Reduced long-term mortality after successful resective epilepsy surgery: a population-based study.

Area of Science:

• Neurology
• Neurosurgery
• Public Health

Background:

• Investigated mortality rates in patients with drug-resistant epilepsy who underwent resective surgery versus those who did not.
• Hypothesized that epilepsy surgery leads to reduced long-term mortality.
• Utilized data from the Swedish National Epilepsy Surgery Register and Cause of Death Register.

Purpose of the Study:

• To compare all-cause and epilepsy-related mortality between operated and non-operated patients with drug-resistant epilepsy.
• To identify predictors of mortality and sudden unexpected death in epilepsy (SUDEP) in this cohort.

Main Methods:

• Analyzed data from 1329 operated and 666 non-operated patients with drug-resistant epilepsy.
• Follow-up periods ranged from 2 to 20 years.
• Employed Kaplan-Meier and Cox regression analyses; autopsy reports were reviewed for SUDEP cases.

Main Results:

• Sudden unexpected death in epilepsy (SUDEP) constituted 30% of all deaths.
• Surgery was associated with a 30% reduction in all-cause mortality (HR 0.7), persisting over 15 years.
• For operated patients, persistent seizures (37%) and living alone were mortality risk factors; seizure freedom improved survival.

Conclusions:

• Resective epilepsy surgery is linked to lower all-cause mortality in patients with drug-resistant epilepsy.
• Seizure freedom post-surgery is the most significant factor for reducing both all-cause mortality and SUDEP.
• Findings support epilepsy surgery as a mortality-reducing intervention in carefully selected patients.