Delivery of care, seizure control and medication adherence in women with epilepsy during pregnancy.

PURPOSE: To evaluate service access for women with epilepsy (WWE) during pregnancy; to determine seizure frequency and rates of adherence to anti-seizure medication (ASM). METHODS: Between June 2019-June 2020, pregnant WWE within NHS Greater Glasgow and Clyde health-board were identified from the National Obstetric Register. A manual review of electronic patient records was undertaken to ensure diagnostic accuracy, as well as determine contact with epilepsy services and documented seizures. Medication dispensing records were obtained six months before and six months after midwifery booking and measures of ASM adherence calculated. RESULTS: Between June 2019-June 2020, 4592 women were registered with a pregnancy. Eighty-five (1.9%) were identified as having active epilepsy (generalised- 40/85 (47.0%), focal- 35/85 (41.2%), unclassified- 10/85 (11.8%)). Preconceptually, 42/85 WWE (49.4%) had input from epilepsy services. Only 59/85 (69.4%) were reviewed during pregnancy (First trimester- 21/59 (35.6%), Second trimester- 25/59 (42.4%) and Third trimester- 13/59 (22.0%)). Seizure occurrence was documented in 37/85 WWE (43.5%) during the antenatal/postnatal period. 71/85 WWE (83.5%) were prescribed ASM. Poor adherence was noted in 50/85 (58.9%) and a documented seizure recorded in 26/50 (52.0%) of these women. CONCLUSION: Too many WWE do not receive input from epilepsy services during pregnancy, leaving some with poor ASM adherence and continued seizures. We aim to use "near-live" obstetric and dispensing data to facilitate early identification of WWE, promoting timely access to epilepsy specialists. This will also provide an opportunity to address concerns regarding ASM safety and allow medication dose changes to be considered.

Medication adherence, utilization of healthcare services, and mortality of patients with epilepsy on opiate replacement therapy: A retrospective cohort study.

INTRODUCTION: Substance misuse is not uncommonly recognized in people with epilepsy (PWE). Mortality is significantly greater in those with comorbid substance misuse, but it remains unclear whether epilepsy care and management contribute to this. This cohort study aimed to compare the rates of mortality in PWE receiving opiate replacement therapy (ORT) and PWE alone, as well as evaluate their medication adherence, levels of engagement with epilepsy services as currently delivered, and utilization of unscheduled hospital care. MATERIAL AND METHODS: A 5-year historical cohort for PWE was identified and manually validated using electronic patient records registered with NHS Tayside. Overall incidence rates for mortality and contact with emergency health care services were calculated for PWE receiving ORT and PWE alone. Engagement with outpatient epilepsy services was also noted. Adherence to antiepileptic drugs (AEDs) was expressed in terms of medication possession ratio (MPR). RESULTS: Of the 1297 PWE attending a tertiary care epilepsy service, 68 (5.3%) PWE were receiving ORT. The mortality rate was significantly greater in PWE on ORT in comparison to PWE only (7.4% vs 1.7 %; P < 0.05; relative risk of death: 4.34, 95% CI 1.19-15.7), as well as the incidence of emergency healthcare services contact being higher (24.5% vs 17.7%; P < 0.05; incidence rate ratio: 1.39, 95% CI: 1.12-1.71). Poor adherence to AEDs was also more common in PWE on ORT (28.4% vs 23.5%; P = 0.02), as well as failure to engage with elective outpatient services (8.4% vs 3.0%; P < 0.05; rate ratio 2.77, 95% CI: 1.86-4.1). CONCLUSION: People with epilepsy on ORT are less likely to engage with elective epilepsy services as currently delivered or take AEDs as prescribed despite most of these patients having daily attendance at a community pharmacist. This may contribute to the significantly increased rates of mortality and unscheduled hospital care. Clinicians and policymakers should consider service redesign to meet the demands of this high-risk population in an attempt to reduce mortality and morbidity.