Comparisons of the Pentax-AWS, Glidescope, and Macintosh Laryngoscopes for Intubation Performance during Mechanical Chest Compressions in Left Lateral Tilt: A Randomized Simulation Study of Maternal Cardiopulmonary Resuscitation
Table 2
Tracheal intubation in 15-degree left lateral tilt positions ().
15 degrees
MCL ( = 19)
GVL ( = 19)
AWS ( = 19)
value
MCL versus AWS
MAC versus GVL
AWS versus GVL
Intubation time (seconds)
TTI*
36.9
22.9
12.8
<0.001
<0.001
0.04
<0.001
(31.5–50.7)
(17.5–33)
(11.3–15.2)
TTV
16.5
4.9
5.8
<0.001
<0.001
<0.001
1.00
(12.8–26.3)
(4.2–13.5)
(4–7.6)
TTP
18
16.2
7.0
<0.001
<0.001
0.56
<0.001
(13.8–28)
(12.7–23.2)
(5.3–9.2)
Success rate (percent)
Success rate
14 (73.7)
18 (94.7)
19 (100)
0.04
Failure
Esophageal intubation
3 (15.8)
0 (0)
0 (0)
0.09
Intubation time >90 s
2 (10.5)
1 (5.3)
0 (0)
0.77
Cormack and Lehane score
I-II
7 (36.8)
17 (89.5)
19 (100)
<0.001
III-IV
12 (63.2)
2 (10.5)
0 (0)
Preference
0 (0)
6 (31.6)
13 (68.4)
1.00
Categorical variables are given as numbers (percentage). Continuous variables are given as median (IQR). MCL: Macintosh laryngoscope; AWS: Pentax-AWS; GVL: Glidescope. *Total time for tracheal intubation. Time to visualize glottis view. Time to progress the tracheal tube from exposure of vocal cords to first ventilation.
