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Table 1 Demographic variables of delirious and non-delirious patients

From: Absence of association between whole blood viscosity and delirium after cardiac surgery: a case-controlled study

Characteristic Delirious (N = 12) Non-delirious (N = 48) p-value
Age (years), (mean, SD) 69 (5.6) 65 (8.2) 0.16
Male, N (%) 8 (67 %) 36 (75 %) 0.56
Duration of surgery in minutes (mean, SD) 195 (73) 187 (50) 0.65
ECC-time (min), (mean, SD) 107 (43) 90 (21) 0.21
AOX-time (min), (mean, SD) 65 (22) 59.8 (17) 0.36
APACHE-II Score (mean, SD) 17 (4) 15 (4) 0.19
Euro score (mean, SD) 3.8 (2.0) 3.5 (2.0) 0.68
Serum creatinine level (μmol. L-1), (median, IQR) 87 (68–94) 81 (73–94) 0.72
MDRD-GFR (ml. min-1. 1.73 m-2), (median, IQR) 78 (59–90) 81 (64–90) 0.49
Urea level (mmol. L-1), (median, IQR) 8.0 (7.2–9.1) 7.3 (6.0–8.6) 0.20
Fluid balance (mL), (median, IQR) 909 (34–1171) 375 (-137–1121) 0.65
EF (%), (median, IQR) 60.0 (46.3–60.0) 55.0 (45.0–60.0) 0.40
MAP (mmHg), (median, IQR) 75 (68–77) 75 (71–83) 0.40
Admission of inotropes or vasopressors, N (%) 10 (83 %) 28 (58 %) 0.11
Duration of mechanical ventilation (≥24 h), N (%) 0 (0 %) 0 (0 %) N/A
PTT (sec), (median, IQR) 19 (18–21) 18 (18–19) 0.26
Diabetes mellitus, N (%) 0 (0 %) 5 (10 %) 0.83
Glucose level (mmol. L-1), (median, IQR) 7.9 (7.3–8.8) 7.6 (6.7–8.2) 0.36
Temperature (°C), (median, IQR) 36.6 (35.3–37.1) 36.6 (35.9–36.9) 0.93
Confirmed infection, N (%) 0 (0 %) 0 (0 %) N/A
  1. Definition of abbreviations: ECC extracorporeal circulation, AOX aortic cross clamp, min minutes, APACHE II acute physiology and chronic health evaluation II, Euro European system for cardiac operative risk evaluation, IQR interquartile range, MDRD-GFR modification of diet in renal disease-glomerular filtration rate, EF ejection fraction, MAP mean arterial blood pressure, N/A not applicable, PTT partial thromboplastin time, sec seconds, SD standard deviation