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Abstract Objective To compare the value of computed tomographic coronary angiograpy (CTA) and electrocardiogram (ECG) in diagnosis of coronary artery disease (CAD) in elders. Methods 148 elders admitted for suspicious CAD were included and underwent CTA and ECG examination. Of them, 96 cases underwent coronary angiography. The sensitivity and specificity of CTA and ECG in diagnosis of CAD were determined based on the results of coronary angiography. Results The sensitivity, specificity and accuracy of CTA were 90.1%, 88.1% and 88.8%, respectively, those of ECG were 72%, 57.1%and 68.8%, respectively, in the diagnosis of CAD. The sensitivity of ECG was highest and false negative rate lowest in cases with vessel stenosis ≥90%. It was significantly lower in cases with stenosis <90% than in cases with stenosis≥ 90%(P<0.01). Conclusion Coronary CTA had higher sensitivity and specificity in detection of critical coronary stenosis and maybe used as an effective method in diagnosis of CAD in elders. ECG is of some value in diagnosis of serious coronary stenosis in elders.
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