Dynamic electrocardiogram combined with the value of coronary CT in the diagnosis of silent myocardial ischemia
CHEN Hui
LIU Guo-hua
PEI Li
Abstract：Objective To explore the diagnostic value of the dynamic electrocardiogram combined with coronary computer tomography angiography(CTA) for patients with suspected silent myocardial ischemia.Methods The 24-hour Holter monitoring electrocardiograms of 144 patients with myocardial ischemia were analyzed retrospectively,and were compared with coronary CTA of 122 patients with silent myocardial ischemia(SMI).Results ST segment depression was detected in 120 cases,ST segment elevation was detected in 24 cases.Among these cases,93 cases were SMI(64.6％),48 cases were painless myocardial infarction(PMI)(33.3％),3 cases were acute myocardial infarction(AMI)(2.1％).Among 93 SMI,the CTA findings of 71 cases(76.3％) were positive,including coronary artery stenosis ＞ 70％ in 42 cases(59％),coronary artery stenosis 50％-70％ in 29 cases(41％).In CTA display,172 stenosis coronary arteries were found(stenosis ＞ 70％ lesion were 69 arteries),20cases had single vessel disease,33 cases had 2 lesions and 18 cases had 3 lesions.Four cases involved left main coronary artery,42 cases involved left circumflex artery,65 eases involved left anterior descending and 61 eases involved right coronary artery.CTA findings of 22 cases(23.7％) were negative.Conclusion As a noninvasive,economic and easy method of cardiac examination,dynamic electrocardiography may reduce the probability of AMI and sudden death due to SMI.
Keywords：Myocardial ischemiaElectrocardiographyambulatoryComputer tomography angiography
Publication Date：2012-01-01
Online Publishing Date：2026-09-14(First online date of this platform, not the publication date of the document)