Cerebral fluid cavity oxygen tension

Abstract
The relationship between arterial blood and ventricular CSF [cerebrospinal fluid] pO2 [oxygen tension] was studied in 4 patients. Estimations of pO2 on CSF within a subcutaneous reservoir connected to a ventricle gave results comparable to values obtained from CSF directly sampled from the ventricles. The pO2 of CSF within abnormal and dilated ventricles showed similar responses to arterial pO2 changes as does the pO2 of lumbar and cisternal CSFk previously reported, following the arterial change but being much smaller in magnitude. The available techniques and disadvantages of sampling methods for pO2 estimation are reviewed.