PMID- 37486284 OWN - NLM STAT- MEDLINE DCOM- 20231027 LR - 20231027 IS - 1525-1403 (Electronic) IS - 1094-7159 (Linking) VI - 26 IP - 7 DP - 2023 Oct TI - A Novel, Paresthesia-Free Spinal Cord Stimulation Waveform for Chronic Neuropathic Low Back Pain: Six-Month Results of a Prospective, Single-Arm, Dose-Response Study. PG - 1412-1423 LID - S1094-7159(23)00697-9 [pii] LID - 10.1016/j.neurom.2023.06.007 [doi] AB - OBJECTIVES: The aim of this prospective, single-blinded, dose-response study was to evaluate the safety and efficacy of a novel, paresthesia-free (subperception) spinal cord stimulation (SCS) waveform designed to target dorsal horn dendrites for the treatment of chronic neuropathic low back pain (LBP). MATERIALS AND METHODS: Twenty-seven participants with chronic neuropathic LBP were implanted with a commercial SCS system after a successful trial of SCS therapy. Devices were programmed to deliver the investigative waveform (100 Hz, 1000 mus, T9/T10 bipole) at descending stimulation perception threshold amplitudes (80%, 60%, 40%). Programs were evaluated at six, ten, and 14 weeks, after which participants selected their preferred program, with more follow-up at 26 weeks (primary outcomes). Participants were blinded to the nature of the programming. Pain score (visual analog scale [VAS]), Brief Pain Inventory (BPI), quality of life (EQ-5D-5L), and health status (36-Item Short Form [SF-36]) were measured at baseline and follow-ups. Responder rate, treatment satisfaction, clinician global impression of change, and adverse events (AEs) also were evaluated. RESULTS: Mean (+/- SD) baseline VAS was 72.5 +/- 11.2 mm. At 26 weeks (n = 26), mean change from baseline in VAS was -51.7 mm (95% CI, -60.7 to -42.7; p < 0.001), with 76.9% of participants reporting >/=50% VAS reduction, and 46.2% reporting >/=80% VAS reduction. BPI, EQ-5D-5L, and SF-36 scores were all statistically significantly improved at 26 weeks (p < 0.001), and 100% of participants were satisfied with their treatment. There were no unanticipated AEs related to the study intervention, device, or procedures. CONCLUSIONS: This novel, paresthesia-free stimulation waveform may be a safe and effective option for patients with chronic neuropathic LBP eligible for SCS therapy and is deliverable by all current commercial SCS systems. CLINICAL TRIAL REGISTRATION: This study is registered on anzctr.org.au with identifier ACTRN12618000647235. CI - Copyright (c) 2023 International Neuromodulation Society. Published by Elsevier Inc. All rights reserved. FAU - Russo, Marc A AU - Russo MA AD - Hunter Pain Specialists, Broadmeadow, New South Wales, Australia; Genesis Research Services, Broadmeadow, New South Wales, Australia; University of Newcastle, School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, Callaghan, New South Wales, Australia. Electronic address: algoguy@gmail.com. FAU - Volschenk, Willem AU - Volschenk W AD - Hunter Pain Specialists, Broadmeadow, New South Wales, Australia; Genesis Research Services, Broadmeadow, New South Wales, Australia. FAU - Bailey, Dominic AU - Bailey D AD - Genesis Research Services, Broadmeadow, New South Wales, Australia. FAU - Santarelli, Danielle M AU - Santarelli DM AD - Genesis Research Services, Broadmeadow, New South Wales, Australia. FAU - Holliday, Elizabeth AU - Holliday E AD - Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia. FAU - Barker, Daniel AU - Barker D AD - Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia. FAU - Dizon, Jason AU - Dizon J AD - Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia. FAU - Graham, Brett AU - Graham B AD - University of Newcastle, School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, Callaghan, New South Wales, Australia. LA - eng PT - Clinical Trial PT - Journal Article DEP - 20230722 PL - United States TA - Neuromodulation JT - Neuromodulation : journal of the International Neuromodulation Society JID - 9804159 SB - IM MH - Humans MH - *Chronic Pain/diagnosis/therapy MH - *Low Back Pain/diagnosis/therapy MH - Paresthesia/diagnosis/therapy MH - *Peripheral Nervous System Diseases MH - Prospective Studies MH - Quality of Life MH - Spinal Cord MH - *Spinal Cord Stimulation/adverse effects/methods MH - Treatment Outcome OTO - NOTNLM OT - Dorsal horn OT - low back pain OT - neuropathic pain OT - spinal cord stimulation OT - stimulation waveform EDAT- 2023/07/24 13:07 MHDA- 2023/10/23 00:43 CRDT- 2023/07/24 10:32 PHST- 2023/04/25 00:00 [received] PHST- 2023/06/08 00:00 [revised] PHST- 2023/06/18 00:00 [accepted] PHST- 2023/10/23 00:43 [medline] PHST- 2023/07/24 13:07 [pubmed] PHST- 2023/07/24 10:32 [entrez] AID - S1094-7159(23)00697-9 [pii] AID - 10.1016/j.neurom.2023.06.007 [doi] PST - ppublish SO - Neuromodulation. 2023 Oct;26(7):1412-1423. doi: 10.1016/j.neurom.2023.06.007. Epub 2023 Jul 22.