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- Yun-Joung Han, Myoung No Lee, Min Ji Cho, Hue Jung Park, Dong Eon Moon, and Young Hoon Kim.
- Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea.
- Pain Physician. 2016 Sep 1; 19 (7): E1035-40.
BackgroundEpidural neuroplasty using a Racz catheter has a therapeutic effect. Studies have found no correlation between foraminal stenosis and the outcome of epidural neuroplasty, which is thought to depend on contrast runoff.ObjectiveTo examine the correlation between the contrast spread pattern and pain reduction in cervical epidural neuroplasty using a Racz catheter.Study DesignRetrospective study.SettingAn interventional pain-management practice in a university hospital.MethodsFluoroscopic images were reviewed retrospectively. The spread of contrast from the neural foramen to a nerve root was called contrast runoff. If the contrast did not spread in this manner, then there was no contrast runoff. We defined successful epidural neuroplasty as a 50% or greater reduction from the pre-procedure numeric rating scale (NRS) score for total pain, and an at least 40% reduction in the neck pain and disability scale (NPDS) score.ResultsThis study reviewed 169 patients. Among the patients who had a contrast runoff pattern, the epidural neuroplasty was rated as successful in 96 (74.4%), 97 (75.2%), 86 (66.7%), and 79 (61.2%) cases one, 3, 6, and 12 months after the procedure, respectively. When there was no contrast runoff, the epidural neuroplasty was successful in 12 (30%), 12 (30%), 10 (25%), and 10 (25%) cases at one, 3, 6, and 12 months after the procedure (P < 0.001). Logistic regression of the contrast spread pattern and predicting successful epidural neuroplasty gave similar results. Patients with a contrast runoff pattern had odds ratios of 6.788, 7.073, 6.000, and 4.740 at one, 3, 6, and 12 months, respectively (P < 0.001).LimitationsThis study lacked a control group, and the patients were not classified by their diagnosed disease, such as spinal stenosis, herniated nucleus pulposus, and post-spinal surgery syndrome.ConclusionsCervical epidural neuroplasty with a contrast runoff pattern had a higher success rate. Contrast runoff should be observed during neuroplasty, even in the presence of foraminal stenosis.Key WordsCervical spinal pain, contrast, contrast runoff, epidural neuroplasty, percutaneous adhesiolysis, Racz catheter.
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