Characteristics and diagnostic value of echocardiography of patients with coronary heart disease / 第二军医大学学报

ABSTRACT

Objective: To observe the echocardiography characteristics of patients with coronary heart disease (CHD), and to discuss the diagnostic value of their echocardiography for CHD. Methods: From Jan. 2002 to Dec. 2006, a total of 276 patients with suspected CHD were examined by echocardiography; 190 patients also underwent coronary arteriography (CA) and 85 of them served as controls. The consistence between echocardiography results and CA results was analyzed. The abnormal echocardiography manifestations of the rest 105 patients were analyzed based on the stenoses and occlusion degrees revealed by CA. Results: The diagnostic consistent rate of routine echocardiographic examination was 90.6% compared with that of CA. The false positive and negative rates were both 4.7%. The echocardiographic features of CHD included the reduction of left ventricular diastolic function (74.4%), the left ventricle enlargement (23.2%), the left atrium enlargement (16.3%), and the reduction of left ventricular systolic function (9.3%). The echocardiographic features of coronary artery stenosis and occlusion included the reduction of left ventricular diastolic function (92.3%), the left ventricle enlargement (9.5%), the reduction of left ventricular systolic function (8.57%), and the reduction of E/A ratio. More diseased branches was associated with lower E/A ratio. The E/A ratios of patients with 1, 2, 3 and 4 diseased branches were 0.78, 0.66, 0.64 and 0.61, respectively; the difference of E/A ratios of different groups was significantly different (P<0.05). Conclusion: Routine echocardiographic examination has a high consistent rate with CA in diagnosis of CHD, and it is suitable for popularizing in grass-root hospitals. Reduction of left ventricular diastolic function is the main echocardiographic feature of CHD, and more attention should be paid on related parameters, but the influence of arrhythmia and other factors should be ruled out.