Evaluation of Ambu-Aura-i laryngeal mask as a conduit for endotracheal intubation. A comparison with Air-Q intubating laryngeal airway in adult surgical patients

Figures & data

Table 1. Grading of the fibre-optic view of the larynx: [13].

Grade:	Description
Grade 1	The larynx is only seen.
Grade 2	The larynx and posterior surface of the epiglottis are seen.
Grade 3	The larynx and the epiglottic tip of the anterior surface are seen (<50% visual obstruction of the epiglottis to the larynx).
Grade 4	The epiglottis is downfolded, and its anterior surface is seen (>50% visual obstruction of the epiglottis to the larynx).
Grade 5	The epiglottic downfolded and larynx cannot be seen directly.

Figure 1. Participants’ flowchart.

Figure 2. Both groups’ heart rate (HR) and mean arterial pressure (MAP).

Table 2. Patients’ demographic data.

	Aura-i group (n = 25)	Air-Q group (n = 25)	P value
Sex Male/females	14/11	12/13	0.22
Age (years)	34.2 ± 7	29.7 ± 13.5	0.14
Wight (kg)	81.6 ± 8.9	76.6 ± 9.8	0.07
ASA I/II	19/6	18/7	0.35

Data are expressed as mean ± SD or ratio. P value 0.05 is statistically significant.

Table 3. Device placement characteristics of both devices.

	Aura-i group (n = 25)	Air-Q group (n = 25)	P-value
Time for device insertion T1 (sec):	28.1 ± 3.5	32.7 ± 6.9	0.004
The number of insertion attempts:
First	23	20	0.9
Second	2	4	0.2
Third	0	1	0.5
Airway leak pressure (CmH2O	25.9 ± 3.9	23.4 ± 4	0.03
Time for tracheal intubation T2 (sec):	61.6 ± 18.2	53.8 ± 19.9	0.2
Time for device removal T3 (sec):	40.7 ± 5.1	32.0 ± 5.4	0.001
Grading of the FO view of the larynx: (value and %)
Grade 1	4 (16%)	2 (8%)	0.4
Grade 2	13 (52%)	12 (48%)	0.7
Grade 3	7 (28%)	8 (32%)	0.8
Grade 4	1 (4%)	3 (12%)	0.3
Grade 5	0	0	1

Data are expressed as mean ± SD, absolute values, or ratios. A p-value of 0.05 is statistically significant.