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Agreement of surgeon's perception of the effectiveness of spinal cord decompression with findings on postoperative magnetic resonance imaging for dogs surgically treated for intervertebral disk extrusion.
J Am Vet Med Assoc. 2020 01 15; 256(2):210-219.JA

Abstract

OBJECTIVE

To determine the accuracy of the surgeon's perception versus postoperative MRI findings in assessing the effectiveness of spinal cord decompression achieved in dogs surgically treated for intervertebral disk extrusion (IVDE) and whether postoperative MRI findings were more likely to be associated with various outcomes.

ANIMALS

68 dogs surgically treated for cervical or thoracolumbar IVDE.

PROCEDURES

Data on clinical, neurologic, pre- and postoperative MRI, and intraoperative findings as well as outcomes and recovery times (6-month follow-up period) were prospectively collected and compared between various groups.

RESULTS

54 (79%) dogs had thoracolumbar IVDE, and 14 (21%) had cervical IVDE. Median degree of spinal cord compression as assessed on transverse T2-weighted MRI images was 45.6% before surgery and 8.8% after surgery. The correlation between surgeons' perception (n = 3) and postoperative MRI findings for the degree of spinal cord decompression achieved was only fair (κ = 0.40). Unsatisfactory spinal cord decompression as assessed via postoperative MRI was associated with severity of preoperative neurologic grade and preoperative compression, thoracolumbar (vs cervical) IVDE, and ventral (vs ventrolateral or dorsolateral) circumferential distribution of extruded material. Satisfactory (vs unsatisfactory) decompression as assessed via MRI was associated with a lower postoperative neurologic grade, greater likelihood of a successful outcome, and lower mean recovery time.

CONCLUSIONS AND CLINICAL RELEVANCE

Results suggested that for dogs surgically treated for IVDE, the surgeon's perception of adequate spinal cord decompression may be less reliable than postoperative MRI findings. Postoperative MRI appeared particularly useful for dogs with a severe preoperative neurologic status, severe preoperative spinal cord compression, and thoracolumbar IVDE.

Authors

No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31910078

Citation

Tirrito, Federica, et al. "Agreement of Surgeon's Perception of the Effectiveness of Spinal Cord Decompression With Findings On Postoperative Magnetic Resonance Imaging for Dogs Surgically Treated for Intervertebral Disk Extrusion." Journal of the American Veterinary Medical Association, vol. 256, no. 2, 2020, pp. 210-219.
Tirrito F, Cozzi F, Bonaldi M, et al. Agreement of surgeon's perception of the effectiveness of spinal cord decompression with findings on postoperative magnetic resonance imaging for dogs surgically treated for intervertebral disk extrusion. J Am Vet Med Assoc. 2020;256(2):210-219.
Tirrito, F., Cozzi, F., Bonaldi, M., Conti, S., & Lombardo, R. (2020). Agreement of surgeon's perception of the effectiveness of spinal cord decompression with findings on postoperative magnetic resonance imaging for dogs surgically treated for intervertebral disk extrusion. Journal of the American Veterinary Medical Association, 256(2), 210-219. https://doi.org/10.2460/javma.256.2.210
Tirrito F, et al. Agreement of Surgeon's Perception of the Effectiveness of Spinal Cord Decompression With Findings On Postoperative Magnetic Resonance Imaging for Dogs Surgically Treated for Intervertebral Disk Extrusion. J Am Vet Med Assoc. 2020 01 15;256(2):210-219. PubMed PMID: 31910078.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Agreement of surgeon's perception of the effectiveness of spinal cord decompression with findings on postoperative magnetic resonance imaging for dogs surgically treated for intervertebral disk extrusion. AU - Tirrito,Federica, AU - Cozzi,Francesca, AU - Bonaldi,Martina, AU - Conti,Sara, AU - Lombardo,Rocco, PY - 2020/1/8/entrez PY - 2020/1/8/pubmed PY - 2020/7/2/medline SP - 210 EP - 219 JF - Journal of the American Veterinary Medical Association JO - J. Am. Vet. Med. Assoc. VL - 256 IS - 2 N2 - OBJECTIVE: To determine the accuracy of the surgeon's perception versus postoperative MRI findings in assessing the effectiveness of spinal cord decompression achieved in dogs surgically treated for intervertebral disk extrusion (IVDE) and whether postoperative MRI findings were more likely to be associated with various outcomes. ANIMALS: 68 dogs surgically treated for cervical or thoracolumbar IVDE. PROCEDURES: Data on clinical, neurologic, pre- and postoperative MRI, and intraoperative findings as well as outcomes and recovery times (6-month follow-up period) were prospectively collected and compared between various groups. RESULTS: 54 (79%) dogs had thoracolumbar IVDE, and 14 (21%) had cervical IVDE. Median degree of spinal cord compression as assessed on transverse T2-weighted MRI images was 45.6% before surgery and 8.8% after surgery. The correlation between surgeons' perception (n = 3) and postoperative MRI findings for the degree of spinal cord decompression achieved was only fair (κ = 0.40). Unsatisfactory spinal cord decompression as assessed via postoperative MRI was associated with severity of preoperative neurologic grade and preoperative compression, thoracolumbar (vs cervical) IVDE, and ventral (vs ventrolateral or dorsolateral) circumferential distribution of extruded material. Satisfactory (vs unsatisfactory) decompression as assessed via MRI was associated with a lower postoperative neurologic grade, greater likelihood of a successful outcome, and lower mean recovery time. CONCLUSIONS AND CLINICAL RELEVANCE: Results suggested that for dogs surgically treated for IVDE, the surgeon's perception of adequate spinal cord decompression may be less reliable than postoperative MRI findings. Postoperative MRI appeared particularly useful for dogs with a severe preoperative neurologic status, severe preoperative spinal cord compression, and thoracolumbar IVDE. SN - 1943-569X UR - https://www.unboundmedicine.com/medline/citation/31910078/Agreement_of_surgeon's_perception_of_the_effectiveness_of_spinal_cord_decompression_with_findings_on_postoperative_magnetic_resonance_imaging_for_dogs_surgically_treated_for_intervertebral_disk_extrusion_ L2 - http://avmajournals.avma.org/doi/full/10.2460/javma.256.2.210?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -