Abstract:Objective To evaluate the values of left atrial volume, function and synchrony in patients with coronary atherosclerotic heart disease by dynamic electrocardiogram. Methods From August 2016 to February 2018, 72 patients with coronary heart disease who were diagnosed and treated in the Department of Cardiology of our hospital were selected as the observation group. 72 patients with coronary artery stenosis rate < 30% were confirmed by coronary angiography were selected as the control group. The dynamic electrocardiogram were used to evaluate the left atrial volume, function and synchrony of the two groups of patients. Results There were no significant differences in gender, age, body mass index, systolic blood pressure, diastolic blood pressure and heart rates compared between the two groups (P > 0.05). The LAVmax, LAVmin and LAVp values in the observation group were higher than the control group, and the difference were statistically significant (P < 0.05). The left atrial function S and E values in the observation group were significantly lower than those in the control group, and the difference were statistically significant (P < 0.05). The P-ALA in the observation group were higher than the control group, and the difference were statistically significant (P < 0.05), and there were no significant difference in P-AIAS and P-ARA compared between the two groups (P > 0.05). Conclusion Dynamic electrocardiogram can accurately evaluate left atrial volume, function and synchrony in patients with coronary heart disease. It has significant clinical guiding significance for the clinical diagnosis and prognosis evaluation of coronary heart disease.