so were you treated in a REAL hyperbaric oxygen chamber that dives to 45 feet and was pressurized with pure oxygen, or was it one of the balloon ones that go to 14 feet and are pressurized with ordinary air and you breath oxygen through a mask in the chamber ... there’s a YUGE difference (and cost) ...
Real hyperbaric is called hard shell. My dad got it for an infected toe it worked. Golfers were there who had diabetes and did not want more toes cut off.
It was a tank like a submarine and I breathed inside a hood into which the oxygen was pumped. It took about 15 minutes to pressurize the chamber.
All I know is that it cured an infected wound that had persisted for a year despite heavy antibiotics.