Conditions for laryngeal mask airway placement in terms of oropharyngeal leak pressure: a comparison between blind insertion and laryngoscope-guided insertion

Table 4 Haemodynamic profiles and bispectral indices during laryngeal mask airway insertion

		Baseline	1 min after induction	Pre-insertion	1 min after LMA insertion
MBP (mmHg)	Group 1	96.2 ± 15.0	77.4 ± 12.6	67.2 ± 11.9	71.5 ± 14.0
MBP (mmHg)	Group 2	94.5 ± 12.7	75.4 ± 11.2	65.7 ± 10.8	75.2 ± 12.4
HR (beats/min)	Group 1	72.5 ± 12.7	66.2 ± 11.3	63.5 ± 11.2	63.5 ± 12.3
HR (beats/min)	Group 2	74.6 ± 11.9	69.2 ± 12.0	65.0 ± 11.5	65.3 ± 12.4
SpO₂ (%)	Group 1	99.0 ± 1.3	99.9 ± 0.3	99.8 ± 0.6	99.8 ± 0.4
SpO₂ (%)	Group 2	99.0 ± 1.3	99.9 ± 0.4	99.9 ± 0.4	99.8 ± 0.7
BIS	Group 1	96.7 ± 2.4	42.2 ± 10.7	43.2 ± 8.2	48.0 ± 10.9
BIS	Group 2	96.9 ± 1.6	41.3 ± 11.3	44.1 ± 9.9	48.8 ± 11.4

Values are mean ± SD
LMA laryngeal mask airway, Group 1 = Blind insertion group; Group 2 = Laryngoscope-guided insertion group; MAP mean arterial pressure; HR heart rate; SpO₂ peripheral oxygen saturation; BIS bispectral index

ISSN: 1471-2253