Evaluation of myocardial perfusion in patients with coronary slow flow by myocardial contrast echocardiography

• Published in: Zhōnghuá xīnxuèguănbìng zázhì Vol. 41; no. 4; p. 293
• Main Authors: Wang, Sheng-Huang, Zhu, Na, Zhou, Hong-Lin, Chen, Li-Bin, Cui, Han-Bin
• Format: Journal Article
• Language: Chinese
• Published: China 01.04.2013
• Subjects: Aged; Case-Control Studies; Coronary Circulation - drug effects; Dobutamine; Echocardiography - methods; Exercise Test; Female; Humans; Male; Middle Aged
• ISSN: 0253-3758
• DOI: 10.3760/cma.j.issn.0253-3758.2013.04.007

To explore myocardial perfusion of patients with coronary slow flow (CSF) using myocardial contrast echocardiography. Myocardial contrast echocardiography was performed in coronary artery angiography diagnosed CSF patients (n = 20) and control patients (n = 20). The images at baseline and after low dose dobutamine stress test were analyzed by automatic tracking software and the maximal amplitude score A, the mean ascending slope of the curve β and the product of A×β were measured. The reserve of A×β was also calculated. Electrocardiogram at rest and at each stage of dobutamine stress test was obtained simultaneously. At baseline, the A [(6.85 ± 2.99) dB vs. (7.01 ± 3.49) dB], β[(0.59 ± 0.33)/s vs. (0.61 ± 0.38)/s] and A×β [(3.48 ± 1.46) dB/s vs. (3.31 ± 0.96) dB/s] values were similar between CSF group and control group (all P > 0.05). After dobutamine stress test, both β and A×β were significantly increased in two groups. The β [(0.89 ± 0.42)/s vs. (1.31 ± 0.54)/s, P < 0.01] and A×β [(5.82 ± 2.69) dB/s vs. (