Vagal nerve stimulation: overview and implications for anesthesiologists

Area of Science:

• Neurology
• Neurosurgery
• Anesthesiology

Background:

• Vagal nerve stimulation (VNS) is an established adjunctive therapy for refractory epilepsy and major depression.
• Emerging research suggests VNS efficacy in obesity, Alzheimer's disease, and neuropsychiatric disorders.
• Increasing VNS indications expand patient eligibility for surgical implantation.

Purpose of the Study:

• To review current and experimental indications for VNS.
• To explore proposed therapeutic mechanisms of VNS.
• To discuss anesthetic considerations for initial VNS placement and for patients with pre-existing VNS devices.

Main Methods:

• Literature review of VNS indications, mechanisms, and perioperative management.
• Focus on anesthetic challenges during initial VNS implantation.
• Analysis of anesthetic management for patients with established VNS devices.

Main Results:

• VNS is approved for epilepsy and depression, with growing experimental applications.
• Potential mechanisms involve neuromodulation and neurotransmitter regulation.
• Perioperative complications and anesthetic strategies are critical for patient safety.

Conclusions:

• VNS is a versatile therapy with expanding applications.
• Anesthetic management requires careful consideration for both new and existing VNS implants.
• Further research into VNS mechanisms and perioperative care is warranted.