Well, a lot of crying while his ears equalized, some puking (but that is pretty normal for my son while he is upset) and we got two dives in. I have been doing the dives with my son for his cerebral palsy to treat his spasticity, since my wifes first dive she can't get her ears to equalize yet. She has a sinus infection, so a bit of advice don't do a hyperbaric treatment with a head cold of any kind. My son is doing the dives fine in the loaner Vitaeris 320, I have read it will take 30 dives at least to see any results if any. We were curious about the oxygen content in the chamber with the room air and the oxygen concentrator running in the chamber, so we tested the escaping air from the pressure regulator valves and got a maximum of about 23.0 %. The meter I was using read about 20.5% in just ambient conditions. The oxygen concentrator has a nasal cannula that a child could breathe straight out of into their nose, but my son would have no part of that, so I had to just hold it near his mouth and hope for the best.
The last dive of the day my son would not sip a drink while the pressure was building, so he cried and cried until he puked. Luckily we packed a dish towel in the chamber with us, and pto ack the drinks we bring them in a Baggie, so we cleaned up, put everything in the Baggie and continued the dive. My son fell asleep pretty much immeadiately after. I fell asleep too while my wife was decompressing the chamber. Probably not a good idea, but I feel great during and after the dives, I just hope it is worth it for my son's health.
In an interesting note, an aquaintance of my wife and son is also treating their child in the hyperbaric chamber. I think this family's willingness to treat their child also reflects the desire to get some sort of 'cure' for CP. We made sure the family wanted to do the treatment on their own, and we did not change their desire to do the hyperbaric on their own thoughts and wishes. I felt it was important to not sway their opinion one way or another, and after I asked clearly a few times that it was their own decision to do the treatment, they did their first treatment successfully. Good luck to them.