Synchronous12-lead Holter Monitoring And64-128-slice Spiral CT Evaluation Of The Correlation Between Myocardial Ischemia And Coronary Artery Stenosis Study

Objective:to evaluate dynamic synchronous12lead ecg (ambulatory electrocardiography, AECG) and128layer spiral CT coronary artery imaging of myocardial ischemia (myocardialischemia) and coronary A narrow correlation studies Methods:selected40patients with stable angina line64row128layer spiral CT coronary artery imaging. In patients with coronary artery CT results will be divided into degree of coronary artery stenosis<50%group and a coronary artery stenosis50%or more. AECG check again for the test results to evaluate the situation of myocardial ischemia, of128layers spiral CT coronary artery imaging results by analysis, analysis of the coronary A narrow situation, analysis of AECG detection of myocardial ischemia and spiral CT coronary shown in A narrow degree of correlation.Results:128layer spiral CT evaluation of170coronary artery, blood vessels are normal for142cigarettes, narrow to28teams. When the coronary artery stenosis<50%, AECG in the diagnosis of myocardial ischemia were41.1%, negative rate was58.8%. When coronary artery stenosis50%or higher coronary CT display for single lesions and multivessel disease. Single coronary stenosis, the sensitivity of the detection rate of70.1%, multivessel coronary artery disease, mainly for the champions league branch, left anterior descending coronary and left right coronary artery stenosis, the sensitivity was85.9%, positive predictive value was87.4%, negative predictive value was88%,128layers spiral CT shows that the sensitivity of multivessel coronary stenosis is higher than single lesion detection rate is as high as93.3%, AECG in the diagnosis of myocardial ischemia positive rate was75%, the negative rate of25%.Conclusion:(1) the role of12lead AECG in the diagnosis of stable angina is very important, plays an irreplaceable role.(2) AECG in the diagnosis of myocardial ischemia and128layer spiral CT on coronary artery stenosis degree, but not always narrow ischemia, on the contrary, ischemia may not have severe stenosis.(3)128layers spiral CT coronary artery imaging of coronary heart disease (CHD) related to vascular atherosclerotic stenosis degree and the lesion count of high sensitivity and accuracy of the diagnosis, diagnostic accuracy for LMCA and LAD stenosis is higher than the other branches of coronary artery.(4)128joint AECG layer spiral CT coronary artery imaging showed that the degree of coronary stenosis50%or higher for PCI treatment, not necessarily AECG predictions for adverse cardiac events also play an important role.