Table 6—

Performance of the ventilators with the mask having the smallest leak(SOMNOplus; Weinmann, Hamburg, Germany) while the ventilator settings remained those adapted with the recommended masks

Conditions			Measured parameters
Ventilator	Patient profile	PS cmH₂O	IPAP %	Δt %	t_I %	V_T %	Rebreathing % of V_T	PP %
VPAP III STA UM Cfg	Obstructive disease	10	100±0.2	86±9	98±1	99±1	0±0^#	6±4
		15	100±0.2	93±8	99±1	100±0.4	0±0^#	3±4
		20	101±0.1	78±8	98±1	100±0.3	10±0.3	11±4
	Restrictive disease	10	100±2.1^#	106±3	100±2^#	100±2^#	8±1	-1±2^#
		15	101±0.4	106±3	107±8	106±6	0±0^#	-1±1
		20	101±0.3	101±4^#	99±4^#	101±3^#	0±0^#	1±1
Synchrony 2	Obstructive disease	10	101±0.2	140±8	109±3	107±2	0±0^#	-19±2
		15	100±0.3	125±2	114±3	109±2	14±2	-14±4
		20	AT	AT	AT	AT	AT	AT
	Restrictive disease	10	100±0.4	99±2^#	100±0.5	101±0.3	1±0.2	0±1
		15	100±0.3	100±2^#	100±0.5	100±0.2	7±0.3	0±1
		20	100±0.4	101±11^#	100±1	100±0.3	12±0.3	-1±1
Vivo 40	Obstructive disease	10	114±1.3	97±14^#	95±6	96±6	0±0^#	2±2
		15	113±1.1	109±14^#	105±2	111±2	0±0^#	-2±0
		20	116±1.5	52±8	98±1	115±1	10±1	9±0
	Restrictive disease	10	AT	AT	AT	AT	AT	AT
		15	AT	AT	AT	AT	AT	AT
		20	AT	AT	AT	AT	AT	AT

Data are presented as mean±sd, unless otherwise stated. Values are the percentage of baseline conditions with the recommended mask (table 3⇑), except for rebreathing, which is the percentage of tidal volume (V_T), and pressurisation performance (PP), which is the percentage change versus baseline. PS: pressure support; IPAP: inspiratory positive airway pressure measured; Δt: time from inspiration onset to airway pressure above positive end-expiratory pressure; t_I: inspiratory time; V_T: tidal volume; rebreathing: percentage of expired volume remaining in the device circuit at the end of expiration; PP: pressurisation performance; AT: auto-triggering. VPAP III STA UM Cfg: ResMed, Saint Priest, France; Synchrony 2: Respironics, Nantes, Fracne); Vivo 40: Breas, Saint Priest). ^#: not statistically different from the baseline values.