Codman HAKIM Bedienungsanleitung Seite 20

O'Brien M, Parent A, Davis B: Management of ventricular shunt infections.
Child's Brain 5: 304–309, 1979.
Ojemann RG: Initial experience with the Hakim valve for ventriculovenous
shunt. J Neurosurg 28: 283–287, 1968.
Ojemann RG: Normal pressure hydrocephalus. Clin Neurosurg 18:
337–370, 1971.
Ojemann RG, Black P McL: Evaluation of the patient with dementia and
treatment of normal pressure hydrocephalus. In: Wilkins RH, Regachary SS
(eds). Neurosurgery. McGraw Hill, 1984.
Penn RD, Bacus JW: The brain as a sponge: a computed tomographic look
at Hakim's Hypothesis. Neurosurgery 14: 670–675, 1984.
Raimondi AJ, Yashon D, Matsumoto S, Reyes C: Increased intracranial
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Rayport M, Reiss J: "Hydrodynamic Properties of certain shunt
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of communicating hydrocephalus with increased cerebrospinal fluid
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systems. J Neurosurg 30: 455–467, 1969.
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Programmable Valve in the Treatment of Pediatric Hydrocephalus.
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APPENDIX
Preimplantation Performance Testing
Although Codman does not recommend functional testing, some
surgeons may choose to do so. Before testing, it is extremely important
that a CODMAN HAKIM Valve with or without SIPHONGUARD Device be
flushed of all air bubbles. Air bubbles within the CODMAN HAKIM Valve or
SIPHONGUARD Device produce inaccurate manometer test results. The
presence of air bubbles can reduce the cross-sectional area of the flow path,
increase system resistance, and impede the flow of fluid through the system
during testing.
SIPHONGUARD Device Functional Testing
Equipment Required (use all sterile equipment, perform testing under
sterile conditions)
One manometer, wide-bore (e.g. 3.5 mm), graduated in mm (available in
lengths from 38 to 60 cm)
One 4-way stopcock
One syringe, 5 mL
One syringe filter, 5 µm
Tubing adapters
Silicone tubing
One male luer connector with 1/16 in. barb
Saline solution
Flushing Procedure
Note: At a rate of 0.5 mL/minute, unitized versions require 2–3 minutes
to complete flushing. This is the time required for fluid to fill the valve and
exit the distal catheter. Allot additional time to ensure the system is free of
air bubbles.
1. Assemble manometer, stopcock, syringe, and tubing (Figure A-1).
Figure A-1
2. Detach syringe from assembly and fill the syringe with sterile saline
solution using the 5 µm filter in-line. Detach the filter after filling
the syringe.
3. Set the valve opening pressure to 30 mm H
remains in its sterile package.
4.
Remove valve from the sterile package, and connect the valve to the
manometer/syringe assembly.
Note: Do not attach the distal catheter at this time.
O (294 Pa) while the valve
2
10
Manometer
To Valve