COVID-19 patients, especially those requiring intensive care, sometimes seem to exhibit cardiac complications, such as arrhythmias and acute cardiac injury. Previous virus outbreaks, such as MERS-CoV, SARS-CoV, and H1N1 influenza, have also been linked to myocardial injury and cardiovascular disease. For example, many SARS-CoV patients exhibited sinus tachycardia, with some patients also undergoing cardiac arrest. For MERS-CoV, cardiac arrhythmias and hypotension were common complications patients reported. The influenza virus has been associated with many cardiovascular complications, including myocardial infarction and myocarditis. Thus, it is crucial to further investigate potential cardiac complications that may be related to COVID-19.