Why the study?
Does a ketamine-based anaesthetic improve the obtainability of somatosensory evoked potentials compared to an opioid-based anaesthetic in a pediatric patient undergoing spine fusion?
Does a ketamine-based anaesthetic improve the obtainability of somatosensory evoked potentials compared to an opioid-based anaesthetic in a pediatric patient undergoing spine fusion?
A ketamine-based anesthetic may facilitate the monitoring of somatosensory evoked potentials in patients where they are unobtainable with opioid-based anesthesia.
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May facilitate SSEP monitoring with ketamine when opioid anesthesia fails in pediatric spine surgery; hypothesis-generating and needs prospective validation.
Many anaesthetics effect the latency and amplitude of somatosensory evoked potentials (SSEP). We present a patient who underwent two anterior/posterior spine fusions (A/PSF) at age 11 and 12 years old after resection of a spinal astrocytoma. She did have residual neurologic deficits of her lower extremities. SSEPs were unobtainable during the first surgery using an opioid-based anaesthetic. A ketamine-based anaesthetic was used for the second surgery and SSEPs were easily monitored. No other factors seem to have changed between the two surgeries. The anaesthetic management during each procedure is reviewed and the contributions of other factors to SSEP monitoring discussed.
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Agarwal et al. (1998) studied this question.
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