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Ain-Shams Journal of Anesthesiology

Table 4 Change of OLP and ventilation parameters with change in position

From: A randomized controlled study to compare oropharyngeal leak pressure between I-gel™ and laryngeal mask airway supreme™ in children in lateral position under general anesthesia

 

i-gel™ (n = 38)

LMA Supreme™ (n = 39)

Supine

Lateral

Mean difference

95% C.I

p value‡

Supine

Lateral

Mean difference

95% C.I

p value‡

OLP (cmH2O)

25.4 ± 1.4

23.9 ± 1.6

1.5

1.178–1.822

 < 0.001

22.9 ± 1.5

21.5 ± 1.5

1.4

0.999–1.72

 < 0.001

VTI [in ml] (mean ± SD)

57.5 ± 14.9

54.7 ± 14.9

2.8

1.37–4.3

0.002

58.7 ± 16.9

55.5 ± 18.6

3.2

1.755–4.60

 < 0.001

VTE [in ml]

(mean ± SD)

50.8 ± 14.4

47.5 ± 13.8

3.3

1.61–4.92

 < 0.001

52.8 ± 16.9

50.2 ± 17.9

2.5

0.956–4.12

0.002

FVL [in ml] (mean ± SD)

11.0 ± 5.5

12.3 ± 5.6

 − 1.3

 − 2.9–0.359

0.172

10.9 ± 4.9

10.2 ± 5.9

0.7

 − 1.23–2.59

0.281

  1. Values are expressed as mean ± SD or numbers with percentages
  2. OLP oropharyngeal leak pressure, FVL fractional volume loss, VTI tidal volume inspired, VTE tidal volume expired
  3. ‡Wilcoxon signed rank test p value
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