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Post-COVID Risk for Blood Clot Lasts at Least 6 Months

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By Robert Preidt HealthDay Reporter
HealthDay Reporter

THURSDAY, April 7, 2022 (HealthDay Information) — COVID-19 will increase folks’s danger of harmful blood clots and bleeding for months after an infection, researchers say.

The brand new findings counsel that COVID-19 is an impartial danger issue for deep vein thrombosis, pulmonary embolism and bleeding.

“Our findings arguably assist [treatment] to keep away from thrombotic occasions, particularly for high-risk sufferers, and strengthen the significance of vaccination towards COVID-19,” the examine authors concluded within the report revealed April 6 within the BMJ.

Whereas the added danger of clots and bleeding was recognized, it was unclear how lengthy it lasted, the researchers famous in a journal information launch.

To seek out out, the investigators in contrast multiple million folks in Sweden who examined constructive for COVID-19 between Feb. 1, 2020, and Might 25, 2021, and a management group of greater than 4 million individuals who didn’t have a constructive COVID take a look at.

In comparison with the management group, COVID-19 sufferers had a considerably larger danger of deep vein thrombosis, or DVT, (a blood clot within the leg) for as much as three months after an infection; pulmonary embolism (a blood clot within the lung) for as much as six months; and a bleeding event for as much as two months.

After accounting for various probably vital elements, the researchers concluded that these with COVID-19 had a 5 instances’ larger danger of DVT; a 33-fold larger danger of pulmonary embolism; and an almost doubled danger of bleeding within the 30 days after an infection.

Deep vein thrombosis occurred in 0.04% of COVID-19 sufferers and 0.01% of management sufferers. Pulmonary embolism occurred in 0.17% of COVID-19 sufferers and 0.004% of management sufferers. And bleeding occasions occurred in 0.10% of COVID-19 sufferers and 0.04% of management sufferers, in keeping with the report.

The dangers of blood clots and bleeding have been highest in sufferers whose COVID-19 was extra extreme, these with different well being situations and people contaminated in the course of the first wave fairly than within the second and third waves. The researchers mentioned that might be defined by improved remedy and vaccine protection in older sufferers after the primary wave.

Even sufferers with delicate COVID-19 had an elevated danger of DVT and pulmonary embolism, the examine discovered. Whereas no elevated danger of bleeding was present in these with delicate COVID, there was a noticeable improve in sufferers with extra extreme an infection.

The examine was led by Anne-Marie Fors Connolly of the division of scientific microbiology at Umeå College in Sweden.

Frederick Ho of the Institute of Well being and Wellbeing on the College of Glasgow in Scotland and his colleagues wrote an editorial that accompanied the findings.

Despite the fact that many nations are eradicating pandemic restrictions and shifting their focus to dwelling with COVID-19, this examine “reminds us of the necessity to stay vigilant to the problems related to even delicate SARS-CoV-2 an infection, together with thromboembolism,” Ho’s group wrote.

Extra data

There’s extra on COVID-19 and the blood on the U.S. Nationwide Coronary heart, Lung, and Blood Institute.

SOURCE: BMJ, information launch, April 6, 2022