“QRS Fragmentation, Arrhythmias, and Myocardial Dysfunction in Nonhospitalized COVID-19 Patients: Independent Associations with Male Gender”

https://pubmed.ncbi.nlm.nih.gov/38112151

The study found that QRS fragmentation and arrhythmias in ECG, along with male gender, are independently associated with myocardial dysfunction after COVID-19 in nonhospitalized patients.