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Continuous Lumbar Sympathetic Blockade Enhances the Effect of Lumbar Sympatholysis on Refractory Diabetic Neuropathy: A Randomized Controlled Trial

Introduction There are a number of options for the symptomatic treatment of peripheral neuropathy, but the overall treatment outcomes remain unsatisfactory. Methods A total of 60 patients with refractory diabetic neuropathy were randomly assigned to two groups. Patients in Group A were treated with...

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Published in:Diabetes therapy 2020-11, Vol.11 (11), p.2647-2655
Main Authors: Sun, Haiyan, He, Mingwei, Pang, Jinlei, Guo, Xiangfei, Huo, Yansong, Ma, Jun
Format: Article
Language:English
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Summary:Introduction There are a number of options for the symptomatic treatment of peripheral neuropathy, but the overall treatment outcomes remain unsatisfactory. Methods A total of 60 patients with refractory diabetic neuropathy were randomly assigned to two groups. Patients in Group A were treated with computed tomography (CT)-guided sympathetic neurolysis with alcohol, and patients in Group B were treated with a combined therapy of CT-guided catheterization to achieve continuous lumbar block for 4 weeks followed by neurolysis with alcohol administered via the catheter. The outcomes of these two treatment strategies were then analyzed in terms of pain relief, blood flow in the lower limb microcirculation, plasma levels of inflammatory mediators, and complications. Results The visual analog scale (VAS) pain scores of all patients after treatment decreased significantly at the different evaluation time points compared with pre-treatment values, with the intergroup analysis revealing that the VAS scores were lower in Group B patients than in Group A patients at all post-treatment time points. Skin temperature, capillary filling time, and blood oxygen saturation level were significantly improved in all patients at the 1- and 7-day post-treatment assessment compared to pre-treatment values, but patients in Group B showed a greater improvement. The plasma levels of inflammatory mediators were lower in all patients at the 7-day post-treatment assessment compared to pre-treatment values, with those of patients in Group B being statistically significantly lower than those of patients in Group A. Conclusion Combined treatment with continuous lumbar sympathetic block followed by neurolysis with alcohol provided more benefit in all assessed outcomes than sympathetic alcohol neurolysis alone. The results show that the procedures were associated with satisfactory safety outcomes and sustained analgesic effects, thereby providing clinical evidence supporting the use of this novel treatment for patients with painful diabetic neuropathy.
ISSN:1869-6953
1869-6961
DOI:10.1007/s13300-020-00918-7