J Korean Soc Echocardiogr. 2001 Dec;9(2):97-104. Korean. Published online December 31, 2001. https://doi.org/10.4250/jkse.2001.9.2.97 | |
Copyright © 2001 Korean Society of Echocardiography |
Juyup Han, Yongwhi Park, Donghun Yang, Youngbae Seo, Hunsik Park, Shungchull Chae, Jaeeun Jun and Ehyun Park | |
Division of Cardiology, Department of Internal Medicine, School of Medicine, Kyungpook National University, Taegu, Korea. | |
Abstract
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BACKGROUND
Color M-mode doppler echocardiography has been suggested as a new noninvasive technique for assessing left ventricular diastolic function. The present study was performed to define the feasibility and value of color M-mode echocardiography for the assessment of left ventricular diastolic function in patients with acute coronary syndrome.
METHODS
Thirty six patients with acute myocardial infarcion and twenty three patients with unstable angina were included (M/F=41/18, 61±12.2 years). Doppler study was performed using ATL HDI-3000 within 24 hours after the attack. In color M-mode study, ROP was measured with 'Front wave method' and 'Baseline shift method'. The patients were grouped into three groups based on E/A ratio and deceleration time (DT) in transmitral flow and S/D ratio in pulmonary venous flow; Group I=Normal pattern (E/A>1, S/D>1, DT>140 ms), Group II=Impaired relaxation pattern (E/A<1, DT>140 ms) and Group III=Pseudonormal/Restrictive pattern (E/A>1.5, S/D<1, with or without DT< or =140 ms).
RESULTS
Twenty two, thirty four, and three patients were assigned to Group I, II, III, respectively. The ROP could be measured with 'Front wave method' in 50 patients (84.7%), but with 'Baseline shift method' only in 19 patients (32.2%). ROP with 'Front wave method' was 65±25.7, 61±35.6, 71±35.2 cm/sec in Group I, II, III, respectively. There was no statistically significant difference in the value of ROP between group I and II (p>0.05).
CONCLUSION
The ROP seems not to reflect the diastolic function in acute coronary syndrome, although it is measurable with the 'Front wave method' in most cases. The measurement of the ROP with 'Baseline shift method' is not feasible in the patients with acute coronary syndrome. |
Keywords: Diastolic function; Color M-mode doppler echocardiography; Acute coronary syndrome |