自发性蛛网膜下腔出血(SAH)主要为脑动脉瘤所致,近年来发病率有逐渐上升的趋势。SAH继发癫发作并不少见,部分病例以癫首发或是早期的主要临床表现,文献报道的SAH继发癫发作的发病率波动在9%～20%之间[1]。SAH后癫可加重病情,对患者预后造成严重影响,导致患者病死率、致残率升高。丙戊酸钠逐渐成为目前临床应用广泛的一线广谱抗癫药,丙戊酸钠作为预防性抗癫 Spontaneous subarachnoid hemorrhage (SAH) mainly caused by cerebral aneurysm, the incidence in recent years there is a gradual upward trend. The incidence of secondary epileptic seizures in SAH is not uncommon. In some cases, the primary or early clinical manifestation of epilepsy is reported. The incidence of secondary epileptic seizures in the literature is reported to fluctuate between 9% and 20% [1]. Post-SAH epilepsy can aggravate the condition, causing serious impact on the prognosis of patients, leading to mortality and morbidity of patients increased. Sodium valproate has gradually become the first broad-spectrum broad-spectrum antiepileptic drug now widely used clinically, sodium valproate as a preventive antiepileptic