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  • Title: Central retinal vein occlusion case-control study.
    Author: Koizumi H, Ferrara DC, Bruè C, Spaide RF.
    Journal: Am J Ophthalmol; 2007 Dec; 144(6):858-863. PubMed ID: 17916319.
    Abstract:
    PURPOSE: To investigate risk factors for central retinal vein occlusion (CRVO). DESIGN: Retrospective case-control study. METHODS: Consecutive patients with CRVO examined from July 1, 2005 through July 31, 2006 were compared with an historical gender- and age-matched control group of patients with ocular problems other than vascular occlusive disease from the same referral practice. Risk factors for CRVO were evaluated. RESULTS: The 144 patients in the CRVO group, 87 males and 57 females, had a mean age of 69.6 years (+/-13.6 years). CRVO was associated with hypertension (P < .001), diabetes mellitus (P = .047), glaucoma (P < .001), atrial fibrillation (P = .036), angiotensin-converting enzyme inhibitor use (P = .022), aspirin use (P < .001), and warfarin use (P = .011) by univariate analyses. Postmenopausal estrogen use was more common among women in the control group (P = .029). Multivariate logistic regression found the independent predictors for CRVO to be: glaucoma (adjusted odds ratio [OR], 4.75; P < .001), aspirin use (adjusted OR, 2.66; P = .001), and warfarin use (adjusted OR, 3.34; P = .005). CONCLUSIONS: We found many of the same risk factors previously identified for CRVO by other studies, but we identified both aspirin and warfarin use to be independent risk factors for CRVO. Although these findings suggest the vasculopathic and prothrombotic risks in some patients may not be addressed adequately by antithrombotic therapy, they also suggest that the pathogenesis of CRVO may be more complicated than just the development of a primary thrombus within the vein.
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