Review Question - QID 210789

A 5-year-old boy presents to his pediatrician along with his parents due to episodes of “staring into space.” This symptom occurs several times a day and lasts only a few seconds. During these episodes, the boy does not respond to verbal or physical stimulation, and his parents deny him falling down or shaking. After the episode, the boy returns to his normal activity and is not confused. The parents deny any history of head trauma, recent medication use, or infection. His temperature is 99.2°F (37.3°C), blood pressure is 107/62 mmHg, pulse is 98/min, respirations are 19/min, and oxygen saturation is 98% on room air. A neurological exam is unremarkable. His episode is precipitated as he blows at a pinwheel. An EEG is performed, which shows 3-Hz spike and waveform. Which of the following is the most appropriate treatment option for this patient?