• Paediatric anaesthesia · May 2006

    Case Reports

    Transient loss of motor-evoked responses associated with caudal injection of morphine in a patient with spondylolisthesis undergoing spinal fusion.

    • Peter R J Gibson, Sarah Johnston, Jim Lagopoulos, and John L Cummine.
    • Children's Hospital at Westmead, Westmead, Australia. pgibson@mail.usyd.edu.au
    • Paediatr Anaesth. 2006 May 1;16(5):568-72.

    AbstractA 7-year-old girl having posterior spinal fusion for Grade 3 anterior spondylolisthesis at the L5/S1 level was administered 2.5 mg of morphine in 10 ml saline via the caudal epidural route before surgery. Motor-evoked responses were markedly diminished in her lower limbs for 1 h following this but returned spontaneously. She suffered no neurological injury. The cause for this is postulated to be transient cauda equina compression from the volume of injectate. This complication of caudal injection has not been reported before. The possible mechanisms for this are discussed. We believe that significant L5/S1 spondylolisthesis should be considered a contraindication to the use of caudal epidural injections.

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