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  • Title: Sublingual lorazepam as rescue therapy for seizure emergencies in adults.
    Author: Lelis IR, Krauss GL.
    Journal: Epilepsy Behav; 2023 Aug; 145():109294. PubMed ID: 37406555.
    Abstract:
    OBJECTIVE: Limited acute home treatments are available for patients with prolonged (>5 minutes) or repetitive (≥2 in 24 hours) seizures. While this early seizure treatment may reduce the need for emergency care, intermittent intranasal benzodiazepine formulations are expensive and rectal diazepam administration is often socially unacceptable. We determined whether caregivers could use sublingual lorazepam oral concentrate solution effectively as acute treatment for adults with prolonged and repetitive seizures. METHODS: Patients prescribed sublingual lorazepam solution at the Johns Hopkins Epilepsy Center for acute seizure treatment during a 5-year period (2012-2017) were screened. We determined clinical history of seizure patterns and number of antiseizure medications (ASMs) through patient and caregiver surveys, and we verified this history in patients' medical records and charts. During a 2-year span (2017-2018), patients and caregivers were surveyed on responses to their most recent use of sublingual lorazepam solution, including seizure cessation (prolonged seizure stopping <5 minutes or ≤1 repetitive seizure), presence of sedation and adverse events within 24 hours of administration, and whether refrigeration limited use. RESULTS: In total, 52 patients used sublingual lorazepam for treatment of acute seizures during the study period (median dose 1 mg, range 0.5 to 2 mg). Of them, 48 patients participated in treatment survey interviews. Family caregivers usually administered lorazepam (88%); 3 self-administered. Patients were surveyed on responses to their most recent use of sublingual lorazepam treatment: 66% (23/35) of patients with repetitive seizures reported no further seizure activity after administering treatment; 70% (7/10) with prolonged seizures reported seizure activity ceased within 5 minutes of treatment. Three patients treated auras and had no seizures. There were no serious adverse events during most recent use: 31% of patients developed moderate/severe sedation. Of note, 98% refrigerated lorazepam, often with coolers; 44%, however, said this limited treatment access. There was high treatment satisfaction; 79% reported that having the emergency treatment available made them feel safer. SIGNIFICANCE: This patient survey and retrospective chart review demonstrates that home treatment with sublingual lorazepam solution may be effective for interrupting prolonged and repetitive seizures. No patients had sedation complications with home doses of 0.5 to 2 mg, and patients report high satisfaction with the treatment.
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