OBJECTIVES. We analyzed electroclinical features and evolution in nine patients with hemiparetic cerebral palsy associated with SE.
PATIENTS AND METHODS Nine patients with mean age 12.3 years and a follow up from 1 to 11 years were studied, analyzing etiology, neurological examination, psychometric evaluation, age at onset and semiology of epileptic seizures, EEGs and neuro-radiological findings, response to treatment and evolution.
RESULTS Etiologies were: porencephaly in 4 cases, hipoxic-ischemic encephalopathy in 2, bacterial meningitis in 1, herpetic encephalitis in 1 and meningo-encephalitis in the last. All cases had mental retardation. Mean age at onset of epileptic seizures was 4 years. Mean age at onset of startle seizures was 6. The startle seizures were characterized by sudden tonic contractions of the paretic hemibody, provoked by auditory stimulus in 6, somatosensory in 2 and both types of stimulus in 1. Falls were observed in 6 patients. Seizures were daily and always when awake. Unprovoked focal seizures with or without secondary generalization were found in 8 cases, and in 6 they presented previously to the startle seizures. Interictal EEGs showed unilateral spikes in 3, bilateral spikes in 3 and generalized polyspike-wave paroxysms in the other three cases. Ictal EEGs were obtained in 8 of the 9 patients and showed diffuse paroxysms of rhythms 6-11 Hz. Cerebral CT scan and/or MRI revealed extensive unilateral encephalomalacia in 5 and porencephaly in 4. The different antiepileptic schedules were unsuccessful in all cases. Surgery was performed in two patients. They are free of seizures after 1 to 4 years of follow up. CONCLUSION. SE should be considered as a distinctive epileptic syndrome or a particular electro-clinical evolution in patients with a large unilateral brain lesion associated with provoked reflex seizures usually refractory to antiepileptic drugs. Epileptic surgery should be considered.
KeywordsCerebral palsyHemiparesisRefractory seizuresStartle epilepsyCategoriesEpilepsias y síndromes epilépticosNervios periféricos, unión neuromuscular y músculo
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