Massive biventricular thrombi complicating new-onset heart failure in a patient with suspected COVID-19.

The World Health Organization nominated SARS-CoV-2 as the cause of the Coronavirus Disease 2019 (COVID-19) and has been granted as a pandemic. COVID-19 is an emerging threat due to the risk of microvascular, venous, and arterial thrombosis, thereby exacerbating organ injury and mortality. Although the exact mechanism of extensive thromboembolism and myocardial injury caused by SARS-CoV-2 is not illuminated, it is clear that COVID-19 related hypercoagulation increasing the fatality of the disease. Herein, we reported a patient with extensive biventricular thrombi along with the new-onset severe systolic dysfunction as an unusual catastrophic presentation of COVID-19. In our patient, there was both a right atrial "clot in transit" from his DVT as well as extensive muralized biventricular thrombus from severe global hypokinesis. We believe that the hypercoagulable state of his COVID-19 infection, along with severe systolic dysfunction, caused this unusual presentation. Although the hypercoagulable state of COVID-19 is well recognized, there have not been any reported cases of extensive de-novo intracardiac thrombus as of yet. We urge awareness of severe and potentially fatal extensive thrombosis and cardiac failure as the initial clinical presentation of possible SARS-CoV-2. < Thrombotic manifestations are correlated with the high mortality rate in COVID-19; thus, strategies to prevent thrombosis have critical importance. The hypercoagulable state of COVID-19, along with cardiac injury, can lead to an extensive intracardiac thrombus and severe systolic dysfunction even in young patients who don't have previous cardiovascular comorbidities. We urge awareness of severe and potentially fatal extensive thrombosis and cardiac failure as the initial clinical presentation of COVID-19.>.