Ventriculoperitoneal shunt obstruction: Difference between revisions
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*Proximal obstructions usually occurs within first years of insertion | *Proximal obstructions usually occurs within first years of insertion | ||
*Distal obstruction usually occurs only with shunts in place for >2yr | *Distal obstruction usually occurs only with shunts in place for >2yr | ||
*60% of children suffer malfunction within lifetime | |||
===Causes=== | ===Causes=== | ||
Revision as of 15:15, 4 November 2015
Background
- Most common type of shunt malfunction
- Usually occurs at proximal tubing, followed by distal tubing followed by valve chamber
- Proximal obstructions usually occurs within first years of insertion
- Distal obstruction usually occurs only with shunts in place for >2yr
- 60% of children suffer malfunction within lifetime
Causes
- Proximal obstruction
- Tissue debris
- Choroid plexus
- Clot
- Infection
- Catheter-tip migration
- Localized immune response to the tubing
- Distal obstruction
- Kinking or disconnection of the tube
- Pseudocyst formation
- Infection
Clinical Features
Differential Diagnosis
Ventriculoperitoneal shunt problems
- Ventriculoperitoneal shunt obstruction
- Ventriculoperitoneal shunt overdrainage (Slit Ventricle Syndrome)
- Ventriculoperitoneal shunt infection
- Ventriculoperitoneal shunt mechanical failure