Research uncovered an increased risk of pulmonary embolism (a blood clot in the lung) up to six months after covid-19 infection, deep vein thrombosis (a blood clot in the leg) up to three months, and a bleeding event up to two months. The study from Sweden was published by The BMJ. According to t
Research uncovered an increased risk of pulmonary embolism up to six months after covid-19 infection, deep vein thrombosis up to three months, and a bleeding event up to two months. The study from Sweden was published byAccording to the findings, there is also a higher risk of events in patients with underlying conditions , patients with more severe covid-19, and during the first pandemic wave compared with the second and third waves.
To address these uncertainties, scientists set out to measure the risk of deep vein thrombosis, pulmonary embolism, and bleeding after covid-19.SARS-CoV-2 In the second analysis, they calculated the rates of deep vein thrombosis, pulmonary embolism, and bleeding during the period 1-30 days after covid-19 diagnosis in the covid-19 group and compared them to the corresponding rates in the control group.
In absolute terms, this means that a first deep vein thrombosis occurred in 401 patients with covid-19 and 267 control patients . A first pulmonary embolism event occurred in 1,761 patients with covid-19 and 171 control patients , and a first bleeding event occurred in 1,002 patients with covid-19 and 1,292 control patients .
This is an observational study, so the researchers cannot establish cause, and they acknowledge several limitations which might have affected their findings. For example, VTE may have been underdiagnosed in patients with covid-19, testing for covid-19 was limited, especially during the first pandemic wave, and information on vaccination was not available.
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