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. Author manuscript; available in PMC: 2017 Nov 1.
Published in final edited form as: Crit Care Med. 2016 Nov;44(11):1980–1987. doi: 10.1097/CCM.0000000000001841

Table 2.

Secondary Clinical Outcomes for the Video vs Direct Laryngoscopy Groups

Clinical Outcomes Video
Laryngoscopy (n =
74)
Direct
Laryngoscopy (n =
76)
p-value
Intubation on First Laryngoscopy Attempt, No. (%) 51 (68.9%) 50 (65.8%) 0.68
Number of Laryngoscopy Attempts, median (IQR) 1 (1 - 1) 1 (1 - 2) 0.24
Time from induction to intubation, median (IQR), seconds 126 (89 - 197) 153 (93 - 253) 0.13
Time to intubation when only one attempt, median (IQR),
seconds (n=101)
105 (75 - 150) 112 (86 - 156) 0.45
Lowest arterial oxygen saturation, median (IQR), % 91% (82 - 98) 90% (82 - 97) 0.75
Change in arterial oxygen saturation from baseline,
median (IQR), %
− 4% (−14.5 to −1) − 4% (−11 to 0) 0.39
Best Cormack-Lehane view obtained on first attempt*,
No. (%)
 Grade I 57 (77%) 38 (50%) 0.001
 Grade II 15 (20.3%) 23 (30.3%)
 Grade III 1 (1.4%) 9 (11.8%)
 Grade IV 1 (1.4%) 6 (7.9%)
Difficulty of Intubation*, No. (%)
 Easy 64 (86.5%) 54 (71.1%) 0.051
 Moderate 9 (12.2%) 17 (22.4%)
 Difficult 1 (1.4%) 5 (6.6%)
Procedural Complications*, Total No. (%) 26 (35.1%) 29 (38.1%) 0.73
 Aspiration 1 (1.4%) 1 (1.3%) 1
 Esophageal Intubation 1 (1.4%) 4 (5.3%) 0.36
 SBP Less Than 80 mm Hg 8 (10.8%) 7 (9.2%) 0.79
 SpO2 < 80% 14 (19.4%) 16 (21.1%) 0.84
 Cardiac Arrest 1 (1.4%) 1 (1.3%) 1
 Airway Trauma 1 (1.4%) 0 0.49
Duration of Mechanical Ventilation, median (IQR), days 3 (1 -11) 3 (1 - 8) 0.69
ICU Length of Stay, median (IQR), days 6 (2 -11) 4 (3 - 9) 0.41
In-hospital Mortality, No. (%) 31 (41%) 32 (42%) 1

Data given as median (25th percentile - 75th percentile) or number (percentage) of patients.

p-value = Mann-Whitney U Test, Pearson's Chi Square, or Chi-square for a trend SpO2 = arterial oxygen saturation; SBP = systolic blood pressure

*

Grade of view, airway difficulty description, and complications were reported by the operator.