Cerebral blood flow velocity alterations during obstructive sleep apnea syndrome.
We recorded cerebral blood flow velocity (CBFV) for the assessment of CO2-regulated alterations during apnea by means of transcranial Doppler ultrasound in a patient with obstructive sleep apnea syndrome. CBFV increased up to doubled peak flow values during obstructive apneic phases. The results provide evidence for a normal CO2 regulation of CBFV leading to periodic vascular stress during the night.
Department of Neurology, Heinrich Heine University of Düsseldorf, West Germany.
M
M
Siebler
M
M
Daffertshofer
M
M
Hennerici
H J
HJ
Freund
D001783:Blood Flow Velocity; D002560:Cerebrovascular Circulation; D006801:Humans; D008297:Male; D008875:Middle Aged; D008991:Monitoring, Physiologic; D012891:Sleep Apnea Syndromes / Q000503:physiopathology*; D013577:Syndrome; D014463:Ultrasonography