 40 ?g?kg -1 ?min -1 . Conclusions Combining stain rate and DSE to quantify local myocardial motion is valuable to offer many important clinic messages, and improves the diagnosis of coronary heart disease.
