Journal of International Psychiatry

[Abstract] Objective To explore the influence of anxiety disorder on electrocardiogram in patients with myocardial infarction. Methods A total of 120 patients with myocardial infarction from January 2019 to June 2022 were selected as the study subjects. They were divided into anxiety disorder group and non anxiety disorder group according to the self rating anxiety scale (SAS) evaluation results. All patients underwent continuous 24-hour ambulatory electrocardiogram monitoring. The abnormal electrocardiogram conditions such as ventricular premature beats and tachycardia were recorded. The heart rate variability (HRV) indicators such as the standard deviation between NN intervals (SDNN) and the root mean square difference between adjacent NN intervals (rMSSD) were recorded. Results 44 cases of anxiety disorder were detected in 120 patients with myocardial infarction. The incidence of ventricular premature beats, tachycardia, ventricular fibrillation, and atrial premature beats in the anxiety group was significantly higher than that in the non anxiety group (P<0.05). There was no significant difference in atrial fibrillation, and bundle branch block between the two groups (P>0.05). The proportion of SDNN, rMSSD, and the number of adjacent normal cycles with a difference>50ms (PNN50) in the observation group was significantly lower than that in the non anxiety group (P<0.05). Conclusion The detection rate of anxiety disorder in patients with myocardial infarction is high, and the combination of anxiety disorder will increase the incidence of abnormal electrocardiogram in patients with myocardial infarction, reduce the patients HRV, and affect autonomic nervous function.

Key words Anxiety Disorder; Miocardial Infarction; Electrocardiogram; Heart Rate Variability