Cervical spinal cord stimulation improves neurological dysfunction induced by cerebral vasospasm

Area of Science:

• Neuroscience
• Neurosurgery
• Cerebrovascular Research

Background:

• Cerebral vasospasm following subarachnoid hemorrhage is a major cause of secondary neurological deficits.
• While spinal cord stimulation's effect on cerebral blood flow is known, its impact on vasospasm-induced neurological dysfunction remains unclear.
• Investigating novel therapeutic strategies for post-subarachnoid hemorrhage complications is crucial.

Purpose of the Study:

• To investigate neurological dysfunction induced by cerebral vasospasm after subarachnoid hemorrhage in a rabbit model.
• To determine if cervical spinal cord stimulation can improve this neurological dysfunction.

Main Methods:

• New Zealand albino rabbits were divided into sham and experimental groups.
• Subarachnoid hemorrhage was induced, followed by cervical epidural electrode placement.
• Motor evoked potentials (MEPs) were recorded to assess neurological function before and after spinal cord stimulation.

Main Results:

• MEP latencies increased and amplitudes decreased in the experimental group, indicating neurological dysfunction due to vasospasm.
• In contrast, MEPs remained unchanged in the sham group.
• Spinal cord stimulation significantly improved the altered MEP latencies and amplitudes in the experimental group.

Conclusions:

• Cervical spinal cord stimulation demonstrates a therapeutic effect on neurological dysfunction caused by cerebral vasospasm.
• Motor evoked potential recordings are a reliable electrophysiological tool for detecting cerebral vasospasm and evaluating treatment efficacy.