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Updated: Jun 8, 2026

Protocol for Relative Hydrodynamic Assessment of Tri-leaflet Polymer Valves
Published on: October 17, 2013
A nonradiographic system for assessing pressure for the Codman-Hakim Programmable Valve
Nancy Olsen Bailey1, Mark Luciano, Michael V Ward
1Department of Neurosurgery, Brigham and Women's Hospital, Boston, Massachusetts 02115, USA.
Background:
The Codman-Hakim Programmable Valve is widely used in shunting hydrocephalus and other conditions.
Object:
To establish an accurate valve verification system for the Codman-Hakim programmable valve that does not require radiographic exposure.
Methods:
Prospective clinical trial tested a new valve verification system at 9 research sites.
Results:
The Valve Programming and Verification System allowed us to establish the valve setting in 62% of subjects with a programmable valve.
Conclusion:
The Valve Programming and Verification System avoids radiation exposure, is cost-effective, and time efficient for the patient and provider. In approximately one third of subjects, those in whom "adjustment complete" is not achieved, cranial radiographs are still needed.
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