Improving the assessment of everyday cognitive functioning in patients with epilepsy by means of proxy reports

Psycho-socio-clinical profiles and quality of life in seizure disorders: A cross-sectional registry study

OBJECTIVE

This prospective study aimed at comparing quality of life (QoL) and psycho-socio-clinical profiles between patients with epilepsy, psychogenic nonepileptic seizures (PNES), and syncope. We also intended to identify predictors of QoL in these three seizure disorders.

METHODS

A total of 245 inpatients (epilepsy n = 182, PNES n = 50, syncope n = 13) from a tertiary epilepsy clinic were included. Information on QoL as well as on psychological, sociodemographic, and clinical profiles was retrieved using questionnaires and medical records. Group comparisons on QoL and psycho-socio-clinical profiles were performed via analyses of variance, chi-square tests, and related post hoc tests. Predictors of QoL in epilepsy and PNES were determined using general linear modeling, which was not possible for syncope due to a small sample size.

RESULTS

Patients with epilepsy, PNES, and syncope reported levels of QoL impairment that did not differ significantly between groups (p = 0.266). However, there were significant group differences regarding sex distribution (p < 0.001), seizure disorder duration (p = 0.004), seizure frequency (p = 0.019), current treatment with antiseizure medications (ASM) (p < 0.001), number of current ASM (p < 0.001), and adverse ASM events (p = 0.019). More depressive symptoms (p = 0.001), more adverse ASM events (p = 0.036), and unemployment (p = 0.046) (in this order) independently predicted a diminished QoL in epilepsy. For PNES, more depressive symptoms were the only independent predictor of lower QoL (p = 0.029).

CONCLUSIONS

Patients with epilepsy, PNES, and syncope experience similarly diminished QoL and show a general psycho-socio-clinical burden with a specific pattern for each seizure disorder diagnosis. Although clinical aspects play an undisputed role for QoL in epilepsy, the psychosocial aspects and consequences are equally, or for PNES probably even more, meaningful. A comprehensive approach to research and treatment of seizure disorders seems mandatory to increase QoL for these patients. More research on QoL in syncope is needed.

Self-rated executive dysfunction in adults with epilepsy and effects of a cognitive-behavioral intervention (HOBSCOTCH)

RATIONALE

Cognitive problems are common in adults with epilepsy and significantly affect their quality of life. HOBSCOTCH (HOme Based Self-management and COgnitive Training CHanges lives) was developed to teach problem-solving and compensatory memory strategies to these individuals. This study examined whether HOBSCOTCH is associated with improvement in specific aspects of subjective executive functions.

METHODS

Fifty-one adults, age 18-65, with epilepsy and subjective cognitive concerns were randomized to receive HOBSCOTCH (n = 31) or a care-as-usual control sample (n = 20). Participants completed the Behavior Rating Inventory of Executive Function-Adult version (BRIEF-A), as well as the Patient Health Questionnaire-9 (PHQ-9) to assess depression. Rates of elevated (i.e., T ≥ 65, impaired) BRIEF-A scores at baseline, as well as pre-post score changes for the BRIEF-A clinical scales were evaluated. Significance was set at α = 0.05, one-tailed, given our directional hypothesis.

RESULTS

At baseline, a considerable percentage of patients in the overall sample endorsed executive dysfunction on BRIEF-A scales: Inhibit = 28%, Shift = 51%, Emotional Control = 45%, Self-Monitor = 33%, Initiate = 35%, Working Memory = 88%, Plan/Organize = 45%, Task Monitor = 47%, Organization of Materials = 28%. Significant improvement was seen in mean T-scores for Inhibit, Shift, Initiate, and Working Memory in the treatment group, but only Working Memory improved in the control group. The control group endorsed worse task monitoring and organization of materials at baseline and follow-up. Change in depression was not observed for either group, and there was no association between changes in depression and BRIEF-A scores.

CONCLUSIONS

A sizeable subset of adults with epilepsy reported experiencing executive dysfunction in their everyday lives, especially for working memory. HOBSCOTCH resulted in amelioration of subjective executive functioning independent of changes in mood.

Factors associated with subjective cognitive function in epilepsy and psychogenic non-epileptic seizures

OBJECTIVE

To identify factors associated with subjective cognitive complaints in people with presumed seizure disorders referred for video electroencephalogram monitoring (VEM).

METHODS

Adult patients admitted for inpatient VEM were recruited. Objective cognitive function was measured with the Neuropsychiatry Unit Cognitive Screening Tool, subjective cognitive function with the Quality of Life in Epilepsy Inventory-89 subscales, and anxiety and depressive symptoms with the Hospital Anxiety and Depression Scale. Multivariate Bayesian general linear models were used to identify predictors of subjective cognitive function.

RESULTS

331 patients met inclusion criteria. Mean age was 39.3 years and 61.9 % patients were female. Diagnoses included epilepsy, psychogenic non-epileptic seizures (PNES) or both conditions. Depression, anxiety and objective cognitive function were predictors of subjective cognitive function across all domains. Depression was the strongest predictor of subjective memory and attention, whilst objective cognition was the strongest predictor of subjective language function. Mood also mediated the relationship between objective function and subjective function across all domains to varying extents; depression exerted the strongest effect of 22 % for the memory domain; conversely, language domain was least influenced by mood, with depression mediating 11 % and anxiety mediating only 9% of the subjective-objective relationship.

SIGNIFICANCE

Mood and objective cognitive function are both important contributors to subjective cognitive function for patients undergoing VEM. Clinicians should consider referring patients with cognitive complaints for both neurocognitive workup and neuropsychiatric evaluation. Future work may examine the effects of treating concomitant mood disorders on subjective cognitive function.