Table 1.
Patient characteristics and hyperlactataemia.
| Surgery type | N (M/F) | BMI, median (range) (kg m−2) | Age, median (range) (yr) | Mean lactate >2 mM first 12 h, N (%) | Mean lactate >2 mM first 24 h, N (%) | Mean lactate >2 mM first 48 h, N (%) | Critical care LOS, range (day) | Hospital LOS, range (day) |
|---|---|---|---|---|---|---|---|---|
| Thoracic | 59 (21/38) | 26 (19–40) | 68 (44–83) | 8 (14) | 4 (7) | 4 (7) | 1–18 | 2–58 |
| Head and neck | 67 (40/27) | 26 (21–36) | 68 (47–81) | 19 (28) | 13 (19) | 6 (9) | 1–31 | 3–89 |
| General | 31 (19/12) | 28 (19–49) | 67 (52–81) | 6 (19) | 4 (13) | 3 (10) | 1–15 | 2–35 |
| Upper gastrointestinal tract | 143 (94/49) | 26 (16–45) | 68 (40–89) | 11 (8) | 15 (10) | 11 (8) | 1–105 | 5–159 |
| Hepato-pancreato-biliary | 123 (77/46) | 26 (15–44) | 68 (26–84) | 34 (28) | 26 (21) | 15 (12) | 1–35 | 3–75 |
| Colorectal | 146 (91/55) | 27 (16–48) | 71 (41–87) | 32 (22) | 28 (19) | 26 (18) | 1–45 | 2–133 |
| Endocrine | 4 (4/0) | 31 (28–37) | 64 (60–70) | 1 (25) | 1 (25) | 1 (25) | 1–5 | 6–14 |
| Vascular | 282 (224/58) | 27 (16–40) | 72 (47–90) | 46 (16) | 38 (13) | 24 (9) | 1–37 | 1–75 |
| Urology | 158 (114/44) | 28 (16–46) | 68 (50–90) | 47 (30) | 36 (23) | 31 (20) | 1–37 | 1–75 |
| Gynae | 62 (0/62) | 31 (19–61) | 72 (44–85) | 14 (23) | 11 (18) | 10 (16) | 1–8 | 1–128 |
| High risk | 298 (204/94) | 26 (15–45) | 67 (26–89) | 82 (28) | 66 (22) | 40 (13) | 1–102 | 1–102 |
| Medium risk | 777 (498/279) | 27 (16–61) | 71 (41–90) | 157 (20) | 121 (16) | 97 (12) | 1–105 | 1–176 |
Groups are displayed by surgical specialty and risk category of surgery and include sex, age, BMI, and length of stay (LOS) in addition to percentage of patients with hyperlactataemia (>2 mM) in the first 12, 24, and 48 h after surgery.