Phenobarbital, primidone and sodium valproate in the prophylaxis of febrile convulsions

Area of Science:

• Pediatric Neurology
• Clinical Pharmacology

Background:

• Febrile convulsions are common in children.
• Effective prophylactic treatment is crucial to prevent recurrence.

Purpose of the Study:

• To compare the efficacy of phenobarbital, primidone, and different sodium valproate dosing regimens in preventing febrile convulsions.
• To investigate the impact of dosing frequency and daily dosage on sodium valproate's prophylactic effect.

Main Methods:

• A study involving 196 children with febrile convulsions.
• Treatment groups included phenobarbital, primidone, and various sodium valproate regimens (20-25 mg/kg/day b.i.d., 20-25 mg/kg/day t.i.d., 30 mg/kg/day b.i.d.).
• One-year recurrence rates of febrile convulsions were analyzed.

Main Results:

• No statistically significant difference in recurrence rates was observed among phenobarbital, primidone, and the studied valproate groups.
• The sodium valproate regimen of 20-25 mg/kg/day b.i.d. demonstrated a relatively inferior prophylactic effect compared to other valproate regimens.
• Higher daily fluctuations in plasma levels and lower minimum plasma levels were noted with b.i.d. dosing and lower daily dosages of sodium valproate.

Conclusions:

• Phenobarbital, primidone, and sodium valproate are similarly effective in preventing febrile convulsions.
• Dosing frequency and daily dosage significantly influence the prophylactic efficacy of sodium valproate.
• Twice-daily (b.i.d.) administration of sodium valproate may be less effective than thrice-daily (t.i.d.) administration due to plasma level fluctuations.