Pupillographic Sleepiness Test and Polysomnography in Nondemented Patients with Ischemic White Matter Lesions
Table 1
Sleep parameters of WML patients with normal PUI (, ) and elevated PUI (, ).
Sleep parameter
: normal PUI (4.32 mm/min),
: elevated PUI (10.76 mm/min),
Sleep apnea (13.08 mm/min),
Significance of differences to
Insomnia (7.86 mm/min),
Significance of differences to
Total sleep time
6.3 ± 1.1 h
6.6 ± 1.6 h
n.s.
5.5 ± 1.3 h
n.s.
Sleep onset latency
16.5 ± 15.8 min
11.3 ± 13.7 min
n.s.
27.4 ± 24.0 min
0.05
REM latency
98.4 ± 40.6 min
146.2 ± 55.2 min
0.05
129.8 ± 51.7 min
0.05
WASO
6.8 ± 2.9%
12.7 ± 8.7%
0.05
16.9 ± 15.9%
0.05
N1 sleep
7.1 ± 4.5%
18.9 ± 11.5%
0.05
16.3 ± 12.4%
0.05
N2 sleep
59.6 ± 9.1%
51.5 ± 14.0%
n.s.
58.7 ± 17.0%
n.s.
Slow wave sleep
7.4 ± 7.7%
2.1 ± 1.8%
0.05
0.0 ± 0.0%
0.01
REM sleep
19.2 ± 8.4%
14.8 ± 6.4%
n.s.
8.2 ± 12.2%
0.05
AHI
3.0 ± 2.3/h
33.6 ± 15.2/h
0.001
6.1 ± 3.9/h
n.s.
PMLS-Index
6.2 ± 5.0/h
17.7 ± 12.6/h
0.01
27.8 ± 9.8/h
0.05
The group was separated by the apnea-hypopnea-index (AHI) into an apnea-subgroup and an insomnia-subgroup. WASO = wake after sleep onset, AHI = apnea-hypopnea-index, and PMLS = periodic leg movements in sleep.
