In general the signs and symptoms were milder than those for divers who had been to deeper depths. This is a four hour and 45 minute table, a fairly standard choice for a diver s first treatment. In short, the chamber is compressed to 18msw and the patient is placed on oxygen for 20 minutes followed by a five minute air break. This cycle is repeated two more times, then the chamber is decompressed to 9msw over 30 minutes with the patient on oxygen. Once at 9msw the patient gets a 15 minute air break.
Most patients require a number of followup treatments.
These are usually carried out at a treatment depth of 18msw for one hour. A diver generally needs three or four treatments. Looking through the few profiles noted above, some obvious risk factors can be noted. Analysis of all the dive profiles in the series revealed a worrying trend. It was noted in cases that were not single exposures that a number of risk factors were common.