Correlation between Stress Echocardiography and Coronary Angiography Results: Insights from 134 Cases

Background: Stress echocardiography is widely used to assess myocardial ischemia. The objective of this study was to investigate the correlation between stress echocardiography results and coronary angiography findings, and to analyze the factors influencing these parameters. Methods: This retrospective study analyzed 134 patients referred to the Cardiology A Department of Ibn Sina Hospital in Rabat. After confirmation of positive stress echocardiography, coronary angiography was performed. The inclusion criteria were patients aged 18 years and older with complete test results. Exclusion criteria included recent myocardial infarction, uncontrolled arrhythmias, severe aortic stenosis, heart failure class III or IV, inability to perform an exercise test, advanced respiratory diseases, history of coronary artery disease, and incomplete or poor-quality data. Results: The average age of the patients was 58 years, with a predominance of men (53%). Indications for stress echocardiography were primarily symptoms of coronary artery disease in 87% of patients. The ischemic territory was mainly the left anterior descending artery (LAD) in 49.7% of patients. This is consistent with the findings observed in coronary angiography. 25.4% of patients with positive stress echocardiography had normal coronary angiography. Factors associated with non-significant angiographic coronary artery disease included younger age, female gender, absence of diabetes, absence of hypertension history, and negative stress ECG results. Conclusion: The main advantages of stress echocardiography lie in its availability, low cost, and non-irradiating nature. Its main limitation is the subjective nature of its interpretation, which requires a skilled and qualified operator. Our study indicated that the results of stress echocardiography and coronary angiography had a positive correlation. This non-invasive examination is reliable for the diagnosis and prognosis of coronary artery disease.