Telemetric ICP monitoring after surgery for posterior fossa and third ventricular tumors. Technical note.

After surgery for posterior fossa or third ventricular tumors, hydrocephalus may persist or evolve. Proper management of this complication requires timely detection. Temporary external ventricular drainage has been suggested by some authors as an adjunct to clinical observations and radiographic studies for unshunted patients. As an alternative, the authors have used a telemetric method of pressure monitoring in association with a ventricular catheter and subcutaneous reservoir. This has been found useful in eight patients without the disadvantages inherent in other methods of management.