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Table 1 Characteristics of patients, surgery, and anesthesia

From: Lung ultrasound score to determine the effect of fraction inspired oxygen during alveolar recruitment on absorption atelectasis in laparoscopic surgery: a randomized controlled trial

 

Low-Fio2 group (n = 44)

High-Fio2 group (n = 46)

P-value

Age (year)

49.5 (43.0–59.0)

54.5 (43.0–61.0)

0.508

Female, n

32 (72.7)

28 (60.9)

0.332

Height (cm)

158.5 (154.7–165.5)

161.4 (156.0–170.0)

0.184

Weight (kg)

61.7 (54.0–68.9)

60.5 (54.0–70.0)

0.987

Predicted body weight (kg)

52.0 (48.0–59.5)

54.0 (48.0–66.0)

0.140

Body mass index (kg m−2)

23.7 (21.8–26.2)

24.1 (21.0–25.9)

0.617

ASA classification (I/II), n

31/13

24/22

0.118

Comorbidity

 Hypertension, n

9 (20.5)

11 (23.9)

0.888

 Diabetes mellitus, n

3 (6.8)

7 (15.2)

0.351

 Current Smoker, n

4 (9.1)

7 (15.2)

0.572

ARISCAT score

23 (8–26)

19 (7–26)

0.322

Type of surgery

  

0.406

 Laparoscopic colorectal surgery, n

21 (47.7)

27 (58.7)

 

 Laparoscopic gynecologic surgery, n

23 (52.3)

19 (41.3)

 

Operative profiles

 Duration of anesthesia (min)

147.5 (107.5–195.5)

170.0 (115.0–230.0)

0.109

 Duration of surgery (min)

100.0 (70.0–140.0)

125.0 (85.0–180.0)

0.058

 Duration of Trendelenburg position (min)

70.0 (46.5–100.5)

80.0 (56.0–142.0)

0.054

 Intraoperative crystalloid administration (ml)

600.0 (500.0–875.0)

700.0 (400.0–1000.0)

0.484

 Estimated blood loss (ml)

65.0 (40.0–112.5)

100.0 (50.0–200.0)

0.145

 Urine output (ml)

130.0 (80.0–200.0) (n = 39)*

150.0 (85.0–265.0) (n = 43)*

0.111

 Intraoperative inotropic requirement, n

20.0 (45.4)

28.0 (60.9)

0.356

  1. Values are expressed as median (Interquartile range) or number (%). ASA, American Society of Anesthesiologists; ARISCAT, Assess Respiratory Risk in Surgical patients in Catalonia. *Urine output was measured in patients with Foley catheter