Beyond Pain Control: The Expanding Perioperative Role of Spinal Cord Stimulation

Abstract

Chronic pain is a major global health challenge affecting nearly one-third of the adult population and significantly impairing quality of life, psychological well-being, and functional independence. Conventional pain management strategies—including pharmacological therapy, physical rehabilitation, and surgical interventions—often provide inadequate relief for patients suffering from refractory neuropathic pain syndromes. Over the past two decades, spinal cord stimulation (SCS) has emerged as a promising neuromodulation therapy for patients with chronic pain conditions such as failed back surgery syndrome, complex regional pain syndrome, and peripheral neuropathic pain. SCS involves the delivery of controlled electrical impulses to the dorsal columns of the spinal cord through epidurally implanted electrodes connected to an implantable pulse generator. These electrical impulses modulate nociceptive signaling pathways and reduce pain perception by altering neural transmission within the central nervous system.

Although the effectiveness of SCS in chronic pain management has been extensively documented, its implications for perioperative care remain under-recognized in anesthesiology practice. Patients with implanted SCS devices may present for unrelated surgical procedures, and anesthesiologists must consider potential interactions between neuromodulation devices and intraoperative equipment such as electrocautery, magnetic resonance imaging, and defibrillation systems. Additionally, perioperative pain management in these patients is often complex due to long-standing opioid exposure, altered pain pathways, and the presence of implanted neuromodulation devices.

Recent clinical studies demonstrate that SCS can significantly reduce pain intensity, improve functional outcomes, and decrease reliance on opioid medications in selected patient populations (1)(2). Advances in neuromodulation technology—including high-frequency stimulation, burst stimulation, and closed-loop feedback systems—have further improved the therapeutic efficacy of SCS and expanded its clinical applications (3). These innovations have led to increased adoption of neuromodulation therapy worldwide, resulting in a growing population of patients presenting for surgery with implanted stimulators.

The perioperative management of patients with SCS devices requires a multidisciplinary approach involving anesthesiologists, surgeons, and pain specialists. Preoperative evaluation should include identification of device type, assessment of device functionality, and coordination with the patient’s pain management team. Intraoperative management must focus on minimizing electromagnetic interference and preventing device malfunction. Postoperative care should emphasize multimodal analgesia strategies to maintain effective pain control while minimizing opioid consumption.

This review explores the perioperative role of spinal cord stimulation in chronic pain patients and highlights important considerations for anesthesiologists involved in perioperative care. By integrating neuromodulation therapies into comprehensive pain management strategies, anesthesiologists can play a critical role in improving perioperative outcomes for patients living with chronic pain. Further research is needed to establish standardized guidelines for perioperative management of neuromodulation devices and to evaluate the impact of SCS therapy on surgical recovery and long-term pain outcomes.