Abstract
Purpose of Review
Recent research has shown the effectiveness of peripheral nerve stimulators (PNS) in managing chronic pain conditions. Ongoing studies aim to explore its potential application in treating acute postoperative pain states. The purpose of this systematic review is to assess the role of PNS in providing relief for postoperative pain.
Recent Findings
Clinical studies investigating the use of peripheral nerve stimulators (PNS) for analgesia following various surgeries, such as total knee arthroplasty, anterior cruciate ligament repair, ankle arthroplasty, rotator cuff repair, hallux valgus correction, and extremity amputation, have shown promising results. Lead placement locations include the brachial plexus, sciatic, femoral, tibial, genicular, perineal, sural, radial, median, and ulnar nerves. These studies consistently report clinically significant reductions in pain scores, and some even indicate a decrease in opioid consumption following PNS for postoperative pain.
Summary
PNS involves the subcutaneous placement of electrode leads to target peripheral nerve(s) followed by delivery of an electric current via an external pulse generator. While the precise mechanism is not fully understood, the theory posits that PNS modulates electrical stimulation, hindering the signaling of nociceptive pain. PNS presents itself as an alternative to opioid therapy, holding promise to address the opioid epidemic by offering a nonpharmacologic approach for both acute and chronic pain states.
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Data Availability
No datasets were generated or analysed during the current study.
References
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Conceptualization, ADK, TRP, SAS, ARR, MJA, CGN, AAC, SK, KD, SS, CLR. Writing—original draft preparation, ADK, TRP, SAS, ARR, MJA, CGN, AAC, SK, KD, SS, CLR. Writing—review and editing, ADK, TRP, SAS, ARR, MJA, CGN, AAC, SK, KD, SS, CLR. All authors have read and agreed to the published version of the manuscript.
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Key Summary Points
• PNS involves the subcutaneous placement of an electrode near a target nerve using ultrasound guidance. Electric current is delivered via an external pulse generator, or stimulator, to the area surrounding the peripheral nerve. The current provides therapeutic pain relief by interrupting nociceptive pain signals to the brain.
• Most recognized indications for PNS involve treatment of pain conditions not related to surgery. However, the FDA has confirmed the postoperative use of PNS, and current research shows favorable results for PNS in the treatment of acute pain states.
• Standard postoperative analgesic treatments such as opioids, peripheral nerve blocks, epidural injections, radiofrequency ablation, and spinal cord stimulation are known to have potential adverse effects and high patient burden. PNS appears to be an effective alternative approach to postoperative analgesia with efficacy and minimal side effects.
• Though further research is needed, PNS is a promising analgesic technique that has shown positive results in recent clinical studies for chronic pain states as well as managing acute postoperative pain.
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Kaye, A.D., Plaisance, T.R., Smith, S.A. et al. Peripheral Nerve Stimulation in Postoperative Analgesia: A Narrative Review. Curr Pain Headache Rep (2024). https://doi.org/10.1007/s11916-024-01257-z
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DOI: https://doi.org/10.1007/s11916-024-01257-z