Ventriculoperitoneal shunt overdrainage: Difference between revisions
(Diagnosis and CT image) |
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**As pressure increases the occluding tissue diesengages allowing drainage to resume | **As pressure increases the occluding tissue diesengages allowing drainage to resume | ||
**Leads to cyclic incr ICP complaints that worsen when pt stands | **Leads to cyclic incr ICP complaints that worsen when pt stands | ||
**Newer valve devices with antisiphon features make this less common | |||
==Clinical Features== | ==Clinical Features== | ||
Revision as of 23:55, 30 November 2015
Background
- Overdrainage -> tissue occluding the orifices of the proximal shunt apparatus
- As pressure increases the occluding tissue diesengages allowing drainage to resume
- Leads to cyclic incr ICP complaints that worsen when pt stands
- Newer valve devices with antisiphon features make this less common
Clinical Features
Differential Diagnosis
Ventriculoperitoneal shunt problems
- Ventriculoperitoneal shunt obstruction
- Ventriculoperitoneal shunt overdrainage (Slit Ventricle Syndrome)
- Ventriculoperitoneal shunt infection
- Ventriculoperitoneal shunt mechanical failure
Diagnosis
- CT Head necessary for shunt placement workup and overdrained ventricles
