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Table 1 Demographic and perioperative characteristics for 35 patients undergoing surgery for ovarian cancer

From: Influence of perioperative oxygen fraction on pulmonary function after abdominal surgery: a randomized controlled trial

  FiO2 = 0.30 FiO2 = 0.80
  (n = 15) (n = 20)
Age (years) 59 ± 16 64 ± 13
Body mass index (kg/m2) 23 ± 4 27 ± 8
Body weight (kg) 66 ± 15 72 ± 19
Smoking status   
Previous smoker 1 (8%) 3 (17%)
Current smoker 5 (33%) 6 (30%)
ASA physical status I/II/III 5/8/2 4/12/4
Co-existing diseases   
Hypertension 6 (40%) 12 (60%)
Other cardiovascular disease 1 (7%) 5 (25%)
Respiratory disease 1 (7%) 1 (5%)
Preoperative hemoglobin (mmol/l)   
  7.8 ± 0.7 7.6 ± 0.7
Amount of ascites   
< 50 mL 9 (60%) 13 (65%)
50-999 mL 3 (20%) 1 (5%)
1000-2999 mL 3 (20%) 1 (5%)
≥ 3000 mL 0 - 5 (25%)
Epidural analgesia 14 (93%) 14 (70%)
Morphine dose (mg)* 5 [0–10] 0 [0–6]
Duration of FIO2 = 1.0 (min) 14 [13–16] 15 [13–17]
Duration of anesthesia (min) 179 [140–282] 154 [118–256]
Blood loss (mL) 600 [355–1200] 575 [75–1385]
Crystalloid infused (mL) 2000 [1220–2500] 1735 [1160–3500]
Colloid infused (mL) 500 [0–1000] 500 [500–1020]
Patients receiving blood 6 (40%) 5 (25%)
Units of blood transfused 2 ± 1 4 ± 2
Ephedrine dose (mg) 30 [0–30] 30 [10–48]
Other vasopressors 7 (47%) 8 (40%)
  1. The data are presented as mean ± SD, number of patients (percentage) or median [interquartile range].
  2. FiO2 = inspired oxygen fraction; ASA = American Society of Anesthesiologists.
  3. * Total morphine dose received 2 h postoperatively, including equivalent doses of fentanyl.