The clinical diagnostic value of anatomic M-mode echocardiography in coronary artery diseases

Abstract

Objective To investigate the clinical value of anatomic M-mode echocardiography (AMM) for pristine diagnosis of myocardial ischemia in patients with coronary heart diseases (CAD). Methods 44 inner patients who were suspected as CAD were detected.Ordinary ultrasound was performed first.The ventricular segmental wall thickness and amplitude were measured by AMM.Then, we got the ventricular wall thickening fractions.All subjects should take the coronary angiography after the ultrasound examination in 1-3 days.Patients with the vascular stenosis rate≥50% were defined as the CAD group, patients with the completely normal angiographic results were included in the normal control group according to the results of angiography.The parametric differences between the patients and the normal control subjects were compared. Results In the normal control subjects, the ventricular segmental wall amplitude>5mm accounted for 78.67%, the ventricular wall thickening fractions>30% accounted for 99.13%.But in CAD group, the ventricular segmental wall amplitude<4mm accounted for 61.14%, <5mm accounted for 93.47%, the abnormal ventricular wall thickening fractions<30% accounted for 88.43%.The sensitivity, specificity, accuracy of AMM were 77.47%, 90.00%, 77.39% respectively. Conclusion The ventricular wall thickening fractions of AMM has quite significant correlation with morbid blood vessel in patients with CAD, they are effective reference indicators to evaluate the left ventricular wall motion quantitatively. Key words: Coronary disease; Echocardiography, three-dimensional