The Outcome of Children with Intractable Seizures: A 3‐ to 6‐Year Follow‐up of 67 Children Who Remained on the Ketogenic Diet Less Than One Year

Abstract
To determine the long-term outcome of children with difficult-to-control seizures who remained on the ketogenic diet for 50% controlled at follow-up than were those managed with medications alone (p < 0.05). A statistically significant difference in long-term outcome was noted between those who responded while on the diet, even if they discontinued it before 1 year, and those who did not (p < 0.05), but no statistical correlation was found between length of time that they had remained on the diet and long-term prognosis. Almost half of the children who discontinued the diet during the first year had a decrease in seizures when assessed 3-6 years later. Twenty-two percent of these had become seizure free without surgery. We were unable to ascertain whether this may have been due to new medications. Those who saw some improvement while on the diet were more likely to have a favorable long-term outcome. Resective surgery, in children who were candidates, or vagal nerve stimulation (VNS) implantation, was more likely to result in significant seizure improvement than was management with medications alone. Whether or not the diet was effective, most families did not regret trying it and would recommend it to others.