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Intrathecal Morphine on Transcranial Electric Motor-Evoked Potentials

NCT00596609 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 36

Last updated 2009-09-16

No results posted yet for this study

Summary

Patients undergoing posterior spinal fusion (PSF) procedures for scoliosis are at risk for iatrogenic neurologic injury of the spinal cord and/or spinal nerve roots during surgical correction of the abnormal spinal curvature. The degree of neurologic injury can range from minor sensory deficits to complete paraplegia. Surgeons at CHOP utilize neurophysiologists to identify impending neurologic injury. These consultants monitor spinal cord pathways by recording and analyzing evoked potentials during the operation. Evoked potentials are low voltage electrical signals generated in response to transcranial or transcutaneous electrical stimulation of motor and sensory neural pathways.

Some patients undergoing PSF receive an injection of morphine into the cerebrospinal fluid during the operation. This intrathecal (IT) morphine has potent analgesic effects. While most commonly used anesthetic agents have well-characterized effects on evoked potentials, little data exists on the effects of IT morphine on transcranial electric motor-evoked potentials (TceMEPs).

This is a prospective observational study to characterize the effects of IT morphine on TceMEPs.

Conditions

  • Trauma, Nervous System

Interventions

DRUG

Intrathecal Morphine

* In the IT morphine group, prior to IT morphine injection (within 15 minutes of the injection), the neurophysiologist will be asked to obtain a set of TceMEP recordings. The recordings collected at this time will be labeled "Baseline." These will serve as controls for subsequent recording comparisons. * In the IT morphine group, the time of IT morphine injection will be recorded, as well as the dose. A timer will be started. The neurophysiologist will then be asked to collect four additional sets of TceMEP recordings, at 5, 10, 20, and 30 minutes after morphine injection.

Sponsors & Collaborators

Principal Investigators

  • Paul Stricker, MD · Children's Anesthesiology Associates, Ltd.

Eligibility

Min Age
11 Years
Max Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2007-08-31
Primary Completion
2009-04-30
Completion
2009-04-30

Countries

  • United States

Study Locations

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Entities

Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00596609 on ClinicalTrials.gov