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Transauricular Vagus Nerve Stimulation and Electroencephalographic Assessment in Disorders of Consciousness
04:04

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Vagus nerve stimulation therapy induces changes in heart rate of children during sleep

Boubker Zaaimi1, Reinhard Grebe, Patrick Berquin

  • 1GRAMFC, Faculté de Médecine, Amiens, France. boubker.zaaimi@u-picardie.fr

Epilepsia
|May 19, 2007
PubMed

Insights

Vagus nerve stimulation (VNS) therapy for epilepsy in children caused varied heart rate changes during stimulation. These cardiorespiratory variations may help optimize VNS treatment parameters.

Area of Science:

  • Pediatric Neurology
  • Epilepsy Management
  • Autonomic Nervous System Function

Background:

  • Pharmacoresistant epilepsy affects children, necessitating alternative treatments.
  • Vagus nerve stimulation (VNS) therapy is an established option for refractory epilepsy.
  • Understanding VNS effects on autonomic function is crucial for patient care.

Purpose of the Study:

  • To analyze heart rate (HR) variations in children undergoing VNS therapy for pharmacoresistant epilepsy.
  • To investigate the relationship between VNS and cardiorespiratory changes during sleep.

Main Methods:

  • Polysomnography was used to record ECG, EEG, respiratory, and VNS data in ten children.
  • Heart rate changes during VNS stimulation were compared to baseline measurements.
  • Data were analyzed for variations during stimulation, sleep stages (REM/NREM), and between individuals.

Main Results:

  • Significant heart rate increases were observed in 4 children during VNS, with decreases in 1 and no change in 4.
  • Heart rate variability occurred within stimulation cycles and differed between REM and NREM sleep.
  • Concomitant respiratory changes, including increased frequency and decreased amplitude, were noted.

Conclusions:

  • VNS therapy in children with epilepsy is associated with cardiorespiratory variations.
  • These findings highlight the complex autonomic responses to VNS.
  • Further research into these variations could lead to optimized VNS therapy parameters.
Abstract

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