Table 2.
Comparison of laboratory findings between the IHCA and non-IHCA groups.
| Variables | Total Patients (n = 887) |
Non-IHCA Group (n = 663) |
IHCA Group (n = 224) |
p-Value a |
|---|---|---|---|---|
| White blood cell, ×103/L | 10.6 (4.3–19.2) | 11.3 (5.3–20.0) | 8.15 (2.3–17.4) | 0.191 |
| Hemoglobin, g/dL | 11.2 (9.4–13.0) | 11.3 ± 2.8 | 11.1 ± 2.8 | 0.196 |
| Platelets, ×103/L | 140 (70–213) | 147 (78–222) | 120 (50–138) | 0.015 |
| Sodium, mmol/L | 135 (131–138) | 135 (131–138) | 135 (130–138) | 0.930 |
| Potassium, mmol/L | 4.2 (3.7–4.8) | 4.1 (3.7–4.7) | 4.4 (3.8–5.0) | 0.170 |
| Chloride, mmol/L | 99 (95–103) | 99 (95–103) | 99 (94–103) | 0.578 |
| Creatinine, mg/dL | 1.6 (1.1–2.7) | 1.5 (1.0–2.6) | 1.9 (1.3–3.0) | 0.032 |
| AST, U/L | 47 (29–97) | 46 (29–92) | 49 (28–133) | 0.018 |
| ALT, U/L | 30 (17–62) | 30 (18–62) | 28 (17–62) | 0.096 |
| Albumin, g/dL | 2.6 (2.2–3.1) | 2.7 (2.2–3.2) | 2.8 (1.9–2.8) | 0.423 |
| Total bilirubin, mg/dL | 1.2 (0.7–2.5) | 1.3 (0.8–2.5) | 1.2 (0.7–2.5) | 0.128 |
| Prothrombin time, INR | 1.31 (1.15–1.58) | 1.29 (1.14–1.53) | 1.41 (1.21–1.77) | 0.982 |
| CRP, mg/dL | 13.2 (4.9–23.17) | 11.8 (4.2–21.6) | 16.7 (7.1–25.7) | <0.001 |
| Procalcitonin, mmol/L | 15.8 (3.1–44.0) | 15.8 (3.2–45.6) | 15.8 (2.7–38.3) | 0.341 |
| D-dimer, mcg/mL | 5.3 (2.7–12.0) | 5.1 (2.5–11.6) | 6.5 (3.2–13.9) | 0.810 |
| Troponin-I, ng/mL | 0.05 (0.02–0.16) | 0.05 (0.01–0.15) | 0.05 (0.02–0.18) | 0.613 |
| pH | 7.42 (7.34–7.47) | 7.43(7.35–7.47) | 7.38(7.24–7.46) | 0.327 |
| PCO2, mmHg | 27 (22–33) | 27 (22–32) | 28 (22–33) | 0.422 |
| PO2, mmHg | 75 (60–92) | 75 (62–92) | 72 (57–92) | 0.922 |
| Bicarbonate, mmol/L | 18 (14–22) | 19 (15–22) | 17 (12–21) | <0.003 |
| Initial lactate, mmol/L | 4.6 (3.1–7.2) | 4.4 (3.0–6.3) | 6.1 (3.6–9.7) | <0.001 |
| Lactate after 6 h, mmol/L | 3.9 (2.4–5.9) | 3.4 (2.2–5.0) | 5.7 (3.1–9.2) | <0.001 |
| Lactate normalization in 6 h | 152 (17.1) | 128 (19.3) | 24 (10.7) | <0.001 |
a The p-value of this table was calculated from chi-square test or Fisher’s exact test for categorical variables and student T-test or Mann–Whitney U test for continuous variables. Values are expressed as mean ± standard deviation, median (interquartile range), or number (%). : Statistically significant p-values are indicated in bold. Abbreviations: AST, aspartate aminotransferase; ALT, alanine transaminase; INR, international normalized ratio; CRP, C-reactive protein; PO2, partial pressure of oxygen; PCO2, partial pressure of carbon dioxide.