The Effect of Position on Ventricular Pressure in Shunted and Unshunted Individuals. A Telemetric Study
We have previously reported the development and clinical use of a telemetric monitoring device for shunt systems (Chapman et al. 1981). From 1978 to the present approximately 100 of these sensors (Telesensor Radionics, Inc., Burlington, MA., USA) have been implanted. The majority have been used in the context of treating hydrocephalus due to a variety of etiologies. A small group of patients have had telesensors placed in conjunction with ventricular catheters at the time of surgery for posterior fossa tumors associated with obstructing hydrocephalus. In this circumstance the device is used for monitoring post-operative intracranial pressures (Chapman et al. 1984). A small group of patients has subsequently required shunting in the post-operative period. This has left a population of patients who are not hydrocephalic and have not been shunted yet retain an indwelling ventricular catheter connected to the telesensor device. This has afforded us the opportunity to study ventricular fluid pressure (VFP) in a “normal” population of non-hydrocephalic patients.
KeywordsIntracranial Pressure Ventriculoperitoneal Shunt Shunt Patient Obstructive Hydrocephalus Shunt System
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