Cerebrospinal fluid dynamics and long-term survival of the Strata valve in idiopathic normal pressure hydrocephalus.
Acta Neurol Scand
; 124(2): 115-21, 2011 Aug.
Article
em En
| MEDLINE
| ID: mdl-21039363
ABSTRACT
OBJECTIVE:
Cerebrospinal fluid (CSF) dynamics and long-term shunt survival of the Strata CSF shunt were evaluated in patients with idiopathic normal pressure hydrocephalus (INPH). SUBJECTS ANDMETHODS:
Seventy-two patients with INPH received a Strata valve. A CSF infusion test, neuroimaging and video recording of gait were performed at baseline and at 6 months (n = 68) after surgery. Long-term shunt survivals were obtained from patient records.RESULTS:
The shunt survival at 1 year was 94% and at 3 years 92.5%. Forty-nine patients (72%) had an improved gait. Two patients were improved despite non-functioning shunts, indicating a possible placebo response. Nineteen patients were not improved at the 6-month follow-up. The shunt tests revealed a functioning shunt in 12; thus, unnecessary shunt revisions could be avoided. Seventeen patients showed a siphoning effect. Shunt revisions were made in six patients. Eight hygromas/subdural hematomas were found.CONCLUSIONS:
The long-term survival of the Strata valves was good, and a concern of complications is not a reason to exclude elderly with INPH from shunt surgery. Studies are needed to evaluate pros and cons of the anti-siphon device. Using a CSF shunt test, unnecessary shunt revisions may be avoided.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Derivações do Líquido Cefalorraquidiano
/
Pressão do Líquido Cefalorraquidiano
/
Dinâmica não Linear
/
Hidrocefalia de Pressão Normal
Tipo de estudo:
Observational_studies
/
Prognostic_studies
Limite:
Aged
/
Aged80
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Ano de publicação:
2011
Tipo de documento:
Article