Capillaries are the smallest blood vessels in the body . These capillaries are very narrow due to which the red blood cells need to pass through them in a single fine line.
A blood clot in a COVID-19 patient can also affect the capillaries and due to the presence of these tiny clots in capillaries a condition is seen called “COVID toes”. These tiny clots can be dangerous.
In patients with the COVID-19 pneumonia condition, there is difficulty in breathing due to the inflammation and fluid buildup as these tiny clots in the capillaries inside the tiny air sacs of the lungs can restrict the blood flow leading to decreased oxygen levels.