What’s already known about this topic?
It was also reported that pulmonary function tests performed at
discharge revealed no significant difference in forced expiratory volume
in the first second (FEV1) or forced vital capacity (FVC) values between
COVID-19 patients with mild, moderate, and severe pneumonia, whereas
diffusion capacity decreased in correlation with disease severity.
Pulmonary function testing is often not recommended for patients with
active COVID-19 infection in order to prevent excessive transmission.
However, despite clinical improvement in this patient group, ongoing
hypoxia and persistent radiological findings cause considerable
difficulty in predicting the extent of improvement in pulmonary
function.