The comparative analysis of resting electrocardiogram and intravenous myocardial contrast coronary angiography for the diagnosis of heart disease

Abstract

Objective To explore the diagnostic value of resting electrocardiogram (ECG) and intravenous myocardial contrast echocardiography (MCE) for the diagnosis of coronary heart disease and vascular lesions associated sites of the sensitivity,specificity and accuracy.Methods May 2009 to November 2010,selected 78 patients,39 ones were male and the others were female,aged f45-75,the average age was (50.8 ± 12.9) years (excluding cardiomyopathy,Hypertensive heart disease and diabetes)from the Department of Cardiology at Binzhou People' s Hospital.22 cases were diagnosed with coronary heart disease conbined with myocardial infarction,13 cases with angina pectoris (including one case of variant angina),23 cases were suspected with coronary artery disease,20 cases with unknown chest pain.The same period (＜2 weeks),carried out resting Electrocardiogram and cardiac ultrasound contrast and coronary on them.Results 1.There was statistically significant difference among MCE diagnosis of coronary artery disease susceptibility,resting ECG,and resting ECG + MCE (P＜0.05).There was statistically significant difference between resting ECG + MCE specific diagnosis of coronary artery disease and resting ECG,MCE e (P＜0.05).2.Using MCE,resting ECG,and resting ECG + MCE to speculate LAD,LCX had higher sensitivity(P＜0.05).There was statistically significant difference on the specificity between using resting ECG + MCE to speculate LAD,LCX and using resting ECG,MCE (P＜0.05).3.Among resting ECG,MCE,resting ECG + MCE RCA speculating on the sensitivity,specificity,and accuracy,the difference was not significant (P＞ 0.05).Conclusion 1.Resting ECG for the diagnosis of coronary heart disease and vascular diseases related to the judge has some limitations.2.MCE for the determination of coronary heart disease and coronary artery LAD,LCX has a higher sensitivity.3.Resting ECG + MCE for the exclusion of coronary heart disease and LAD,LCX lesions has some reference value.4.CAG for the diagnosis of coronary artery disease is the gold standard; it still is an irreplaceable method for the diagnosis of coronary heart disease. Key words: Resting electrocardiogram; Iintravenous myocardial contrast; Coronary angiography; Coronary heart disease