What drugs affect SSEP?
What drugs affect SSEP?
Somatosensory Evoked Potentials (SSEP) All intravenous agents (propofol, barbiturates, midazolam, opioids, ketamine) have minimal effect and are preferred. Standard dose neuromuscular blockers can be used.
What is Neuromonitoring during spinal surgery?
Neuromonitoring is a technology that allows the surgeon to assess spinal cord function during surgery through real-time feedback from individual nerve roots, motor tracts, and sensory tracts.
Does propofol affect SSEP?
Background. Propofol (P) and sevoflurane (S) are potential anaesthetic agents if electrophysiological monitoring is required during spinal surgery. They allow rapid recovery and do not depress cortical somatosensory evoked potentials (SSEP) as much as other agents.
What is SSEP latency?
Latency is the time between the stimulus and the detection. Latencies are long, intermediate and short. Short-latency occurs from the nerve stimulated or the brain stem are least affected by anesthetic agents.
What is the difference between SSEPs and visual evoked potentials?
Similar to SSEPs, visual evoked potentials are highly sensitive to the use of anesthetic agents More resistant to anesthetic influences than SSEPs and VEPs. According to Barash, a 1 ms increase in latency while the anesthetic regimen is held constant is considered significant. All volatile agents depress evoked potentials.
What is the difference between SSEP and MEP?
Sensory evoked potentials (SEPs) evaluate the integrity of ascending sensory tracts while motor evoked potentials (MEPs) deal with the functionality of descending motor pathways. Three SEP modalities are used clinically: somatosensory (SSEP), auditory (BAEP), and visual (VEP).
What are the different types of Sep modalities?
Three SEP modalities are used clinically: somatosensory (SSEP), auditory (BAEP), and visual (VEP). The amplitude of these potentials is much smaller than that of the background EEG and must be extracted from the surrounding “noise” using signal averaging.
What are SSEPs and where do they originate?
Described in terms of site of origin (stimulus), latency, and amplitude. SSEPs. Generally originate near the median/ulnar nerves or posterior tibials. Recording electrodes are on the scalp or spinal cord.
