Most common type of shunt malfunction
Usually occurs at proximal tubing, followed by distal tubing followed by valve chamber
Proximal<unk> s usually occurs within first years of insertion
Distal<unk>  usually occurs only with shunts in place for >2yr
60% of children suffer malfunction within lifetime
Usually occurs at proximal tubing, followed by distal tubing followed by valve chamber
Proximal<unk> 
Tissue debris
Choroid plexus
Clot
Infection
Catheter-tip migration
Localized immune response to the tubing
Distal<unk> 
Kinking or disconnection of the tube
Pseudocyst formation
Infection
Tissue debris
Choroid plexus
Clot
Infection
Catheter-tip migration
Localized immune response to the tubing
Kinking or disconnection of the tube
Pseudocyst formation
Infection
Ventriculoperitoneal shunt obstruction
Ventriculoperitoneal shunt overdrainage
Ventriculoperitoneal shunt overdrainage 
Ventriculoperitoneal shunt infection
Ventriculoperitoneal shunt complications
Ventriculoperitoneal shunt mechanical failure
Elevated intracranial pressure
Sinus barotrauma