Covid patients with blood thinning drugs less likely to die: Study

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Covid patients with blood thinning drugs less likely to die: Study

Saturday, 13 February 2021 | PNS | New Delhi

Patients given preventive blood thinning drugs (prophylactic anticoagulants) within 24 hours of admission to hospital with Covid-19 are less likely to die compared with those who do not receive them, a study published by The British Medical Journal has found.

Clinical trials are now underway to see if prophylactic anticoagulants could be an effective treatment for covid-19. In the meantime, the researchers say these findings provide strong real world evidence to support their early use among patients in hospital with covid-19.

Some covid deaths are believed to be due to blood clots developing in major veins and arteries. Anticoagulants prevent blood clots forming and have antiviral and potentially anti-inflammatory properties, so might be particularly effective in patients with covid-19, but results from previous studies have been inconclusive.

Their findings are based on data from the United States Department of Veterans Affairs for 4,297 patients (average age 68 years; 93% men) admitted to hospital with covid-19 between 1 March and 31 July 2020.

Other potentially important factors including age, ethnicity, underlying conditions, medication history, weight, and smoking status were taken into account. The researchers then followed these patients to see who died or experienced a serious bleeding event within 30 days of hospital admission.

A total of 3,627 (84.4%) of patients received prophylactic anticoagulation within 24 hours of admission and there were 622 deaths (14.5%) within 30 days.

Death at 30 days was 14.3% among those who received prophylactic anticoagulation compared with 18.7% among those who did not - a relative risk reduction as high as 34% and an absolute risk reduction of 4.4%.

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