Clotting markers were significantly elevated in the blood of patients with Long COVID syndrome.
Patients with Long COVID syndrome continue to have higher measures of blood clotting.
According to a study conducted by the RCSI University of Medicine and Health Sciences, this may help explain their persistent symptoms, such as reduced physical fitness and fatigue.
Researchers examined 50 patients with symptoms of Long COVID syndrome to better understand if abnormal blood clotting is involved.
RSCI says "They discovered that clotting markers were significantly elevated in the blood of patients with Long COVID syndrome compared with healthy controls. These clotting markers were higher in patients who required hospitalisation with their initial COVID-19 infection, but they also found that even those who were able to manage their illness at home still had persistently high clotting markers."
The researchers observed that higher clotting was directly related to other symptoms of Long COVID syndrome, such as reduced physical fitness and fatigue.
Even though markers of inflammation had all returned to normal levels, this increased clotting potential was still present in Long COVID patients.
Higher measures of blood clotting in patients with #LongCOVID may help explain their persistent symptoms. https://t.co/ITIqxsE7hu
— RCSI (@RCSI_Irl) August 16, 2021
Dr. Helen Fogarty is a medical doctor and is also a PhD student at the Irish Centre for Vascular Biology at the RCSI.
She is the report's lead author, and joined Eoin Beatty on Tuesday's edition of Kildare Today.

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