Programmable valve (PV) has been shown as a solution to the high revision rate in pediatric hydrocephalus patients, but it remains controversial among adults. This study is to compare the overall revision rate, revision cause, and revision-free survival between PV and non-programmable valve (NPV) in adult patients with different hydrocephalus etiologies.
Relatively high revision rates up to 32% of CSF shunting operations remained an unsolved problem for neurosurgeons. The cause of revisions were diverse, including overdrainage/underdrainage, shunting system obstruction, infection or technical skill related. Programmable valve (PV) has been shown as a solution to the high revision rate in pediatric hydrocephalus patients, but it remains controversial among adults. This study is to compare the overall revision rate, revision cause, and revision-free survival between PV and non-programmable valve (NPV) in adult patients with different hydrocephalus etiologies. The investigators reviewed the chart of all patients with hydrocephalus receiving index ventricular CSF shunt operations conducted at a single institution in northern Taiwan from January 2017 to December 2017. Patients included in the study were followed up for at least five years. Statistical tests including independent t-test, Chi-square test and Fisher's exact test were used for comparative analysis, and Kaplan-Meier curve using log-rank test was performed to compare the revision-free survival between the PV and NPV groups
Study Type
OBSERVATIONAL
Enrollment
325
Programmable valve used in the study included Medtronic Strata, B-Braun ProGav, Codman Certas.
Non-programmable valve used in the study was Medtronic CSF-flow control valve.
Initial Shunt revision rate
the ratio of the total number of patients with at least one revision to the total number of patients included in this study
Time frame: since the time of index operation until the initial revision or 2022/07/31
Total Shunt revision rate
the ratio of the total number of revisions to the total number of ventricular CSF shunt operations
Time frame: since the time of index operation until the initial revision or 2022/07/31
The cause of shunt revision
the cause of the shunt malfunction warranting revision operation
Time frame: since the time of index operation until the initial revision or 2022/07/31
Type of the revision operation
the detailed description of the revision operation
Time frame: since the time of index operation until the initial revision or 2022/07/31
Revision-free survival
the interval between index operation and the initial revision
Time frame: since the time of index operation until the initial revision or 2022/07/31
Shunt revision-free survival among different hydrocephalus etiologies
the individual interval between index operation and the initial revision among different hydrocephalus etiologies
Time frame: since the time of index operation until the initial revision or 2022/07/31
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