Dunn reported that the outcome of the status epilepticus was not associated with acidosis on admission [9] . Imuekemhe et al. reported that mean serum lactate on admission was significantly higher in patients with prolonged febrile convulsions compared to the corresponding mean value in patients with only brief convulsions [18] . Conversely, Levin et al. noticed metabolic acidosis in HSES patients upon admission [2] . Ince et al. also reported that metabolic acidosis was the common laboratory value in HSES patients upon admission [15] . Little et al. reported a marked metabolic acidosis being refractory to fluid-resuscitate in HSES patients [6] . And Idro et al.