OBJECTIVE: First, to determine whether patients with chronic temporal lobe epilepsy have a different cognitive trajectory compared to control subjects over a prospective 4-year interval; second, to determine the proportion of patients who exhibit abnormal cognitive change and their profile of demographic, clinical epilepsy, and baseline quantitative magnetic resonance imaging characteristics; and third, to determine the most vulnerable cognitive domains. METHODS: Participants with chronic temporal lobe epilepsy (n = 46) attending a tertiary referral clinic and healthy control subjects (n = 65) underwent neuropsychological assessment and reevaluation 4 years later. Analysis of test-retest patterns identified individual patients with adverse cognition outcomes. RESULTS: The prospective cognitive trajectory of patients with chronic temporal lobe epilepsy differs from age- and sex-matched healthy control subjects. Lack of practice effects is common, but frank adverse cognitive outcomes are observed in a subset of patients (20-25%), particularly in vulnerable cognitive domains that include memory. Cognitive declines are associated with a profile of abnormalities in baseline quantitative magnetic resonance volumetrics, lower baseline intellectual capacity, as well as longer duration of epilepsy and older chronological age. INTERPRETATION: Cognitive prognosis is poor for a subset of patients characterized by chronicity of epilepsy, older age, lower intellectual ability, and more baseline abnormalities in quantitative magnetic resonance volumetrics.
OBJECTIVE: First, to determine whether patients with chronic temporal lobe epilepsy have a different cognitive trajectory compared to control subjects over a prospective 4-year interval; second, to determine the proportion of patients who exhibit abnormal cognitive change and their profile of demographic, clinical epilepsy, and baseline quantitative magnetic resonance imaging characteristics; and third, to determine the most vulnerable cognitive domains. METHODS:Participants with chronic temporal lobe epilepsy (n = 46) attending a tertiary referral clinic and healthy control subjects (n = 65) underwent neuropsychological assessment and reevaluation 4 years later. Analysis of test-retest patterns identified individual patients with adverse cognition outcomes. RESULTS: The prospective cognitive trajectory of patients with chronic temporal lobe epilepsy differs from age- and sex-matched healthy control subjects. Lack of practice effects is common, but frank adverse cognitive outcomes are observed in a subset of patients (20-25%), particularly in vulnerable cognitive domains that include memory. Cognitive declines are associated with a profile of abnormalities in baseline quantitative magnetic resonance volumetrics, lower baseline intellectual capacity, as well as longer duration of epilepsy and older chronological age. INTERPRETATION: Cognitive prognosis is poor for a subset of patients characterized by chronicity of epilepsy, older age, lower intellectual ability, and more baseline abnormalities in quantitative magnetic resonance volumetrics.
Authors: Bruce Hermann; Michael Seidenberg; Mark Sager; Cynthia Carlsson; Barry Gidal; Raj Sheth; Paul Rutecki; Sanjay Asthana Journal: Epilepsia Date: 2007-11-21 Impact factor: 5.864
Authors: Zachary M Grinspan; Erika L Abramson; Samprit Banerjee; Lisa M Kern; Rainu Kaushal; Jason S Shapiro Journal: AMIA Annu Symp Proc Date: 2013-11-16