Introduction

Since December 8, 2019, an epidemic of coronavirus disease 2019 (COVID-19) has spread rapidly. There are more than 3,672,238 COVID-19 patients worldwide, with 254,045 deaths having been reported to date1. Deep venous thrombosis (DVT) has been reported to be as high as 31% in intensive care unit (ICU) patients with COVID-19 infections2. Moreover, fatal pulmonary embolization (PE) has been reported to be as high as 20.6% in severe ICU COVID-19 patients3. Inferior vena cava filter (IVCF) implantation is the recommended precautionary strategy for fatal PE among DVT patients 4. IVCF implantation is generally performed under X-ray or color ultrasound (US) guidance4. Ultrasound-guided IVCF implantation at the bedside is however more convenient and carries a lower risk of infection5. There is currently no guidance with respect to the preferred method of implantation during the current COVID-19 pandemic. Here, we present three confirmed cases of DVT-COVID-19 patients. All of them had reached IVCF implantation intervention indications. We performed IVCF implantation for the first patient under digital subtraction angiography (DSA) in the DSA operating room and for the other two, under bedside ultrasound in the COVID-19 isolation ward. All patients or their representatives have consented to the publication of details and images pertaining to the cases.