Diagnosis of coronary atherosclerosis using stress echocardiography with bicycle exercise

Abstract

Aim. To determine sensitivity and specificity of stress echocardiography (SEC) in diagnosis of stenosing atherosclerosis of coronary arteries (CA), especially in patients recovered from Q-myocardial infarction. Material and methods. The above sensitivity and specificity were studied in 75 patients (70 males and 5 females; mean age 53.7 ± 7 years) with coronary atherosclerosis (CS). Results. The sensitivity of impaired local contractility index (IL CI) in univessel lesion was 77.8%, in multivessel lesion - 90.4%, specificity - 85.7%. Sensitivity of other parameters studied was for development of an anginal episode 65.4%, increment of ejection fraction under 5% - 63.9%, increased end systolic volume - 61.1 %, depression of ST segment - 48.1 %, increased end diastolic volume 38.9%. A total of 3 parameters had 100% sensitivity: impossible a > 5% rise of EF in response to exercise, an increase of end systolic and diastolic volumes, anginal attack (85.7%), ST depression (78.6%). Conclusion. Hemodynamic parameters must be assessed in the course of SECG for objectiviiation of the result and improvement of its specificity.

Keywords

• stress echocardiography
• ischemic heart disease
• myocardial infarction
• hemodynamics