All night | NREM 1 and 2 | REM | SWS | |
Duration s | ||||
Hypopnoeas | 21.8 (20.0–27.5) | 21.5 (20.0–26.5) | 37.0 (26.1–41.5)# | 23.0 (18.7–37.9)# |
Apnoeas | 21.8 (17.3–22.5) | 21.0 (17.0–22.5) | 21.0 (19.0–25.8)# | 20.3 (18.0–33.1)# |
Desauration O2 % | ||||
Hypopnoeas | 4.0 (3.0–5.0) | 4.0 (3.0–5.0) | 6.2 (5.2–9.3)# | 4.5 (2.2–7.7)# |
Apnoeas | 5.0 (4.0–6.0) | 5.0 (4.0–6.0) | 5.0 (3.0–9.0)# | 3.0 (2.0–11.0)# |
Data are presented as median (interquartile range)
NREM: nonrapid eye movement
REM: rapid eye movement
SWS: slow wave sleep
O2: oxygen
Results apply to n=15 patients
#: n=8 subjects in whom apnoeas/hypopnoeas occurred in all three sleep states