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Title: Idiopathic intracranial hypertension: A comparison between French and North-American white patients
Authors: S. Mrejen
C. Vignal
B. B. Bruce
R. Gineys
F. Audren
P. Preechawat
A. Gaudric
O. Gout
N. J. Newman
A. Vighetto
M. G. Bousser
V. Biousse
Hopital Lariboisiere AP-HP
Service d'Ophtalmologie
Emory University School of Medicine
CHU de Lyon
Mahidol University
Department of Neurology
Keywords: Medicine;Neuroscience
Issue Date: 1-Jun-2009
Citation: Revue Neurologique. Vol.165, No.6-7 (2009), 542-548
Abstract: Objective. - To compare French and American white patients with idiopathic intracranial hypertension (IIH), and to determine prognostic factors associated with visual loss. Methods. - Medical records of all consecutive white patients with definite IIH seen between 2001 and 2006 in three French tertiary care medical centers and one American tertiary medical center were reviewed. Demographics, associated clinical features, and visual function at presentation and follow-up were collected. French white patients were compared to American white patients. Results. - One hundred and thirty-four patients (66 French, 68 American) were included. American patients were 8.7 times more likely than French patients to have visual acuity 20/60 or worse or visual field constriction (95% CI: 2.1-36.1, p = 0.0001). American patients were treated more aggressively than French patients. French patients were older (31 vs. 28 years, p = 0.02) and more likely to have anemia (20 vs. 2%, p < 0.001). American patients had a longer duration of symptoms prior to diagnosis (12 vs. 4 weeks, p = 0.01) and longer followup than French patients (26 vs. 11 months, p = 0.001). Multivariable analysis found that nationality was an independent risk factor for visual loss. French and American patients did not differ regarding gender proportion, frequency of obesity, sleep apnea, endocrine diseases, or systemic hypertension. Cerebrospinal fluid (CSF) opening pressures were similar in both groups. Conclusion. - American patients with IIH had worse visual outcomes than French patients despite more aggressive treatment. These differences are not explained by differences in previously known risk factors.© 2008 Elsevier Masson SAS.
ISSN: 00353787
Appears in Collections:Scopus 2006-2010

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