What Researchers Did
A Tasmanian wilderness medicine physician described adjunctive HBOT treatment of grade 3-4 frostbite in a patient who presented 3 days after an 11-day wilderness expedition, alongside vasodilators and rheological agents.
What They Found
HBOT appeared to reduce the zone of ischaemic penumbra in both feet, potentially reducing the extent of digit amputation required. The patient retained more foot function than might otherwise have been expected from the degree of frostbite.
Canadian Relevance
No direct Canadian connection identified, though frostbite is highly relevant to the Canadian climate and wilderness medicine context.
Study Limitations
A single case report cannot establish HBOT efficacy for frostbite; optimal protocols and timing of treatment remain undefined.