Cerebral blood flow velocity alterations during obstructive sleep apnea syndrome.

Siebler, M; Daffertshofer, M; Hennerici, M; Freund, H J · Neurology · 1990

case_report · Level V

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Abstract

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.

Medical subject headings