Conclusions
due to the concerns around the COVID-19 pandemic era, misdiagnosis can occur in cardiovascular disorders with COVID-19 infection. In this case, the attempt to be alert in the diagnosis and empiric treatment of COVID-19, resulted in the misdiagnosis. Even though the CT scan and RT-PCR results showed no evidence in the favor of COVID-19, the symptoms of the patient and the TEE results were thought to be related to the thrombosis of the prosthetic valve caused by the infection. Although we need to be vigilant in the diagnosis of COVID-19, we should not forget about the other possible disorders.