|Cerebellar volume and long-term use of phenytoin.|
|PMID: 12810345 Owner: NLM Status: MEDLINE|
|OBJECTIVES: To perform MRI cerebellum volumetry in patients exposed to phenytoin and to identify factors associated with cerebellar atrophy (CA).
METHODS: From 100 consecutive epilepsy patients we selected those with phenytoin use for more than 2 months and with MRI scan available for volumetric studies. We obtained cerebellar volumes corrected for total intracranial volume. Volumes below 2 standard deviations from the mean of control group were considered abnormal.
RESULTS: We studied 56 patients (33 women). Mean age was 33.6 years and mean duration of epilepsy was 17.6 years. Mean daily dose of phenytoin was 301 mg. CA was detected in 20 (35.7%) patients. CA was not associated with frequent generalised seizures. CA correlated with duration of epilepsy (r=-0.34; P=0.01) and years of treatment with phenytoin (r=-0.48; P=0.001), but not with age and mean daily dosage of phenytoin (P>0.05). However, a multiple correlation analysis as well as a backward stepwise multiple regression analysis including all variables showed that only duration of treatment was significantly associated with CA (P=0.001).
CONCLUSIONS: CA is frequently associated with long-term use of phenytoin. Although duration of epilepsy may have an influence in the CA, this is clearly less important than the time of exposure to phenytoin.
|Felipe Antonio De Marcos; Enrico Ghizoni; Elaine Kobayashi; Li Min Li; Fernano Cendes|
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|Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't|
|Title: Seizure Volume: 12 ISSN: 1059-1311 ISO Abbreviation: Seizure Publication Date: 2003 Jul|
|Created Date: 2003-06-17 Completed Date: 2003-12-09 Revised Date: 2014-10-21|
Medline Journal Info:
|Nlm Unique ID: 9306979 Medline TA: Seizure Country: England|
|Languages: eng Pagination: 312-5 Citation Subset: IM|
|APA/MLA Format Download EndNote Download BibTex|
Anticonvulsants / administration & dosage, adverse effects*, pharmacokinetics
Cerebellum / drug effects*, pathology
Dose-Response Relationship, Drug
Epilepsies, Partial / blood, diagnosis, drug therapy
Epilepsy / blood, diagnosis, drug therapy*
Epilepsy, Generalized / blood, diagnosis, drug therapy
Epilepsy, Temporal Lobe / blood, diagnosis, drug therapy
Epilepsy, Tonic-Clonic / blood, diagnosis, drug therapy
Image Processing, Computer-Assisted*
Magnetic Resonance Imaging*
Phenytoin / administration & dosage, adverse effects*, pharmacokinetics
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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