26 Sept 2022

Participants sought: How does epilepsy affect control of blood pressure?

How does Vagal Nerve Stimulation reduce epileptic seizures?
The Baker Heart and Diabetes Institute is seeking participants for a research study to compare how epilepsy affects the control of blood pressure. We want to find out how Vagal Nerve Stimulation (VNS), an effective treatment for drug- resistant epilepsy, works to reduce seizures and to reduce the elevated cardiovascular risk associated with epilepsy.

Who can participate? 

To be eligible, you must be:

  • aged 18–40 years
  • currently receiving treatment for epilepsy with an implanted VNS device
  • or a healthy participant without epilepsy

What is involved?

This study involves inserting a fine needle (microelectrode) either into (i) the vagus nerve in the neck or (ii) the peroneal nerve at the side of the knee. These procedures are not considered painful and are well-tolerated. You will be invited to participate in session (i) and session (ii) on separate days.

The tests we will be conducting are:

  • recording from the vagus nerve in the neck in participants with an implanted VNS device to identify the types of nerve fibres excited by vagal nerve stimulation
  • recording from the vagus nerve in the neck to increase our understanding of how different nerve fibres supplying the heart and lungs behave in healthy controls and in epilepsy
  • recording muscle sympathetic nerve activity (MSNA) from the peroneal nerve at the knee at rest and during standard manoeuvres that affect blood pressure
  • electrocardiogram (ECG)
  • non-invasive continuous blood pressure recorded from the fingers
  • respiration

Why should you get involved? 

  • You will contribute to ground-breaking new research that will help us understand how epilepsy increases cardiovascular risk and how VNS works
  • You will be reimbursed for your time.
  • This research project has been approved by the Alfred Hospital Ethics Committee.

To find out more, contact:

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