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Distribution of coronary artery disease. Prediction by echocardiography
Insights
Standard echocardiography effectively detects ventricular motion abnormalities in coronary artery disease (CAD) patients without prior heart attack. This imaging technique aids in predicting the location and extent of CAD, particularly left anterior descending artery disease.
Area of Science:
- Cardiology
- Medical Imaging
Background:
- Coronary artery disease (CAD) diagnosis often relies on invasive angiography.
- Non-invasive methods for assessing CAD-related ventricular dysfunction are crucial.
Purpose of the Study:
- To evaluate the sensitivity of standard echocardiography in identifying ventricular motion abnormalities in patients with CAD but no history of myocardial infarction.
- To determine if echocardiographic findings can predict the location of CAD.
Main Methods:
- 56 patients with angina pectoris (CAD) but no prior myocardial infarction were studied during an angina-free period.
- Echocardiography assessed left ventricular wall motion (septal and posterior) in high, mid, and low regions.
- Findings were prospectively correlated with angiographically determined CAD locations.
Main Results:
- 80% of patients with left anterior descending artery (LAD) disease showed diminished interventricular septal motion.
- 52% of patients with posterior vessel disease exhibited reduced posterior wall motion.
- Echocardiographic wall motion abnormalities correlated well with left ventriculography findings.
Conclusions:
- Standard echocardiography demonstrates significant sensitivity in detecting ventricular motion abnormalities associated with CAD.
- Echocardiography can assist in predicting the presence and distribution of CAD, especially disease affecting the LAD.
- This non-invasive technique offers a valuable tool for CAD assessment.
Abstract:
To assess the sensitivity of standard echocardiography in detecting ventricular motion abnormalities in patients with coronary artery disease (CAD) without prior myocardial infarction, 56 consecutive patients with a history of angina pectoris were studied during an angina-free period. In the 48 patients with adequate echocardiograms, the amplitude of septal and posterior wall motion in the high, mid, and low left ventricle was determined and used to predict prospectively in a blinded fashion the sites of angiographically-determined CAD. Twenty-eight of 35 patients (80%) with disease of the left anterior descending artery (LAD) had diminished interventricular septal motion (P less than 0.001) and 14 of 27 patients (52%) with disease of posterior vessels had diminished posterior wall motion on echocardiogram. When abnormalties of echocardiographic wall motion were compared with left ventriculography, the results were similar. Echocardiography may aid in predicting the presence and distribution of CAD, especially LAD disease.