Neuroendoscopic intracranial pressure monitoring.
OBJECTIVE
We wished to find a way of monitoring patients' intracranial pressure (ICP) during endoscopic surgery.


METHODS
The Codman Microsensor ICP monitor can be inserted through the working channel of an endoscope with an interposed assembly (Check Flo II with male fitting, 9 F, manufactured by Cook, model #CFM-100TM) to provide a water-tight seal and allow simultaneous irrigation. During endoscopic third ventriculostomy surgery with this setup in our hospital, the ICP was continuously monitored. The effects of irrigation on ICP were also followed. The sensor was assumed to be absolutely accurate and not referenced to a column of water.


CONCLUSIONS
The small size of the Microsensor ICP monitor enabled easy placement through the working channel of the endoscope and interposed assembly. The ICP reading was continuously available, even during irrigation. The effect of irrigation on ICP was carefully monitored, and limited when pressure changes were noted.
Vassilyadi
Michael
M
Division of Neurosurgery, Children's Hospital of Eastern Ontario, University of Ottawa, 401 Smyth Road, Ottawa, Ontario K1H 8L1, Canada. vassilyadi@cheo.on.ca
Ventureyra
Enrique C G
EC
D001921:Brain / Q000503:physiopathology* / Q000601:surgery*; D004724:Endoscopy; D004867:Equipment Design; D006801:Humans; D007223:Infant; D007427:Intracranial Pressure; D008297:Male; D016343:Monitoring, Intraoperative / Q000295:instrumentation* / Q000379:methods*