A study of the clinical application value of ultrasound and electrocardiogram in the differential diagnosis of cardiomyopathy.

Objective: To investigate the clinical application values of electrocardiogram (ECG) combined with ultrasound cardiogram (UCG) in the differential diagnosis of cardiomyopathy.

Methods: A total of 120 patients with cardiomyopathy who were admitted to our hospital were randomly divided into the dilated cardiomyopathy (DCM) group (60 cases) and the ischemic cardiomyopathy (ICM) group (60 cases). Both groups were examined using ECG combined with UCG. The ultrasonic values (aorta, LADI, LVDd, LVESD, RVID, SV, LVEF, LVET, EPSS, E/A, RV6, RV6/RMAX), morphological changes (thin and round left ventricular apex, spherical left ventricle, arch-shaped left ventricle, segmental wall-motion abnormalities (SWMAs), diffuse wall motion abnormalities (DWMAs), paradoxical ventricular wall motion) and heart valve regurgitation (aortic valve, mitral valve, tricuspid valve, pulmonary valve) were compared and analyzed.

Results: The degree of chamber enlargement in the DCM group was remarkably higher than that in the ICM group, but the degree of LVEF and aortic enlargement were significantly lower than those in the ICM group (<0.05). The detection rates of spherical left ventricle and DWMAs in the DCM group were 60.00% and 100.00% respectively, which was significantly higher than those (6.66% and 40.00%) of the ICM group (<0.05), but the detection rates of thin and round left ventricular apex, arch-shaped left ventricle, SWMAs, and paradoxical ventricular wall motion were 53.33%, 66.66%, 46.66% and 20.00% respectively in the ICM group, which were markedly higher than those in the DCM group. The incidence rates of aortic valve, mitral valve, tricuspid valve and pulmonary valve in the DCM group were 66.66%, 100.00%, 46.66% and 76.66%, which were notably higher than those (36.66%, 93.33%, 26.66% and 40.00%) in the ICM group (<0.05).

Conclusion: ECG combined with UCG examination can effectively improve the judgment rate and diagnosis accuracy of cardiomyopathy. Due to its high safety, ECG combined with UCG examination is worthy of clinical promotion and application.