Table 1 Patients’ characteristics

Male sex (%)

42 patients (60%)

Age (mean ± SD)

51.6 ± 18.2 years

Smoker

26 patients (37.1%)

Hypertension

10 patients (14.3%)

Diabetes mellitus

4 patients (5.7%)

Asymptomatic patients (%)

23 patients (33%)

Consciousness disorder on admission (%)

37 patients (53%)

Cardiopulmonary arrest (%)

3 patients (4%)

Hyperbaric oxygen therapy (%)

49 patients (70%)

Sequential disability (%)

15 patients (21%)

Deliberately carbon monoxide exposed patients (%)

20 patients (29%)

Carboxyhemoglobin level (%) (normal range 0.5–1.5)

21.8 ± 14.8

Troponin I (ng/ml) (normal range 0.00–0.09)

0.85 ± 3.36

Mean emergency department arrival time (min)

165 ± 148