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Table 1 Patient characteristics according to postoperative fasting time

From: Postoperative fasting is associated with longer ICU stay in oncologic patients undergoing elective surgery

Patient characteristics Overall
n = 109
Fasting ≤ 24 h
n = 43
Fasting > 24 h
n = 66
P value
Age (years, mean ± standard deviation) 60.03 ± 15.2 58.81 ± 13.97 60.82 ± 16.09 0.478
Men (n; %) 57 (52.3) 25 (58.1) 32 (48.5) 0.429
Weight (kg; range) 73 (62–82.5) 73 (62–79) 73 (62–86) 0.91
BMI (kg/m2, mean ± standard deviation) 26.91 ± 5.7 26.76 ± 4.83 27.00 ± 6.2 0.831
SAPS3 (mean ± standard deviation) 43.6 ± 12.09 39.4 ± 9.42 46.48 ± 12.8 0.01
SOFA (n; range) 3 (1–6) 2 (1–4) 4 (1–7) 0.02
NUTRIC (n; range) 2 (2–4) 2 (1–3) 3 (2–4) 0.07
Malnutrition (n; %) 36 (38.3) 15 (39.51) 21 (37.5) 1.000
CC (cm; mean ± standard deviation) 35.6 ± 4.12 35.87 ± 3.4 35.55 ± 4.5 0.680
Charlson (n; range) 3 (2–6) 2 (2–6) 3 (2–6) 0.22
Ischemic heart disease (n; %) 11 (10.6) 5 (11.6) 6 (9.1) 0.75
Cardiac failure (n; %) 6 (5.5) 0 (0.0) 6 (9.1) 0.79
Diabetes (n; %) 21 (19.3) 8 (18.6) 13 (19.7) 1.00
Hypertension (n; %) 38 (34.9) 16 (37.2) 22 (33.3) 0.834
COPD (n; %) 9 (8.3) 2 (4.7) 7 (10.6) 0.478
Smoking (n; %) 26 (23.9) 11 (25.6) 15 (22.7) 0.911
Alcoholism (n; %) 8 (7.3) 3 (7.0) 5 (7.6) 1.00
Liver disease (n; %) 2 (1.8) 2 (4.7) 0 (0.0) 0.153
HIV (n; %) 2 (1.8) 1(2.3) 1 (1.5) 1.00
Other comorbidities (n; %) 39 (35.8) 16 (37.2) 23 (34.8) 0.963
Pre-fasting (h; range) 8 (7.7–10.5) 8 (8–13) 8 (7.5–9.62) 0.856
Post-fasting (h; range) 30 (20.7–46) 19.5 (15.5–22) 45 (31–63.12) 0.000
Total fasting (h; range) 42 (34.5–60.5) 34 (32–36) 58 (46–81) 0.000
Primary tumor (n; %) 71 (65.1) 28 (65.1) 43 (65.2) 1.00
Metastases (n; %) 57 (52.3) 21 (48.8) 36 (54.5) 0.69
Chemotherapy (n; %) 45 (41.3) 17 (39.5) 28 (42.4) 0.92
Radiotherapy (n; %) 21 (19.3) 5 (11.6) 16 (24.2) 0.166
Re-intervention (n; %) 11(10.1) 2 (4.7) 9 (13.6) 0.195
RRT (n; %) 6 (5.5) 1 (2.3) 5 (7.6) 0.4
Mechanical ventilation (n; %) 43 (39.4) 1 (23.3) 33 (50) 0.010
Noradrenaline (n; %) 28 (25.7) 9 (20.9) 19 (28.8) 0.000
Another vasopressor (n; %) 11 (10.1) 0 (0.0) 11 (16.7) 0.003
  1. Abbreviations: SAPS3 simplified acute physiology score 3, SOFA sequential organ failure assessment, NUTRIC nutrition risk in critically ill, BMI body mass index, CC calf circumference, COPD chronic obstructive pulmonary disease, HIV acquired immunodeficiency syndrome, RRT renal replacement therapy