Preventing dangerous blood clots in COVID-19 patients

Drs. Marc Carrier, Lana Castellucci and colleagues are contributing to an international clinical trial  to find out whether a high dose of blood thinner can prevent dangerous blood clots in hospitalized COVID-19 patients. About 60 percent of these patients develop blood clots, which can be deadly if they travel to the lungs. Not only can blood thinners prevent clots, there is some evidence that they may also alter the course of a COVID-19 infection by interfering with the ability of the virus to latch onto and invade human cells. Patients hospitalized with COVID-19 already receive a low dose of blood thinner as part of their normal care. The researchers will test whether a higher dose can reduce death, transfer to intensive care or the need for mechanical ventilation. The team will also look at how the treatment affects blood clots and major bleeding. This study will immediately impact the clinical care of patients with severe COVID-19 in 13 sites across Canada as well as at sites in the United States and Europe.