Clinical accuracy of cardiac remote monitoring, ECHO and DCG in the diagnosis for SMI / 中国医学装备

ABSTRACT

Objective:To investigate the clinical accuracy of cardiac remote monitoring, echocardiography (ECHO) and dynamic electrocardiography (DCG) in the diagnosis for silent myocardial ischemia (SMI) of coronary heart disease (CHD).Methods:63 patients with CHD were enrolled in this retrospective analysis and coronary angiography (CGA) was used as gold standard to analyze and judge the sensitivity, accuracy, specificity, positive predictive value, negative predictive value, Youden index and Kappa value of cardiac remote monitoring technique, ECHO and DCG in the diagnosis for SMI.Results: As the results of gold standard (CGA), 41 cases of 63 patients with CHD were diagnosed as SMI, the diagnose accordance rates of cardiac remote monitoring technique, ECHO and DCG, respectively, were 92.68%, 53.66% and 90.24%. And the sensitivity and specificity of the three methods for SMI, respectively, were 92.68% and 77.27%, 53.66% and 90.24%, and 86.36% and 22.73%. The Youden Indexes of the three methods were 0.700, 0.236 and 0.766, respectively. As above results, the Youden Indexes of cardiac remote monitoring technique and DCG were obviously higher than that of ECHO, and their diagnosis for SMI has excellent accordance with CGA. Conclusion:The technique of cardiac remote monitoring can be used as an effective supplementary means of DCG, and it has great clinical significance in the early diagnosis for SMI.