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 3
Tracheal intubation in 30-degree left lateral tilt positions ().
30 degrees
MCL ( = 19)
GVL ( = 19)
AWS ( = 19)
value
MCL versus AWS
MCL versus GVL
AWS versus GVL
Intubation time (seconds)
TTI*
32.4 (22.6–47.1)
21 (16.2–31.2)
13.4 (12.4–16.2)
<0.001
<0.001
0.09
0.001
TTV
13.9 (9–23.9)
5.2 (4.0–8.9)
5.4 (4.7–8.2)
<0.001
<0.001
0.004
0.71
TTP
16.2 (13.6–21.8)
14.6 (12.3–18.6)
7.5 (6.3–9.9)
0.002
0.002
0.55
<0.001
Success rate (percent)
Success rate
9 (47.4)
17 (89.5)
18 (94.7)
0.001
Failure
Esophageal intubation
4 (21.1)
0 (0)
1 (5.3)
0.11
Intubation time >90 s
7 (36.8)
2 (10.5)
0 (0)
0.007
Cormack-Lehane score
I-II
5 (26.3)
18 (94.7)
19 (100)
<0.001
III-IV
14 (73.7)
1 (5.3)
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; GLS: 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.
