Epilepsy is often controlled with
medication. However, this medication interferes with anesthetic management.
Because of potential heart involvement, a preoperative echocardiography and
an ECG may be useful. Evaluate renal function (echography, urea, creatinine,
electrolytes, CT scan), neurological function (clinical, CT scan, MRI, EEG), airway for
the presence of oral and/or laryngeal tumors (clinical, radiography, fiberoptic
endoscopy, CT scan), and respiratory function (chest radiograph, CT scan, endoscopy,
pulmonary function test, and arterial blood gas analysis).