J.Jpn. Surg. Soc.. 60(14): 2123-2132, 1960
CEREBRAL HEMODYNAMICS IMMEDIATELY AFTER HEAD INJURY (EXPERIMENTAL STUDY ON BLOOD FLOW OF THE SUPERIOR SAGITTAL SINUS
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Department of Surgery, Keio University School of Medicine (Professor in Chief: Nobukatsu SHIMADA) Kazuo UGAJIN |
The heavy blow of 1.5 kg from the height of 1.5 m was applied on the parietal region of dogs after the sufficient heparinization being made.
The blow was strong enough to produce cerebral edema as well as subdural bleeding without any other accompanied damages.
The area from which the blood flew into the sinus was determined to be the cortex of the fron tal and parietal lobes with the dye through the tube in the superior sagittal sinus.
The venous flow of the superior sagittal sinus decreased significantly following the applied blow; the decrease was considered to be sufficient enough to produce the temporary lose of conciousness in view of disappearance of reflexes.
The decrease was partially due to the cerebral angiospasm because it did not exsist when the papaverine hydrochloride was given intravenously one minute prior to the given blow.
The decreased blood flow of the superior sagittal sinus gradually recovered almost to the normal level and then, again continued to decrease thereafter.
In cases of asphyxia, the blood flow of the superior sagittal sinus increased significantly along with the highly elevated systolic blood pressure, then decreased until the specimen died, the sinus flow being parallel to the lowering systolic pressure.
(The author's abstract)
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