Table 3 Subgroup analysis according to body weight for each device. Since numbers in subgroup 1 are low statistical analysis was performed comparing subgroup 2 and 3 only

(5–9.9 kg)

(10–19.9 kg)

(20–30 kg)

LMA-S™

Number of patients

1

39

40

First attempt success, n (%)^a

1 (100)

39 (100)

40 (100)

Overall success, n (%)^a

1 (100)

39 (100)

40 (100)

Leak pressure - cmH₂O, median (IQR)^b

16

18 (16–19)

18 (16–20)

Insertion time - seconds, median (IQR)^b

21

24 (21–28)

22 (19–27)

Fiberoptic view, n (%)^c

0/0/1/0

(0/0/100/0)

9/15/7/2

(27/45/21/6)

18/14/2/0

(53/41/6/0)

Air-Q®

Number of patients

5

36

39

First attempt success, n (%)^a

5 (100)

33 (92)

34 (87)

Overall success, n (%)^a

5 (100)

33 (92)

35 (90)

Leak pressure - cmH₂O, median (IQR)^b

20 (17–22)

16 (15–18)

15 (12–17)

Insertion time - seconds, median (IQR)^b

17 (14–22)

21 (17–24)

20 (15–24)

Fiberoptic view, n (%)^c

2/1/1/0

(50/25/25/0)

10/9/0/1

(50/45/0/5)

14/4/3/0

(67/19/14/0)

Aura-i™

Number of patients

2

41

37

First attempt success, n (%)^a

2 (100)

38 (93)

33 (89)

Overall success, n (%)^a

2 (100)

40 (98)

34 (92)

Leak pressure - cmH₂O, median (IQR)^b

13; 20

18 (15–19)

18 (15–20)

Insertion time - seconds, median (IQR)^b

10; 28

19 (15–23)

25 (20–30)

Fiberoptic view, n (%)^c

1/0/0/0

(100/0/0/0)

5/17/5/0

(19/63/19/0)

16/7/0/0

(70/30/0/0)

p-values comparing the 3 SGA

First attempt success ^d

NA

0.21

0.05

Overall success ^d

NA

0.11

0.10

Fiberoptic view^d

NA

0.06

0.19

Leak pressure^e

NA

0.06

<0.001

Insertion time^e

NA

<0.001

0.007