A Randomized Crossover Trial of a Pressure Relief Technology (SensAwake™) in Continuous Positive Airway Pressure to Treat Obstructive Sleep Apnea

Table 1

Objective sleep quality in CPAP devices with and without SensAwake.

	SensAwake ON (mean ± SE)	SensAwake OFF (mean ± SE)	Mean difference (95% CI)	value
CPAP data
Number of days device used	12.1 ± 0.4	12.2 ± 0.3	−0.15 (−0.97, 0.68)	0.723
Average minutes used, days on therapy	314.7 ± 14.6	324.9 ± 12.8	−10.2 (−28.9, 7.9)	0.264
Average minutes used, all days	272.7 ± 17.1	289.1 ± 15.2	−16.4 (−40.6, 7.8)	0.180
AHI (events/hour)	5.2 ± 0.6	3.6 ± 0.5	1.6 (0.6, 2.7)	0.004
Length of apnea (Sec)	13.9 ± 0.5	13.2 ± 0.5	0.7 (−0.3, 1.6)	0.158
System leak (L/min)	41.7 ± 2.5	48.9 ± 3.0	−7.2 (−10.5, −3.9)	<0.001
90th-percentile system leak (L/min)	59.4 ± 3.3	64.3 ± 3.6	−4.9 (−9.2, −0.7)	0.025
Time with excessive leak (%)	18.8 ± 3.0	26.4 ± 4.1	−7.5 (−12.8, −2.3)	0.006
Actigraph data
Total sleep time (min)	382.7 ± 13.5	378.9 ± 14.7	3.8 (−18.5, 26.1)	0.721
Sleep latency (min)	3.1 ± 0.7	2.4 ± 0.7	0.6 (−0.8, 2.1)	0.370
Sleep efficiency (%)	89.3 ± 1.2	89.0 ± 1.5	0.3 (−1.7, 2.3)	0.777
Wake after sleep onset (min)	42.6 ± 5.5	43.4 ± 6.2	−0.8 (−8.3, 6.8)	0.835
Number of awakenings (no.)	11.2 ± 1.0	11.6 ± 0.9	−0.3 (−1.8, 1.2)	0.655
PSG data
Total sleep time (min)	459.4 ± 3.9	451.2 ± 6.6	8.2 (−3.9, 20.3)	0.175
Wake after sleep onset (min)	79.6 ± 11.1	83.5 ± 9.7	−3.9 (−21.3, 13.4)	0.642
Duration of REM (min)	83.5 ± 7.2	84.4 ± 7.4	−0.9 (−14.8, 13.0)	0.895
Duration of NREM (min)	299.6 ± 9.8	294.0 ± 9.4	5.7 (−10.3, 21.6)	0.469
Sleep efficiency (%)	83.2 ± 2.4	83.5 ± 2.0	−0.3 (−4.6, 4.1)	0.889
AHI (events/hour)	4.6 ± 1.3	4.6 ± 0.9	−0.02 (−2.2, 2.2)	0.985

CPAP: continuous positive airway pressure; AHI: Apnea Hypopnea Index; CI: confidence interval; PSG: polysomnography; REM: rapid eye movement; NREM: nonrapid eye movement.