A new study suggests that lower rates of gas exchange in the lungs may contribute to impaired cognitive function (brain fog) in long COVID patients. Researchers at the University of Iowa evaluated the link between lung function and brain function using magnetic resonance imaging (MRI). The study found a correlation between impaired pulmonary gas exchange, decreased brain gray- and white-matter volumes, and increased cerebral blood flow.
The research team recruited 12 COVID-19 survivors with persistent symptoms such as shortness of breath and fatigue. They used MRI to assess lung and brain function, as well as lung-function tests and cognitive performance. The findings indicate a potential causative relationship between cognitive dysfunction and lung dysfunction, which could lead to new treatment strategies.
The study’s authors believe that improved gas exchange may be key to addressing cognitive symptoms in long COVID patients. If confirmed, this relationship could suggest a novel approach to treating brain fog tied to lung function impairment.
Source: https://www.cidrap.umn.edu/covid-19/sluggish-gas-exchange-lungs-may-be-involved-long-covid-brain-fog