COVID-19 can trigger recurrent blood clots in arms, study finds

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In a new study from Rutgers University, researchers report the first instance of COVID-19 triggering a rare recurrence of potentially serious blood clots in people’s arms.

The discovery improves the understanding of how inflammation caused by COVID-19 can lead to upper extremity blood clots and how best to treat them.

The case study is part of a larger Rutgers study of 1,000 hospitalized patients diagnosed with COVID-19 who were admitted and discharged between March and May 2020.

While there have been reports of lower extremity deep vein thrombosis following COVID-19, this is the first study in which COVID-19 triggered a recurrence in the upper arm of an active 85-year-old man who had a prior diagnosis of upper extremity blood clots.

In the study, the patient presented to his primary care physician with complaints of swelling in his left arm and was sent to the hospital for further management where he was diagnosed with an upper arm blood clot and an asymptomatic COVID-19 infection.

While his oxygen levels were not diminished, he was hospitalized for the management of the upper extremity deep vein blood clot.

Often, blood clots are preceded by chronic inflammatory conditions exacerbated by immobility, and rarely do they occur in patients who are otherwise healthy and active at baseline.

Most cases of deep vein thrombosis occur in the legs. Only about 10% of blood clots occur in the arms and of those cases, only 9% recurring.

The team says this is of concern since in 30% of these patients, the blood clot can travel to the lung and be possibly fatal. Other disabling complications include persistent swelling, pain and arm fatigue.

The study suggests that clinicians should consider testing for deep vein thrombosis and COVID-19 in patients who present with complaints of unexplained swelling.

People who test positive for COVID-19 should seek medical attention if they have declining oxygen levels, shortness of breath and any unexplained swelling.

If you care about COVID-19, please read studies about this common drug could almost halve COVID-19 death risk and findings of two root causes of severe COVID-19.

For more information about COVID-19 prevention and treatment, please see recent studies about common cholesterol-lowering drug may strongly reduce COVID-19 infection and results showing that two vitamins and this common drug may help fight COVID-19.

The study is published in the journal Viruses. One author of the study is Payal Parikh.

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