Acid-base markers | Survivors (n = 5954) | Non-survivors (n = 924) | p valuea |
---|---|---|---|
1. Arterial pH | 7.35 (7.29–7.39) | 7.28 (7.17–7.37) | 0.001 |
2. Arterial CO2 tension, mmHg | 40 (35–45) | 40 (34–48.8) | 0.022 |
3. Actual bicarbonate conc., mmol/L | 21 (19–23) | 18 (14–21.8) | 0.001 |
4. Chloride conc., mmol/L | 110 (107–113) | 109 (105–114) | 0.891 |
5. Lactate conc., mmol/L | 1.5 (1.0–2.4) | 2.7 (1.4–5.6) | 0.001 |
6. Actual base excess, mmol/L | −3 (−6 to −1) | −7 (−12 to −3) | 0.001 |
7. Anion gap, mmol/L | 12.5 (10.1–15.0) | 15.0 (11.9–19.5) | 0.001 |
8. Anion gap albumin-corrected, mmol/L | 15.5 (12.8–18.5) | 18.7 (14.8–23.6) | 0.001 |
9. SIG with lactate, mmol/L | 4.2 (1.5–7.1) | 6.5 (3.0–10.8) | 0.001 |
10. SIG without lactate, mmol/L | 2.2 (−0.3 to 5.0) | 2.5 (−0.4 to 5.8) | 0.028 |
11. SID-effective, mmol/L | 33.5 (30.5–36.2) | 30.7 (26.7–34.7) | 0.001 |
12. Other unmeasured ions, mmol/L | 2.1 (−1.0 to 4.9) | −1.5 (−7.3 to 2.5) | 0.001 |