Prevalence of Brugada ECG pattern in psychiatric patients: a longitudinal prospective cohort of 550 patients

Abstract Background Brugada syndrome (BrS) is an inherited disorder with autosomal dominant transmission, which occurs predominantly in males in the third to fourth decade of life with resting syncope, nocturnal agonic breathing, major ventricular arrhythmias and sudden death. Arrhythmic complications can occur spontaneously or following exposure to triggers such as fever, or certain categories of medications, including psychiatric drugs. Aim of the study To evaluate the prevalence of Brugada ECG pattern in psychiatric patients. Methods from January 2023 to Decembre 2023, 550 consecutive patients who were admitted to the psychiatric department of our university hospital were enrolled. For each patient, electrocardiographic and anamnestic data including psychiatric diagnosis, current drug therapy and family history were collected. Results Twenty-one out of five-hundred and fifty patients (3.8%) presented with a Brugada ECG pattern. Mean age was 42±6 years and seventeen out of twenty-one patients (81%) were male. Two patients exhibited a Spontaneous type 1 Brugada ECG pattern meanwhile nineteen patients had a Brugada type 2 or 3 ECG pattern. When compared to the general population, those with Brugada ECG had longer P wave duration (110±7 vs 103±13 msec p<0.01) and longer QRS duration (97±14 vs 89±12 msec p=0.04). Evaluating psychiatric disorders, patients with Brugada ECG had high prevalence of mood disorders (10 out of 21, 47%). Other disorders were schizophrenia (3 out of 21, 14%), cognitive retardation (5 out of 21, 23%), and attention disorder (1 out of 21, 5%). Moreover 4 patients were drug addicted. Only 5 out of 21 (24%) patients had a family history of psychiatric and neurological disorders. Conclusions Brugada ECG pattern has a prevalence of 3.8% in a large cohort of psychiatric patients. Mood disorders was the most common diagnosis in this cohort. Large prospective registries are needed to evaluate the clinical feature and potential clinical implication of this findings.