Comparison of intubating laryngeal mask airway and video laryngoscope during emergency intubation in patients who are critically ill

Table 1 Baseline demographic characteristics in the video laryngoscope and intubating laryngeal mask airway groups, n (%)

Characteristic	Video laryngoscope group (n = 32)	Intubating laryngeal mask airway group (n = 32)	P value
Age (years) (mean ± SD)	56.63 ± 15.0	53.91 ± 19.5	0.535
Male sex	20 (62.5)	17 (53.1)	0.448
Body mass index (kg/m²) (mean ± SD)	23.9 ± 3.5	25.3 ± 3.1	0.098
Comorbidities
Type 2 diabetes mellitus	9 (28.1)	3 (9.4)	0.055
Hypertension	13 (40.6)	13 (40.6)	1.000
Chronic obstructive pulmonary disease	11 (34.4)	6 (18.8)	0.157
Stroke	1 (3.1)	3 (9.4)	0.302
Acute coronary syndrome	4 (12.5)	2 (6.2)	0.391

Table 2 Airway assessment in the video laryngoscope and intubating laryngeal mask airway groups, n (%)

Parameter	Video laryngoscope group (n = 23)	Intubating laryngeal mask airway group (n = 22)	P value
Thyromental distance (cm) (mean ± SD)	6.79 ± 0.25	6.77 ± 0.18	0.780
Sternomental distance (cm) (mean ± SD)	12.72 ± 0.17	12.77 ± 0.15	0.287
Interincisor distance (cm) (mean ± SD)	4.40 ± 0.26	4.37 ± 0.22	0.647
Neck circumference (cm) (mean ± SD)	30.56 ± 5.1	30.50 ± 5.4	0.962
Mallampati score			0.667
Class I	4 (17.4)	6 (27.3)
Class II	7 (30.4)	7 (31.8)
Class III	12 (52.2)	9 (40.9)
Easy mask ventilation	22 (68.8)	15 (46.9)	> 0.050
Mandibular protrusion			0.316
A	20 (87.0)	21 (95.5)
B	3 (13.0)	1 (4.5)

Table 3 Intubation success in the video laryngoscope and intubating laryngeal mask airway groups, n (%)

Outcome	Video laryngoscope group (n = 32)	Intubating laryngeal mask airway group (n = 32)	P value
First-attempt success	28 (87.5)	17 (53.1)	0.009
Attempts distribution			0.009
1 attempt	28 (87.5)	17 (53.1)
2 attempts	4 (12.5)	7 (21.9)
3 attempts	0 (0)	2 (6.2)
Failed intubation	0 (0)	6 (18.8)

Table 4 Time taken for intubation in the video laryngoscope and intubating laryngeal mask airway groups

Airway management values of patients	Video laryngoscope group (n = 32)	Intubating laryngeal mask airway group (n = 26)	P value
Insertion time (seconds)	18.75 ± 10.2	24.92 ± 8.1	t = -2.497; P = 0.015
Intubation time (seconds)	25.63 ± 14.5	57.2 ± 14.7	t = -8.212; P ≤ 0.001
Total intubation time (seconds)	44.0 ± 19.7	82.5 ± 14.5	t = 8.56; P ≤ 0.001

Data are expressed as mean ± SD.

Table 5 Number of maneuvers performed in the video laryngoscope and intubating laryngeal mask airway groups, n (%)

Maneuver	Video laryngoscope group (n = 32)	Intubating laryngeal mask airway group (n = 26)	P value
Present	8 (25.0)	15 (57.7)	χ2 = 6.407; df = 1; P = 0.011
Absent	24 (75.0)	11 (42.3)

Table 6 Oxygen saturation in the video laryngoscope and intubating laryngeal mask airway groups at different intervals

Oxygen saturation (%)	Video laryngoscope group (n = 32)	Intubating laryngeal mask airway group (n = 26)	P value
Baseline	91.0 ± 9.7	93.3 ± 7.7	t = -1.015; P = 0.315
After anesthesia induction	96.0 ± 6.4	97.2 ± 3.7	t = -0.843; P = 0.403
After device insertion	95.6 ± 6.5	97.7 ± 3.8	t = -1.470; P = 0.147
1 minute after intubation	97.8 ± 4.6	98.7 ± 2.7	t = -0.885; P = 0.380
2 minutes after intubation	98.3 ± 4.2	98.9 ± 2.5	t = -0.573; P = 0.569
3 minutes after intubation	98.5 ± 3.8	98.9 ± 2.5	t = -0.450; P = 0.654

Data are expressed as mean ± SD.

Table 7 Complications in the video laryngoscope and intubating laryngeal mask airway groups, n (%)

Complication	Video laryngoscope group (n = 32)	Intubating laryngeal mask airway group (n = 26)	P value
Peri-intubation mouth damage	0 (0.0)	7 (26.9)	χ2 = 9.798; df = 1; P = 0.002
Post-extubation dysphagia	0 (0.0)	0 (0.0)	NA
Post-extubation sore throat	1 (3.1)	7 (26.9)	χ2 = 6.832; df = 1; P = 0.009
Peri-intubation teeth damage	0 (0.0)	0 (0.0)	NA
Post-extubation hoarseness	1 (3.1)	3 (11.5)	χ2 = 1.581; df = 1; P = 0.209
Peri-intubation esophageal intubation	1 (3.1)	2 (7.7)	χ2 = 0.610; df = 1; P = 0.435

NA: Not available.