Document Detail

Intracranial hypertension after surgery in patients with Chiari I malformation and normal or moderate increase in ventricular size.
MedLine Citation:
PMID:  12168344     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To determine ICP changes in patients with Chiari type I malformation after posterior fossa reconstruction (PFR). PATIENTS AND METHODS: We continuously monitored ICP before and after PFR in 12 patients with Chiari I malformation and with an Evans' Index below or equal to 0.33. Mean ICP (epidural sensor) and percentage of B waves were calculated 24 hours before surgery and during the first 7 days after surgery. RESULTS: Mean ICP and percentage of B waves significantly increased after surgery despite a significant increase in the volume of the posterior fossa. The main finding revealed by control CT scans was compression of the quadrigeminal cistern with a reduction in size of the fourth ventricle. In six patients, a small transitory increase in supratentorial ventricular size was found. CONCLUSIONS: A transitory increase in ICP is common after PFR. This increase could be explained by an initial reperfusion phenomena in the cerebellum that provokes a transitory deterioration in CSF dynamics. The effacement of the quadrigeminal cistern and the reduction in size of the fourth ventricle suggests this hypothesis.
M A Poca; J Sahuquillo; J Ibañez; S Amorós; F Arikan; E Rubio
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Acta neurochirurgica. Supplement     Volume:  81     ISSN:  0065-1419     ISO Abbreviation:  Acta Neurochir. Suppl.     Publication Date:  2002  
Date Detail:
Created Date:  2002-08-09     Completed Date:  2003-01-21     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  100962752     Medline TA:  Acta Neurochir Suppl     Country:  Austria    
Other Details:
Languages:  eng     Pagination:  35-8     Citation Subset:  IM    
Department of Neurosurgery, Vall d'Hebron University Hospitals, Barcelona, Spain.
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MeSH Terms
Arnold-Chiari Malformation / surgery*
Cranial Fossa, Posterior / pathology,  surgery*
Dura Mater / transplantation
Follow-Up Studies
Headache / etiology
Intracranial Hypertension / etiology*
Intracranial Pressure / physiology
Middle Aged
Monitoring, Physiologic / methods
Postoperative Complications / physiopathology*
Syringomyelia / complications
Time Factors
Transplantation, Homologous

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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