title: [Diagnostic and therapeutic criteria of adult normal-pressure hydrocephalus. Descriptive multicenter national study].
abstract: BACKGROUND
  There are some controversial items concerning normal pressure hydrocephalus (NPH). The incidence of NPH is unknown since there is not agreement concerning diagnostic criteria. The choice of shunt location and valve type may be difficult if we consider the wide range of options available. We present a descriptive multicentric study which pretends evaluate the consensus between different centers.
  
  
  METHODS
  We have requested 19 neurosurgical departments about diagnostic criteria, shunt location, valve type, cases number per year and therapeutic results.
  
  
  RESULTS
  The study shows the lack of agreement in our sample. We observed some kind of relationship between the number of cases/year and the use of more complex and invasive diagnostic procedures. The most frequently shunt location was ventricleperitoneal. Concerning type valve, most of departments use to have a predilection for a certain type and model which was ever used. However, the model was frequently different on each department. Anyway, differential pressure valve was the more frequent choice. The average therapeutic result of the sample was 77.6%.
  
  
  CONCLUSIONS
  In our opinion, is advisable to define a common diagnostic criteria for NPH in order to establish the real incidence of this entity.
authors.affiliation: Servicio de Neurocirugia, Hospital Clinic i Provincial de Barcelona, Espana.
authors.forename: J
authors.initials: J
authors.lastname: Aguas-Valiente
authors.forename: R
authors.initials: R
authors.lastname: Martínez-Mañas
authors.forename: E
authors.initials: E
authors.lastname: Ferrer-Rodríguez
mesh_terms: D001921:Brain / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D006850:Hydrocephalus, Normal Pressure / Q000175:diagnosis* / Q000503:physiopathology / Q000601:surgery*; D012189:Retrospective Studies; D017287:Ventriculoperitoneal Shunt
vernacular_title: Criterios diagnósticos y terapéuticos en la hidrocefalia normotensiva del adulto. Estudio nacional multicéntrico descriptivo.