Posthyperventilatory Steal Response in Chronic Cerebral Hemodynamic Stress
نویسندگان
چکیده
منابع مشابه
Posthyperventilatory steal response in chronic cerebral hemodynamic stress: a positron emission tomography study.
BACKGROUND AND PURPOSE The alteration of regional cerebral blood flow (CBF) during and after hyperventilation was measured using positron emission tomography (PET) to determine the circulatory response induced by daily respiratory changes in the cerebral area under chronic hemodynamic stress. METHODS Three normal volunteers and 12 patients with an obstruction of major cerebral arteries underw...
متن کاملLong-term adaptation of cerebral hemodynamic response to somatosensory stimulation during chronic hypoxia in awake mice.
Effects of chronic hypoxia on hemodynamic response to sensory stimulation were investigated. Using laser-Doppler flowmetry, change in cerebral blood flow (CBF) was measured in awake mice, which were housed in a hypoxic chamber (8% O₂) for 1 month. The degree of increase in CBF evoked by sensory stimulation was gradually decreased over 1 month of chronic hypoxia. No significant reduction of incr...
متن کاملCerebral hemodynamic response to mental activation in normo- and hypercapnia.
Changes of regional cerebral blood flow from rest to mental activation by a visually presented spatial reasoning test were measured during normo- and hypercapnia in 10 healthy subjects. Hypercapnia, elicited by inhalation of 6% CO2, resulted in similar flow increases in all 32 cortical regions measured. Increases of flow during testing were seen in post-central regions of the brain whether the ...
متن کاملCerebral Hemodynamic Response to Mental Activation in Normo- and Hypercapnia
Changes of regional cerebral blood flow from rest to mental activation by a visually presented spatial reasoning test were measured during normoand bypercapnia in 10 healthy subjects. Hypercapnia, elicited by inhalation of 6% CO,, resulted in similar flow increases in all 32 cortical regions measured. Increases of flow during testing were seen in post-central regions of the brain whether the re...
متن کاملStress response in chronic hypercapnia.
SCHAEFER, KARL E., NANCY MCCABE, AND JUDITH WITHERS. Stress response in chronic hypercajmia. Am. J. Physiol. 214(3) : 543-548. 1968.-Respiratory acidosis induced by prolonged exposure of guinea pigs to 15% COz in 21y0 O2 was compensated after 3 days of exposure. Adrenal cortical response as measured by a rise of blood corticosteroids, adrenal cholesterol depletion, and lymphopenia was limited t...
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ژورنال
عنوان ژورنال: Stroke
سال: 1998
ISSN: 0039-2499,1524-4628
DOI: 10.1161/01.str.29.7.1281