An Evaluation of a Novel Mask in Four Patients with Obstructive Sleep Apnea and Overlap Syndromes

Table 1

Treatment parameters and results.

Treatment	TIB	TST	Slp Eff	Apneas		Hypopneas		AHI	RDI	Ar + Aw		Min SpO2
RxI/RxE/RxO2	Minutes	Minutes	Percent	Count	Index	Count	Index	Index	Index	Count	Index
8/4/0	22	6	27.3	1	10	0	0	10	10	3	30	83
9/5/0	22	14.5	65.9	3	12.4	7	29	41.4	41.4	12	49.7	86
10/6/2	17	13	76.5	4	3.2	9	41.5	60	60	11	50.8	88
11/7/2	44	38	86.4	2	3.2	1	1.6	4.7	4.7	2	3.2	86
12/8/2	28	15.5	55.4	0	0	0	0	0	0	12	46.5	87
14/10/2	52.5	27	51.4	8	17.8	1	2.2	20	20	24	53.3	84
16/12/2	47	43.5	92.6	0	0	0	0	0	0	4	5.5	89
13/9/2	26.5	1	3.8	0	0	0	0	0	0	1	60	89
18/14/2	14	14	100	5	21.4	1	4.3	25.7	25.7	0	0	90
19/15/2	28.5	28	98.2	4	8.6	0	0	8.6	8.6	1	2.1	93
20/16/2	25	19.5	78	2	6.2	0	0	6.2	6.2	6	18.5	92
21/17/2	60.5	56	92.6	3	3.2	1	1.1	4.3	4.3	9	9.6	90
23/19/3	6	3	50	0	0	0	0	0	0	2	40	92
22/18/3	32	30.5	95.3	0	0	0	0	0	0	2	3.9	91

TIB: time in bed.
TST: total sleep time.
Slp Eff: sleep efficiency.
AHI: apnea-hypopnea index.
RERA: respiratory effort-related arousal.
RDI: respiratory disturbance index. The respiratory disturbance index (RDI) is the total number of events (e.g., apneas, hypopneas, and RERAs) per hour of sleep. The RDI is generally larger than the AHI, because the RDI includes the frequency of RERAs, while the AHI does not.
Ar + Aw: arousal + awakening.
Ar + Aw Index: number of arousal and awakening per hour.