1973 Volume 20 Issue 1 Pages 81-91
Alterations in the cerebrospinal fluid (CSF) circulation after subarachnoid hemorrhage (SAH) were examined in 19 patients. Sources of hemorrhage were aneurysm in 17 cases, arteriovenous aneurysm in one and unknown in one. Cistenography was performed using 1 mCi of 169Yb diethyltriaminepentaacetic acid which was given intrathecally by lumbar injection. Persistent ventricular filling was seen in 48% of the cases and transient ventricular filling in 33%. The radioactivity in serial blood samples was measured by a well-type scintillation counter. The relationship of cisternogram to classification of patient s condition by Hunt was found to be closely related to the degree of abnormality of CSF circulation. The patient s history of rebleeding was also found to influence the degree of abnormality in CSF circulation. In regard to the site of aneurysms, those in the circle of Willis appeared to cause norm al pressure hydrocephalus more frequently. Shunt operation was performed on 6 cases, 4 of whom showed improvement. Indications for shun t were determined according to clinical syndrome and diagnostic tests such as angiography, pneumoencephalography and cisternography. In addition to these, test for radioactivity in the peripheral blood was found useful for evaluation of the condition in CSF circulation.
