Spinal_Cord_Monitoring

Question 1

Advantage of SEP over MEP

Answer 1

Unaffected by anesthetics

Question 2

What is the common most non-anesthetic-related cause of sustained changes in Intraoperative neurophysiological monitoring signals during spinal surgery

Answer 2

Patient positioning

Question 3

Criteria for SSEP possible significant neurological injury

Answer 3

10% increase in latency

50% decrease in amplitude (75% for tceMEP)

Question 4

What is the most specific early indicator of an Intraoperative injury to the spinal cord?

Answer 4

TceMEP

SSEPs do not have the sensitivity(25% v 100%) and specificity of MEPs(100% v 100%) Hilibrand JBJS 2004