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Exercise echocardiography in the diagnosis of coronary artery disease
M Luotolahti1, M Saraste, J Hartiala
1Department of Clinical Physiology, Turku University Central Hospital, Finland.
Insights
Exercise echocardiography is a reliable tool for diagnosing coronary artery disease, showing high sensitivity in detecting ischaemic heart disease. This non-invasive test effectively screens patients with suspected heart conditions.
Area of Science:
- Cardiology
- Diagnostic Imaging
Background:
- Coronary artery disease (CAD) diagnosis relies on invasive methods.
- Non-invasive diagnostic tools are needed for effective screening.
Purpose of the Study:
- To evaluate exercise echocardiography's diagnostic accuracy for coronary artery disease.
- To compare exercise echocardiography results with coronary angiography findings.
Main Methods:
- 118 patients with suspected ischaemic heart disease underwent exercise echocardiography.
- Exercise echocardiography was performed using a cycle ergometer.
- Results were compared against coronary angiography outcomes.
Main Results:
- Exercise echocardiography demonstrated 94% sensitivity in detecting ischaemic heart disease.
- Of 108 patients with CAD, 101 showed abnormal exercise echocardiograms.
- Specificity was 70%, with 3 of 10 patients without CAD exhibiting abnormal results.
Conclusions:
- Exercise echocardiography is a dependable method for screening ischaemic heart disease.
- The test is easily integrated with standard exercise examinations.
- This non-invasive approach aids in diagnosing coronary artery disease.
Abstract:
The purpose of this study was to test the applicability of exercise echocardiography in the diagnosis of coronary artery disease. The results were compared to findings of coronary angiography. 118 patients, 100 males and 18 females, who were all referred to coronary angiography for suspected ischaemic heart disease, underwent exercise echocardiography using a cycle ergometer. At coronary angiography 108 patients had significant stenosis in at least one coronary artery. Ten patients had angiographically normal coronary arteries. A new or increased wall motion abnormality detected by echocardiography after the exercise was considered an ischaemic response. Of the 108 patients with coronary artery disease, 101 had abnormal exercise echocardiograms, and the overall sensitivity of exercise echocardiography in detecting ischaemic heart disease was 94%. Among the 10 patients without coronary artery disease, seven had normal and three had abnormal exercise echocardiograms, and the specificity of the test was 70%. In conclusion, exercise echocardiography is a reliable diagnostic method in screening of ischaemic heart disease, and it can be combined relatively easily with the exercise examinations.