Table 1 The point-of-care results for the analyses of IO1 (initial intraosseous sample), IO2 (second intraosseous sample after 2 ml of waste blood), arterial blood, and venous blood

Na (mmol/l)

132 (123–137) n = 29

131.5 (125–138) n = 30

138 (131–140)

138 (132–142)

K (mmol/l)

5.8 (4.0–7.7) n = 27

6.9 (4.5–8.8) n = 26

3.7 (3.5–4.2)

3.7 (3.3–4.2)

iCa (mmol/l)

1.12 (0.95–1.2) n = 29

1.07 (0.91–1.24) n = 30

1.21 (1.13–1.26)

1.23 (1.18–1.3)

pH

7.420 (7.363–7.614) n = 29

7.433 (7.379–7.679) n = 30

7.408 (7.356–7.789)

7.377 (7.298–7.463)

BE (mmol/l)

1.0 (−3.0–5.0) n = 29

1.0 (−3.0–6.0) n = 30

−1.0 (−6.0–9.0)

−1.0 (−5.0–4.0)

HCO₃ (mmol/l)

25.1 (20.9–29.3) n = 29

25.0 (20.7–30.6) n = 30

22.6 (18.0–27.8)

24.4 (20.8–28.7)

pO₂ (kPa)

7.35 (4.7–13.4) n = 28

7.55 (4.1–13.7) n = 30

12.35 (9.5–15.5) n = 30

4.3 (2.6–10.5)

pCO₂ (kPa)

5.12 (2.97–6.16) n = 29

4.96 (2.44–6.16) n = 30

4.82 (2.25–5.36)

5.55 (4.07–7.29)

Hb (g/l)

153 (68–204) n = 28

139.5 (92–190) n = 30

153 (116–228)

150 (119–241) n = 30

Hct (%)

45 (20–60) n = 28

41 (27–56) n = 30

45 (34–67)

44 (35–71)

Gluc (mmol/l)

5.5 (4.4–7.0) n = 27

5.5 (4.6–6.8) n = 29

5.5 (4.4–7.0)

5.4 (3.8–6.6)

Lact (mmol/l)

1.03 (0.58–2.42) n = 26

1.04 (0.68–2.11) n = 26

1.15 (0.56–2.0) n = 30

1.44 (0.74–2.58)