Remdesivir-Induced Extreme Sinus Bradycardia in COVID-19.

During the COVID-19 pandemic, there was an urgent need for any medication to help reduce the high death rate experienced during this deadly surge. Remdesivir is an FDA-approved drug for COVID-19 treatment, given its anti-inflammatory properties. Upon extensive literature search, we found two studies and four cases of COVID-19-induced pneumonia treated with remdesivir who were developing bradycardia. In most of these cases, the bradycardia resolved within one-to-two days of holding remdesivir, which correlated with the half-life of remdesivir. Remdesivir was shown to have benefits in COVID-19-induced pneumonia during the COVID-19 surge; however, its use has been controversial. According to the studies, the sinus bradycardia following remdesivir administration does not impact patients' prognosis in terms of ICU admission and in-hospital mortality. There are multiple case reports noted to report several remdesivir-induced cardiac side effects. In our case, prolonged use and high dosages may induce cardiotoxicity, manifesting as severe bradycardia. Several possible mechanisms for cardiac adverse effects with remdesivir need further investigation and research as COVID-19 remains an active global issue. We present a 53-year-old man hospitalized with COVID-19-induced pneumonia who experienced extreme sinus bradycardia that is likely attributable to remdesivir.