[The usefulness of an alternative EEG scoring system in obstructive sleep apnea].
Careful analysis of the EEG in obstructive sleep apnea (OSA) patients according to the Rechtschaffen and Kales (R & K) criteria indicates that obstructive apneas (OA) are more frequently observed during stage 1 and 2 sleep than during slow wave sleep. However it is also obvious that OA can be recognised during R & K wakefulness stage (St W). The purpose of the present study was to see whether further partition of R & K St W could define a wakefulness stage during which no apneas occur. Ten patients with predominantly OSA were studied (OA-Index 20 +/- 5). Patients EEG were scored according to classic R & K and to modified criteria which further divided R & K St W. Three additional stages were defined (STW-a, STW-b, STW-c). The partitioning of STW of R & K allowed us to define a W-stage (STW-a) during which no apneas occur, and to identify alpha (STW-b) and drowsiness (STW-c) during which OA occur frequently.
Verbraecken
J
J
Departement Pneumologie, Universiteit Antwerpen, België.
De Backer
W
W
De Cock
W
W
Wittesaele
W
W
Van de Heyning
P
P
D000328:Adult; D004569:Electroencephalography / Q000379:methods*; D004576:Electromyography; D004585:Electrooculography; D006801:Humans; D008875:Middle Aged; D010100:Oxygen / Q000032:analysis; D017286:Polysomnography / Q000379:methods*; D012891:Sleep Apnea Syndromes / Q000175:diagnosis* / Q000503:physiopathology; D012894:Sleep Stages / Q000502:physiology; D012895:Sleep, REM / Q000502:physiology
D010100:Oxygen
Het nut van een alternatief EEG scoringsysteem in obstructieve slaapapnea.