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(5) the valve Complicationsin order to achieve equilibrium between the cerebrospinal fluid amount inside the ventricles and the cerebrospinal fluid amount drained, the shunt valve must work properly. in some cases, the valve moves a, resulting in the accumulation of pressure in the cerebral ventricles. in addition, catheter moves from the part of the body that we, as a result of the child growth. when a valve will fail "(a rare situation, in the first malfunction (Hydrocephalus association, 2010).if the cerebrospinal fluid is drained more quickly than it is produced, i.e., the valve pushes forward more cerebrospinal fluid than that produced, the result is overdrainage. (national institute of neurological disorders and stroke, 2010; Hydrocephalus association, 2010; national Hydrocephalus foundation, 2010). if the cerebrospinal fluid is not drained in the desirable quantity, then the catheter must be changed and a new, stable "valve must be placed, or reset. one, the intracranial pressure must be monitored before resetting the valve. as a result of overdrainage, there may be a reduction in the size of the ventricle, to such a degree that the meninges are him away of the skull, or there are slit ventricles). if blood is trapped between the meninges and the skull, subarachnoid hemorrhage manner.
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