Abstract:
:Six neonates with prolonged, intractable seizures were treated with valproic acid (VPA). Each patient had received maximum doses of phenobarbital (greater than 40 micrograms/ml), and five patients received at least two additional anticonvulsants, without success. Seizure activity was controlled in five of six (83%) cases. In four cases, all other anticonvulsants could be withdrawn, and seizures were controlled on VPA monotherapy. VPA was discontinued in three patients because of VPA-induced hyperammonemia. VPA pharmacokinetic measurements were as follows: for total VPA, volume of distribution (V) = 0.40 l/kg (range, 0.36 to 0.47 l/kg), serum clearance (Cl) = 14.4 ml/h/kg (5.5 to 18.2 ml/h/kg), half-life (T1/2) = 26.4 hours (8.6 to 48.5); for unbound VPA, V = 2.02 l/kg (1.14 to 2.44 l/kg), Cl = 108.9 ml/h/kg (42.0 to 252.0 ml/h/kg). T1/2 = 17.6 hours (6.7 to 34.2). VPA free fraction ranged from 11.3 to 31.6% (mean, 19.2%).
journal_name
Neurologyjournal_title
Neurologyauthors
Gal P,Oles KS,Gilman JT,Weaver Rdoi
10.1212/wnl.38.3.467subject
Has Abstractpub_date
1988-03-01 00:00:00pages
467-71issue
3eissn
0028-3878issn
1526-632Xjournal_volume
38pub_type
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