All therapy can be considered in the evolving science of long Covid. My approach is to understand the principles of the science.
Robbins, Tim, et al. "Hyperbaric oxygen therapy for the treatment of long COVID: early evaluation of a highly promising intervention." Clinical Medicine 21.6 (2021): e629.
In my opinion, the indication for tissue oxygen depletion is through elevated levels of VEGF. Could that be a correlation, but not causation?
Fundamental pathophysiology has to be addressed.
Hyperbaric Oxygen therapy in long Covid. Does it make sense?