Pathological sleep apnoea frequency remains permanent in ischaemic stroke and it is transient in haemorrhagic stroke.
Frequency and severity of sleep apnoeas, snoring history, standard clinical stroke scale were assessed in 106 acute (73 ischaemic, 33 haemorrhagic) stroke patients. Thirty-seven patients with ischaemic stroke and 14 patients with cerebral bleeding, each having pathological oxygen desaturation index during sleep, were re-tested in 3 months for sleep apnoeas and clinical stroke scale. In haemorrhagic strokes, the apnoea frequency decreased parallel with clinical improvement; but it remained as frequent as in the acute phase in the ischaemic stroke group (p = 0.0002). Apnoea frequency decreased mostly during the course of posterior stroke (p = 0.0001). It is concluded that pathological sleep apnoea frequency remains stable after ischaemic stroke indicating a concomitant obstructive sleep apnoea syndrome and sleep apnoea is a transitory symptom of haemorrhagic strokes.
Szücs
Anna
A
National Institute of Psychiatry and Neurology Epilepsy Centre, National Stroke Centre, Budapest, Hungary. szucsan@opni.hu
Vitrai
József
J
Janszky
József
J
Migléczi
György
G
Bódizs
Róbert
R
Halász
Péter
P
Nagy
Zoltán
Z
D000368:Aged; D002545:Brain Ischemia / Q000150:complications*; D002543:Cerebral Hemorrhage / Q000150:complications*; D015331:Cohort Studies; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D012720:Severity of Illness Index; D012891:Sleep Apnea Syndromes / Q000150:complications* / Q000453:epidemiology* / Q000503:physiopathology; D012913:Snoring / Q000150:complications; D020521:Stroke / Q000150:complications* / Q000209:etiology*