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Related Experiment Videos

Cerebral hemodynamics during spinal cord stimulation.

M Meglio1, B Cioni, M Visocchi

  • 1Instituto di Neurochirurgia, Universita Cattolica, Rome, Italy.

Pacing and Clinical Electrophysiology : PACE
|January 1, 1991
PubMed
Summary

Spinal cord stimulation (SCS) can increase cerebral blood flow (CBF) velocity and decrease cerebral vascular resistance, particularly with cervical stimulation. Transcranial Doppler sonography (TCD) effectively studied these hemodynamic changes.

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Area of Science:

  • Neurology
  • Medical Devices
  • Hemodynamics

Background:

  • Previous studies indicated increased cerebral blood flow (CBF) during spinal cord stimulation (SCS) using the 133Xenon inhalation technique.
  • Cerebral hemodynamics during SCS require further investigation with advanced non-invasive methods.

Purpose of the Study:

  • To investigate the effects of SCS on cerebral hemodynamics.
  • To assess changes in cerebral blood flow velocity and vascular resistance during SCS.

Main Methods:

  • Utilized transcranial Doppler sonography (TCD) to measure CBF velocity in middle cerebral arteries.
  • Recorded hemodynamic parameters in 26 patients with epidural electrodes (11 cervical, 15 thoracic) before and during SCS.

Main Results:

Related Experiment Videos

  • Cervical SCS (66.7% of patients) and thoracic SCS (29.4% of patients) were associated with decreased cerebral vascular resistance.
  • An increase in CBF velocity was observed simultaneously with decreased cerebral vascular resistance in a significant portion of patients during SCS.

Conclusions:

  • SCS can modulate cerebral hemodynamics, leading to increased CBF velocity and reduced vascular resistance.
  • TCD is a viable tool for evaluating SCS-induced changes in cerebral blood flow.