Efficacy of the Latest New Stimulation Patterns of Spinal Cord Stimulation for Intractable Neuropathic Pain Compared to Conventional Stimulation: Study Protocol for a Clinical Trial

Overview

Journal Trials

Publisher Biomed Central

Specialties General Medicine
Pharmacology

Date 2023 Sep 23

PMID 37742013

Authors

Takafumi Tanei

Satoshi Maesawa

Yusuke Nishimura

Yoshitaka Nagashima

Tomotaka Ishizaki

Masahiko Ando

Yachiyo Kuwatsuka

Atsushi Hashizume

Shimon Kurasawa

Ryuta Saito

Affiliations

Soon will be listed here.

Abstract

Background: Spinal cord stimulation (SCS) is one of the neuromodulation therapies for chronic neuropathic pain. The conventional paresthesia-based SCS involves the application of tonic stimulation that induces a sense of paresthesia. Recently, new SCS stimulation patterns without paresthesia have been developed. Differential target multiplexed (DTM) stimulation and fast-acting subperception therapy (FAST) stimulation are the latest paresthesia-free SCS patterns.

Methods: A single-center, open-label, crossover, randomized clinical trial to investigate the superiority of SCS using the latest new stimulation patterns over conventional tonic stimulation for neuropathic pain is planned. This study consists of two steps: SCS trial (first step) and SCS system implantation (second step). In the SCS trial, participants will be randomly assigned to 4 groups receiving stimulation, including tonic, DTM, and FAST. Each stimulation will then be performed for 2 days, and a visual analog scale (VAS) for pain will be evaluated before and after each stimulation pattern. A stimulation-off period for 1 day is set between each stimulation pattern to wash out the residual previous stimulation effects. Pain improvement is defined as more than 33% reduction in the pain VAS. The primary analysis will compare pain improvement between the new stimulation patterns and the conventional tonic stimulation pattern in the SCS trial. The secondary outcomes will be evaluated as follows: (1) the relationships between causative disease and improvement rate by each stimulation pattern; (2) comparison of pain improvement between the DTM and FAST stimulation patterns in all cases and by causative disease; (3) changes in assessment items preoperatively to 24 months after the implantation; (4) preoperative factors associated with long-term effects defined as continuing for more than 12 months; and (5) adverse events related to this study 3 months after the implantation.

Discussion: This study aims to clarify the effectiveness of the latest new stimulation patterns compared to the conventional tonic stimulation. In addition, which stimulation pattern is most effective for which kind of causative disease will be clarified.

Trial Registration: Japan Registry of Clinical Trials (jRCT) 1,042,220,094. Registered on 21 November 2022, and last modified on 6 January 2023. jRCT is an approved member of the Primary Registry Network of WHO ICTRP.

Citing Articles

Differential target multiplexed spinal cord stimulation in patients with Persistent Spinal Pain Syndrome Type II: a study protocol for a 12-month multicentre cohort study (DETECT).

Goudman L, De Smedt A, Eldabe S, Rigoard P, Billot M, Roulaud M BMJ Open. 2024; 14(11):e083610.

PMID: 39521475 PMC: 11551985. DOI: 10.1136/bmjopen-2023-083610.

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