Of 8 patients with symptoms of advanced cystitis due to pelvic radiation treated with hyperbaric oxygen 7 are persistently improved during followup. All 6 patients treated for gross hematuria requiring hospitalization have been free of symptoms for an average of 24 months (range 6 to 43 months). One patient treated for stress incontinence currently is dry despite little change in bladder capacity, implying salutary effect from hyperbaric oxygen on the sphincter mechanism. One patient with radiation-induced prostatitis failed to respond. This experience suggests that hyperbaric oxygen should be considered the primary treatment for patients with symptomatic radiation-induced hemorrhagic cystitis.

Weiss, Neville, , , , , , , (1989). Hyperbaric oxygen: primary treatment of radiation-induced hemorrhagic cystitis. The Journal of urology, 1989 Jul;142(1):43-5. https://www.ncbi.nlm.nih.gov/pubmed/2733107