Reliability of intraventricular pressure measurement with fiberoptic or solid-state transducers: avoidance of a methodological error

Neurosurgery
A RaabeJ Schöche

Abstract

The failure of intraventricular pressure measurement in cases of catheter blockage or dislodgement is thought to be eliminated by using intraventricular microtransducers. We report on an avoidable methodological error that may affect the reliability of intraventricular pressure measurement with these devices. Intraventricular fiberoptic or solid-state devices were implanted in 43 patients considered to be at risk for developing catheter occlusion. Two different types were used, i.e., devices in which the transducer is placed inside the ventriculostomy catheter (Type A) and devices in which the transducer is integrated in the external surface of the catheter (Type B). Type A devices were used in 15 patients and Type B devices in 28 patients. Pressure recordings were checked at bedside for the validity and reliability of the measurement. Of the 15 patients treated with Type A devices, no reliable pressure recordings were able to be obtained in three patients in whom ventricular punctures were not successful. In 4 of the remaining 12 patients, periods of erroneous pressure readings were detected. After opening of cerebrospinal fluid drainage, all Type A devices failed to reflect real intraventricular pressure. In patients treated ...Continue Reading

References

Mar 1, 1990·Journal of Neurosurgery·J S CrutchfieldL H Michael
Aug 1, 1987·Journal of Neurosurgery·R C OstrupM H Zornow
May 1, 1984·Neurosurgery·C B ShieldsH D Garretson
Aug 1, 1993·Journal of Neuroscience Methods·S P GopinathR G Grossman

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Citations

Nov 4, 2000·Journal of Neurosurgery·J S KroinR D Penn
Feb 9, 2017·Journal of Neurosurgical Anesthesiology·Abhijit V LeleUNKNOWN Representing SNACC Task Force for Developing Guidelines for Perioperative Management of External Ventricular and Lumbar Drai

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