I am a Clinical Nurse Manager for a large wound care organization. We mainly have techs do the HBO treatments but we have an RN on duty while the procedure is going on. To be honest, most HBO facilities have nurses to supervise while a tech does most of the leg work. We (nurses) don't really do anything special, mainly are present to problem solve if issues arise during the treatments. As a nurse unless you are diving in a large multi chamber you would not be doing much. If your specific company requires RNs to do the teching there will not be much to challenge you mentally and to further your practice in my honest opinion. Treatments take around 150 mins a day. Patients are required to come 5 days a week for a total of 20-30 treatments depending on the severity of their issue. Our center has 2 chambers so we can dive 4 people a day. Its a good job and a very specific field of nursing. So with specialized training you can be compensated well.