Prevalence and Risk Factors of Peri-ictal Autonomic Changes in Children With Temporal Lobe Seizures

Area of Science:

• Pediatric Neurology
• Epileptology
• Autonomic Nervous System Research

Background:

• Autonomic dysfunction is a recognized complication of epilepsy.
• Temporal lobe epilepsy (TLE) is the most common type of focal epilepsy in children.
• Understanding autonomic changes in pediatric TLE is crucial for patient management.

Purpose of the Study:

• To determine the prevalence of autonomic dysfunction signs and symptoms during seizures in children with temporal lobe onset.
• To identify potential risk factors associated with peri-ictal autonomic changes in this population.

Main Methods:

• A retrospective review of medical records was conducted for pediatric patients admitted to a single-center epilepsy monitoring unit.
• Data collected included patient demographics, epilepsy characteristics, ictal EEG findings, neuroimaging results, and seizure semiology.
• Autonomic changes observed during seizures were systematically recorded and analyzed.

Main Results:

• The study identified 49 children (55% male, median age 10.1 years) with temporal lobe onset seizures.
• Peri-ictal autonomic changes were observed in 66% of patients and 53% of evaluated seizures.
• The most frequent autonomic changes included tachycardia (51%), oxygen desaturation (33%), and salivation (27%). Bradycardia was rare (2%).

Conclusions:

• Peri-ictal autonomic changes are frequent in children experiencing temporal lobe seizures.
• Despite their high prevalence, these autonomic disturbances seldom require clinical intervention.
• Further research may explore the specific mechanisms and long-term implications of these findings.