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  • Title: Influential factors and clinical significance of an atypical presentation of posterior reversible encephalopathy syndrome in patients with eclampsia.
    Author: Dong X, Nao J.
    Journal: Neurol Sci; 2019 Feb; 40(2):377-384. PubMed ID: 30478719.
    Abstract:
    BACKGROUND AND PURPOSE: Posterior reversible encephalopathy syndrome (PRES) is a clinical and radiologic entity for which eclampsia is one of the most common predisposing conditions. Despite the imaging changes typically reported, the predisposing factors and clinical implications of atypical presentations have yet to be fully clarified. METHODS: A total of 56 patients with PRES were selected for study. Demographic, clinical, and laboratory data were analyzed, focusing on atypical presentations of PRES. Multiple logistic regression was applied to identify factors impacting such atypical presentations, and functional outcomes were assessed upon patient discharge. RESULTS: Overall, 22 of the 56 patients (39.3%) displayed features of atypical PRES. By multiple logistic regression, headache (OR = 5.39; 95% CI, 1.24-23.51; p = 0.025) and frequent convulsions (OR = 4.41; 95% CI, 1.09-17.91; p = 0.038) proved to be independent factors associated with atypical PRES. Ultimately, outcomes of 18 patients were gauged as poor, based on the modified Rankin Scale (mRS). Logistic regression indicated that visual disturbances (OR = 9.02; 95% CI, 1.37-59.35; p = 0.02), frequent convulsions (OR = 9.47; 95% CI, 1.67-53.63; p = 0.01), and restricted diffusion on imaging (OR = 11.96; 95% CI, 1.76-81.11; p = 0.01) were independently associated with poor outcomes in patients with eclampsia-related PRES. CONCLUSION: Headache and frequent convulsions are independently associated with atypical presentations of PRES. If present, restricted diffusion may help in predicting poor outcomes of such patients upon discharge.
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