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  • Title: Safe administration of hyperbaric oxygen after bleomycin: a case series of 15 patients.
    Author: Torp KD, Carraway MS, Ott MC, Stolp BW, Moon RE, Piantadosi CA, Freiberger JJ.
    Journal: Undersea Hyperb Med; 2012; 39(5):873-9. PubMed ID: 23045915.
    Abstract:
    INTRODUCTION: Supplemental oxygen has been reported to cause pulmonary complications after bleomycin. We describe the safe administration of hyperbaric oxygen (HBO2) after bleomycin in 15 patients. METHODS: Paper and electronic records were reviewed for bleomycin-exposed patients at the Duke Center for Hyperbaric Medicine and Environmental Physiology from 1979 to 2010. RESULTS: Fourteen bleomycin-exposed patients received HBO2 at Duke under a special-precautions protocol. One was treated for DCS elsewhere. The protocol included: pretreatment evaluation; chest radiograph; spirometry; blood gases; a single, 2-atmospheres absolute (atm abs), 120-minute HBO2 treatment; and a gradual acceleration over one week to a twice-daily schedule contingent on clinical and laboratory findings. Bleomycin indications were: head-and-neck squamous cell carcinomas (11), Hodgkin's lymphoma (2), other carcinomas (2). HBO2 indications were: osteoradionecrosis (10), soft-tissue radionecrosis (3), DCS (1) and a provocative oxygen toxicity test for a military aviator (1). Total bleomycin doses ranged from 40 to 225u/m2 (mean +/- SD, 105 +/- 57) given in conjunction with other chemotherapies and/or radiation. Radiation was 63.3 +/- 31.72 Gy (mean +/- SD), none to the chest with the exception of one patient treated for DCS elsewhere. Other chemotherapies included: vinblastine (11), methotrexate (11), CCNU (6) cisplatinum (7), dacarbazin (2), Adriamycin (1), and vincristine (1). Median age at time of HBO2 was 52 years (range 22-77). Median bleomycin-to-HBO2 latency was 34 months (range 1-279). Three patients received HBO2 within six months, and seven patients received HBO2 within two years of their last bleomycin exposure. There were no adverse pre-to-post HBO2 changes in: arterial blood gases, spirometry, chest radiograph findings or clinical reports. There were no persistent post-HBO2 pulmonary complications on follow-up. Post-HBO2 data were available for 40%, 53%, 87% and 100% of these parameters respectively. DISCUSSION: Bleomycin and oxygen can individually cause acute pulmonary toxicity. However, evidence for increased long-term susceptibility based on their synergy may be overstated.
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