What Researchers Did
Researchers conducted a meta-analysis comparing death rates from carbon monoxide poisoning among hospitalized patients in North Korea (where HBOT is unavailable) against historical South Korean data from the 1960s–70s, stratified by HBOT use.
What They Found
North Korea's hospital fatality rate was 6.49%, which was 2.48 times higher than the rate in South Korean hospitals that used HBOT (2.62%), and nearly identical to South Korean hospitals from the same era that did not use HBOT (6.26%). HBOT access, not country or era, was the key differentiating factor in survival.
What This Means for Canadian Patients
Carbon monoxide poisoning is an OHIP-covered indication for HBOT in Ontario. This comparison illustrates what HBOT access means at the population level: cutting the death rate from CO poisoning by more than half. Canadians in cities with hyperbaric centers should expect access to this life-saving treatment in any serious CO poisoning case, such as from faulty gas heaters or vehicle exhaust exposure in closed spaces.
Canadian Relevance
Carbon monoxide poisoning is a covered OHIP indication for HBOT in Ontario. This meta-analysis directly quantifies the survival benefit of having access to HBOT for CO poisoning.
Study Limitations
Comparing North Korea's current data against South Korea's 1960s data introduces major confounds in overall medical care quality beyond just HBOT availability.