Effectiveness of adaptive servo-ventilation

Table 1 An overview of the futures of the three adaptive servo-ventilation devices

Manufacturer	ResMed	Philips-Respironics	Weinmann
Current version	S9 VPAP Adapt, AutoSet CS-A	BiPAP autoSV Advanced System One	Prisma LINE CR
EPAP (default)	4-15 cmH2O auto	4-15 cmH2O auto	4-20 cmH2O auto
(min EPAP)	4-15 cmH2O	4-25 cmH2O	4-20 cmH2O
(max EPAP)	min EPAP-15 cmH2O	min EPAP-25 cmH2O	min EPAP-20 cmH2O
IPAP	Max 30 cmH2O	Max 25 cmH2O	Max 30 cmH2O
PS	0 to 30-prevailing EPAP	0 to 25-prevailing EPAP	0 to 30-prevailing EPAP
Calculation	The recent 3-min average minute volume	The recent 4-min average peak flow	The average of the minute volume in the recent 2-min and an earlier interval
Target for PS	90% of the average minute volume	90%-95% of the average peak flow (without SDB)	Relative minute volume of the current breath to the average
		60% percentile of peak flow (with SDB)
	Approximate the minute volume to the target	Approximate the peak inspiratory flow to the target	Stabilize the relative minute volume
Backup rate	Auto (cannot be established manually)	Auto (default) or fixed rate	Auto (default) or fixed rate

EPAP: Expiratory positive airway pressure; IPAP: Inspiratory positive airway pressure; PS: Pressure support; SDB: Sleep disordered breathing.