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Studies highlight benefits and risks of ketogenic diet for refractory epilepsy

Studies highlight benefits and risks of ketogenic diet for refractory epilepsy

21epilepsy-span-articleLargeWASHINGTON – The ketogenic diet is well established as an effective treatment for patients with refractory epilepsy, and although studies presented at the annual meeting of the American Epilepsy Society confirm its value for both children and adults, others raise important concerns.

Researchers from the University of Missouri – Kansas City (UMKC), for example, reported that adhering to a ketogenic diet (KGD) reduced the number of emergency department visits and hospitalizations, and decreased the length of epilepsy-related hospital stays in children with pharmacologically refractory epilepsy.

In 98 children from the Children’s Mercy Hospital–UMKC database who had complete records available and who remained on the diet for at least 6 months, the number of ED visits decreased by 64%, and the charges associated with those visits decreased by 50% from the 12 months before diet initiation to the 12 months after, Dr. Anastasia Luniova reported in a poster at the meeting.

After an initial increase in the total number of hospitalizations and the number of hospital days, due largely to stays associated with diet initiation, the number of hospitalizations decreased by 61% and the number of hospital days decreased by 66%. Associated charges decreased by 47%.

Children in this retrospective chart study from a level IV pediatric epilepsy center included 62 boys and 36 girls with an average age of 4.4 years at initiation of the ketogenic diet. The average diet duration was 31.7 months.

“This study provides evidence that the KGD has a positive impact in children with pharmacologically refractory epilepsy by reducing the number of ED visits, numbers of hospitalizations, as well as length of hospital stay related to epilepsy, and associated comorbidities. … Further data analysis is necessary for detailed cost-effectiveness assessment of the KGD,” Dr. Luniova wrote.

The KGD was also safe and effective in a study of 10 adults with refractory status epilepticus, Dr. John C. Probasco of Johns Hopkins University, Baltimore, reported in a poster.

While further studies are needed to determine the applicability of a KGD in adult patients, as well as the long-term outcomes, the findings suggest it is safe and feasible, Dr. Probasco said.

The retrospective case study at four medical centers included patients over age 17 years with status epilepticus that continued for at least 24 hours after initiation of general anesthetic medication, or that recurred following weaning from, or discontinuation of, the treatment. The patients, including four men and six women, had a median age of 33 years, and seven had encephalitis. Prior to KGD initiation, the median duration of status epilepticus was 21.5 days, and the median number of antiepileptic drugs (AEDs) used was seven.

Nine of the 10 patients achieved ketosis within a median of 3 days, and all patients had cessation of status epilepticus within 3 days. Furthermore, seven had clinical and/or electrographic seizure resolution within 7 days, and nine had such resolution within 1 month. At discharge, the median number of antiepileptic drugs prescribed was four, Dr. Probasco reported.

Another study demonstrated the beneficial effects of a KGD on immunoglobulin levels and infection frequency.

“In addition to its known side effects, the [KGD] is considered to lead to an increase in infection frequency causing possible neutrophil function impairment and the reason behind this has not yet been explained completely,” wrote Dr. Orkide Güzel of Izmir (Turkey) Dr. Behçet Uz Children’s Hospital.

READ MORE: http://www.familypracticenews.com/news/child-adolescent-medicine/single-article/studies-highlight-benefits-and-risks-of-ketogenic-diet-for-refractory-epilepsy/b7e65683ae5585f41cbca2f28842aea7.html

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