Hydrocephalus: possible role of an internal cerebrospinal fluid fistula in therapy

Transfer of cerebrospinal fluid from the lateral ventricle transcerebrally to the distal subarachnoid space was performed in the hydrocephalic dog. These fistulae were formed with the aid of a small suction tip and the operating microscope. Clinical evaluation of the dogs was made daily until sacrifice at four to six weeks. Documentation of the clinical course and ventricular size of the shunted and control animals was made. The studies indicate that the microsurgically produced fistulae may be an effective form of treatment in the hydrocephalic animal.