title: [Pulse oximetry and obstructive sleep apnea].
abstract: We report a case of a 54 years old man, treated with Methylphenidate (Ritalin) because of narcolepsy, who was referred with suspected vertebro-basilar insufficiency. In the hospital, apnoea during sleep attacks were observed. A polysomnography showed marked obstructive sleep apnoea with a disturbed hypnogram, but during the apnoeas the oxygen saturation only decreased by three to six percent. If a patient suspected for obstructive sleep apnoea has only small desaturations, an oximetry can be insensitive as the only "sleep examination", and a full polysomnography is recommended.
authors.affiliation: Rigshospitalets Søvnapnøgruppe: neurologisk afdeling, øreafdelingen og anaestesi/epidemiafdelingen, Rigshospitalet, København.
authors.forename: P W
authors.initials: PW
authors.lastname: Norup
authors.forename: N E
authors.initials: NE
authors.lastname: Petri
authors.forename: E
authors.initials: E
authors.lastname: Jacobsen
mesh_terms: D006801:Humans; D008297:Male; D008875:Middle Aged; D010092:Oximetry; D011674:Pulse; D012891:Sleep Apnea Syndromes / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology
vernacular_title: Pulsoximetri og obstruktiv søvnapnø.