Role of laryngeal mask airway in laparoscopic cholecystectomy

Table 1 Summary of the studies investigating ventilation and aspiration with the laryngeal mask airway

Ref.	Group	n	Ventila-toryefficiency (%)	No. of insertionattempt (1st/2nd/3rd)	Airway insertion time (s)	OLP (cm H2O)	Peak airway pressure before pneumoperi-toneum (cm H2O)	Peak airway pressure after pneumoperi-toneum (cm H2O)	Blood on mask (%)
Lu et al[12], 2002	LMA-P	40	100	33/7/0	-	29 ± 6	18.3 ± 3	24.1 ± 2	15
	LMA-C	40	80	40/0/0	-	19 ± 4	17.6 ± 2	22.7 ± 3
Maltby et al[13], 2002	LMA-P	50	92	-	-	34 ± 4	18 ± 5	25 ± 5	-
Sharma et al[15], 2010	LMA-P	30	100	24/5/1	14.2 ± 5.5	38.9 ± 3.2	15.9 ± 3.2	21.5 ± 3.2	26.6
	i-gel	30	100	28/2/0	13.6 ± 4.2	35.6 ± 4.8	14.9 ± 2.9	20 ± 3.7	10
Beleña et al[16], 2011	LMA-S	100	100	91/0/0	12 ± 4.6	28.8 ± 5.2	17.5 ± 3.3	22.9 ± 1	0
Hoşten et al[17], 2012	LMA-P	29	100	27/2/0	15.6 ± 6	27 ± 4.7			6.8
							-	-
	LMA-S	30	100	28/2/0	12.5 ± 6	27 ± 2.9			3.3
Beleña et al[18], 2013	LMA-P	60	100	51/9/0	11.2 ± 4	30.7 ± 6	19 ± 3	26 ± 5	3.3
	LMA-S	60	100	55/5/0	11.8 ± 2	26.8 ± 4	18 ± 4	24 ± 4	0

Values are presented as numbers, mean ± SD, numbers or percentage. LMA-C: Laryngeal mask airway classic; LMA-P: Laryngeal mask airway Proseal; LMA-S: Laryngeal mask airway Supreme; OLP: Oropharyngeal leak pressure.