The American Academy of Neurology is issuing an updated guideline that recommends monitoring the spinal cord during spinal surgery and certain chest surgeries to help prevent paralysis, or loss of muscle function, related to the surgeries. The guideline, which was developed with the American Clinical Neurophysiology Society, is published in the February 21, 2012, print issue of Neurology, the medical journal of the American Academy of Neurology and also in the Journal of Clinical Neurophysiology.