Table 4
Summary of sleep patterns
| Patient | Total sleep time (% of study duration) |
Time to sleep onset (min) | Sleep stages (% of total sleep time) | Arousals (events/hour) | |||||
|---|---|---|---|---|---|---|---|---|---|
| I/II | III/IV | REM | |||||||
| Group A | |||||||||
| 1 | 56 | 23 | 92 | 0 | 8 | 13 | |||
| 2 | — | *12 | — | — | — | — | |||
| 3 | 71 | 15 | 100 | 0 | 0 | >60 | |||
| 4 | 79 | 14 | 88 | 0 | 12 | >60 | |||
| 5 | 82 | 24 | 55 | 22 | 23 | 14 | |||
| 6 | 69 | 32 | 43 | 32 | 24 | 21 | |||
| Group B | |||||||||
| 10 | 41 | 17 | 43 | 57 | 0 | 0 | |||
| 11 | 82 | 15 | 31 | 23 | 47 | 0 | |||
| 12 | 40 | 92 | 51 | 37 | 11 | 0 | |||
| 13 | 60 | 20 | 78 | 10 | 12 | >60 | |||
| 14 | 67 | 44 | 48 | 30 | 22 | 0 | |||
| 15 | 39 | 36 | 31 | 42 | 27 | 0 | |||
-
Group A and B=patients with a reduced and normal ventilatory sensitivity to inhaled CO2 respectively. For patient 2, time to sleep onset (*) was taken from the first indication of slowing of the EEG frequency; other sleep parameters were not calculated because the EEG was atypical (see text).
