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http://dx.doi.org/10.3340/jkns.2021.0145

Clinical Outcomes after Spinal Cord Stimulation According to Pain Characteristics  

Ha, Jong-Ho (Department of Neurosurgery, Soonchunhyang University Bucheon Hospital, Soonchunhyang University)
Huh, Ryoong (Department of Neurosurgery, Incheon St. Mary's Hospital, The Catholic University of Korea)
Kim, Shin-Gyeom (Department of Psychiatry, Soonchunhyang University Bucheon Hospital, Soonchunhyang University)
Im, Soo-Bin (Department of Neurosurgery, Soonchunhyang University Bucheon Hospital, Soonchunhyang University)
Jeong, Je Hoon (Department of Neurosurgery, Soonchunhyang University Bucheon Hospital, Soonchunhyang University)
Hwang, Sun-Chul (Department of Neurosurgery, Soonchunhyang University Bucheon Hospital, Soonchunhyang University)
Shin, Dong-Seong (Department of Neurosurgery, Soonchunhyang University Bucheon Hospital, Soonchunhyang University)
Kim, Bum-Tae (Department of Neurosurgery, Soonchunhyang University Bucheon Hospital, Soonchunhyang University)
Chung, Moonyoung (Department of Neurosurgery, Soonchunhyang University Bucheon Hospital, Soonchunhyang University)
Publication Information
Journal of Korean Neurosurgical Society / v.65, no.2, 2022 , pp. 276-286 More about this Journal
Abstract
Objective : Spinal cord stimulation (SCS) is an effective treatment for chronic neuropathic pain. However, its clinical efficacy in regard to specific types of pain has not been well studied. The primary objective of this study was to retrospectively analyze the clinical outcomes of paddle-type SCS according to the type of neuropathic pain. Methods : Seventeen patients who underwent paddle-lead SCS at our hospital were examined. Clinical outcomes were evaluated pre- and postoperatively (3 months, 1 year, and last follow-up) using the Neuropathic Pain Symptom Inventory (NPSI). The NPSI categorizes pain as superficial, deep, paroxysmal, evoked, or dysesthesia and assess the duration of the pain (pain time score). Changes in NPSI scores were compared with change in Visual analogue scale (VAS) scores. Results : After SCS, the pain time score improved by 45% (independent t-test, p=0.0002) and the deep pain score improved by 58% (independent t-test, p=0.001). Improvements in the pain time score significantly correlated with improvements in the VAS score (r=0.667, p=0.003, Spearman correlation). Additionally, the morphine milligram equivalent value was markedly lower after vs. before surgery (~49 mg, pared t-test, p=0.002). No preoperative value was associated with clinical outcome. Conclusion : The NPSI is a useful tool for evaluating the therapeutic effects of SCS. Chronic use of a paddle-type spinal cord stimulation improved the deep pain and the pain time scores.
Keywords
Spinal cord stimulation; Chronic pain; Pain management; Pain measurement;
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