Table 3 Intraoperative characteristics.

From: Open-lung strategies and mechanical power during protective ventilation for laparoscopic anterior resection: a randomised controlled trial

 

PARM

(n = 25)

PEEP

(n = 25)

Combination

(n = 25)

P value

Duration of surgery (min)

206 ± 91

206 ± 56

165 ± 57

0.064

Duration of surgery > 3 h

13 (52.0)

17 (68.0)

8 (32.0)

0.048

Duration of mechanical ventilation (min)

231 ± 89

235 ± 56

192 ± 58

0.058

Duration of pneumoperitoneum (min)

156 ± 75

155 ± 52

127 ± 47

0.146

Antagonistic muscle relaxant

17 (68.0)

12 (48.0)

13 (52.0)

0.342

Gastric tube insertion

2 (8.0)

0 (0.0

2 (8.0)

0.537

Prophylactic antibiotics

25 (100.0)

25 (100.0)

25 (100.0)

NA

pneumoperitoneum

25 (100.0)

25 (100.0)

25 (100.0)

NA

Trendelenburg position

25 (100.0)

25 (100.0)

25 (100.0)

NA

Patient controlled intravenous analgesia

25 (100.0)

25 (100.0)

25 (100.0)

NA

Urine output (ml)

400 [200 to 650]

350 [200 to 500]

300 [200 to 450]

0.307

Blood loss (ml)

50 [20 to 50]

50 [40 to 50]

50 [20 to 50]

0.272

Blood loss > 100 ml

5 (20.0)

5 (20.0)

4 (16.0)

1.000

Volume of fluids administered (ml)

3015 [2585 to 3350]

2600 [2600 to 3225]

2800 [2600 to 3150]

0.800

Crystalloid (ml)

2100 [1900 to 2450]

2100 [1950 to 2475]

2100 [1700 to 2600]

0.930

Blood products infusion

5 (20.0)

2 (8.0)

1(4.0)

0.257

  1. Values are the frequencies (percentage), mean ± standard deviation or median [interquartile]. NA, no analysis; PARM, periodic alveolar recruitment manoeuvre; PEEP, positive end-expiratory pressure.