Implantation of Electroencephalogram and Electrocardiogram Telemetry Devices in Neonatal Rabbit Kits

Area of Science:

• Neuroscience
• Cardiology
• Genetics

Background:

• Pathogenic variants in ion channel genes are a significant cause of sudden unexpected death in epilepsy (SUDEP).
• The precise mechanisms of SUDEP remain unclear, but may involve seizures, autonomic dysfunction, and cardiac arrhythmias.
• Shared expression of some ion channel genes in the brain and heart may heighten SUDEP risk in individuals with epilepsy and cardiac arrhythmias.

Purpose of the Study:

• To develop and demonstrate a novel surgical method for long-term, simultaneous electroencephalogram (EEG) and electrocardiogram (ECG) monitoring in neonatal rabbit kits.
• To establish a reliable animal model for studying the complex physiology of SUDEP.
• To facilitate research into the neural and cardiac electrophysiological events preceding SUDEP in epilepsy models.

Main Methods:

• Surgical implantation of a telemetry device in P14 neonatal rabbit kits (175-250 g).
• Detailed surgical approach, anesthesia, intraoperative monitoring, and postoperative care protocols were established.
• Focus on minimizing complications and ensuring long-term monitoring capability.

Main Results:

• Successful demonstration of surgical techniques for telemetry device implantation in neonatal rabbits.
• Achieved a low complication rate through meticulous surgical and postoperative management.
• Established a method for continuous, simultaneous EEG and ECG monitoring in a relevant animal model.

Conclusions:

• The developed surgical method enables robust, long-term simultaneous neural and cardiac monitoring in neonatal rabbits.
• This technique provides a valuable platform for investigating SUDEP mechanisms in epilepsy models.
• The rabbit model offers advantages over mouse models for studying human cardiac physiology relevant to SUDEP.