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Subcutaneous Levetiracetam and Sodium Valproate Use in Palliative Care Patients
Abstract:
Palliative care patients experience seizures in different stages of their disease and may not tolerate oral medications toward the end of life. Subcutaneous infusions of levetiracetam and sodium valproate are increasingly used off-label. This retrospective analysis (conducted from January 2019 to July 2020 in Australia) reports the effectiveness and adverse effects of levetiracetam and sodium valproate delivered via subcutaneous infusion. The doses ranged from 500 to 3000 mg/d of levetiracetam and 500 to 2500 mg/d of sodium valproate. The concentrations ranged from 20 to 83 mg/mL of levetiracetam and 20 to 50 mg/mL of sodium valproate. Subcutaneous levetiracetam was given for a median duration of 6.5 days, with no seizure recurrences in 75% of patients and no reported adverse effects in any patients. Subcutaneous sodium valproate was given for a median duration of 3.5 days, with no reported seizure recurrences in 83% of patients and one report of a localized skin reaction. This analysis suggests that subcutaneous levetiracetam and sodium valproate can effectively control seizures in palliative care populations, with minimal localized reactions.
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