Variability in Treatment for Carbon Monoxide Poisoning in Japan: A Multicenter Retrospective Survey

Table 3

Indications for HBO₂ therapy in patients with CO poisoning at 33 institutions.

	Number	%
Consciousness disturbance on arrival	19	58
Exposure to CO for > 12 hours	17	52
CO-Hb ≥ 10%	11	33
CO-Hb ≥ 20%	9	27
All cases	8	24
Other	5	15

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