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COVID-19 Linked to Large Vessel Stroke in Young Adults

What your doctor is reading on Medscape.com:

APRIL 24, 2020 — Physicians in New York City, which still leads the nation in reported COVID-19 cases, are reporting significantly more acute, large vessel strokes in young adults infected with COVID-19.

In a rapid communication to be published online April 29 in the New England Journal of Medicine, investigators led by Thomas Oxley, MD, PhD, department of neurosurgery, Mount Sinai Health System, report five cases of large vessel stroke over a 2-week period in COVID-19 patients under age 50 years. This represents a sevenfold increase in what would normally be expected.

The five cases had either no, or mild, COVID-19 symptoms.

“It’s been surprising to learn that the virus appears to cause disease through a process of blood clotting,” Oxley told Medscape Medical News.

The message for neurologists and other physicians is “we’re learning that this can disproportionally affect large vessels more than small vessels in terms of presentation of stroke,” he said.

Inflammation in the blood vessel walls may be driving thrombosis formation, Oxley added. This report joins other research pointing to this emerging phenomenon.

Recently, investigators in the Netherlands found a “remarkably high” 31% rate of thrombotic complications among 184 critical care patients with COVID-19 pneumonia.

Oxley and colleagues also suggest that since the onset of the pandemic, fewer patients may be calling emergency services when they experience signs of a stroke. The physicians note that two of the five cases in the report delayed calling an ambulance.

“I understand why people do not want to leave the household. I think people are more willing to ignore other [non-COVID-19] symptoms in this environment,” he said.

As previously reported by Medscape Medical News, physicians in hospitals across the United States and elsewhere have reported a significant drop in stroke patients since the COVID-19 pandemic took hold, suggesting patients may indeed be foregoing emergency care.

The observations from Oxley and colleagues call for greater awareness of the association between COVID-19 and large vessel strokes in this age group, they add.

One patient in the case series died, one remains hospitalized, two are undergoing rehabilitation, and one was discharged home as of April 24.

Oxley and colleagues dedicate their report to “our inspiring colleague Gary Sclar, MD, a stroke physician who succumbed to COVID-19 while caring for his patients.”

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