COVID-19 causes recurrent blood clots in a man’s arm

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In a recent study published in the journal Viruses, 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 study is from Rutgers University. One author is Payal Parikh.

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% are 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, please read studies about your immune system can build lasting defense after COVID-19 and findings of high vitamin D levels may prevent COVID-19.

For more information about COVID and your health, please see recent studies about many people show new symptoms months after COVID-19 and results showing that 3 in 4 people with severe COVID-19 have this health problem.

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