Journal
JAVMA-JOURNAL OF THE AMERICAN VETERINARY MEDICAL ASSOCIATION
Volume 240, Issue 5, Pages 555-562Publisher
AMER VETERINARY MEDICAL ASSOC
DOI: 10.2460/javma.240.5.555
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- American Kennel Club ACORN [1180-A]
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Objective-To examine associations between CSF biomarkers, initial neurologic dysfunction, and long-term ambulatory outcome in dogs with acute intervertebral disk herniation (IVDH). Design-Prospective clinical study. Animals-54 dogs with acute thoracolumbar IVDH and 16 clinically normal dogs. Procedures-For each dog, variables, including CSF myelin basic protein (MBP), lactate, calcium, glucose, and total protein concentrations; nucleated cell count; and creatine kinase (CK) and aspartate aminotransferase activities, were measured. For dogs with thoracolumbar IVDH, initial neurologic function was characterized by use of a modified Frankel score (MFS; determined on a scale of 0 to 5, where 0 represented paraplegia with no deep nociception and 5 represented paraspinal hyperesthesia only). Long-term follow-up was assessed. Results-Among dogs with thoracolumbar IVDH, those with CSF CK activity <= 38 U/L had a 35-fold increase in the odds of long-term ambulation, compared with the odds in dogs with CSF CK activity > 38 U/L, adjusting for neurologic functioning at the evaluation. The CSF lactate, calcium, and glucose concentrations and aspartate aminotransferase activity were not predictive of long-term ambulatory outcome. Data analysis revealed that long-term functional recovery was > 98% for affected dogs, regardless of their initial MFS, when CSF CK activity was <= 38 U/L and M B P concentration was <= 3 ng/mL. Conclusions and Clinical Relevance-In dogs with acute thoracolumbar IVDH, CSF CK activity and MBP concentration appeared to be prognostic indicators and, along with initial MFS, can be used to predict long-term ambulatory outcome. (J Am Vet Med Assoc 2012;240:555-562)
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