Publications by authors named "Michael S Leong"

Article Synopsis
  • The International Neuromodulation Society organized a diverse group of experts to create guidelines for using intrathecal drug delivery in chronic pain management based on two decades of research.
  • Authors were selected for their expertise and conducted thorough literature reviews to ensure the recommendations were evidence-based.
  • The resulting guidelines aim to improve the safety and effectiveness of intrathecal drug delivery, with plans for future updates as new research becomes available.
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Introduction: Neuromodulation represents one of the more advanced tools in the armamentarium of pain physicians. To optimize neuromodulation patient selection and management, an institutional interdisciplinary neuromodulation committee was created at each of two academic medical centers (University of California Davis [UCD] and Stanford University). The committee aims to collaboratively optimize neuromodulation candidates, to assess and minimize medical and psychologic risks, and to select the best device given a patient's pain condition.

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Introduction: Psychological evaluation is required by insurance companies in the United States prior to proceeding with a spinal cord stimulation or a dorsal root ganglion stimulation trial. Since January 2017, we implemented a Multidisciplinary Team Conference for Neuromodulation in our center to facilitate the collaboration between pain physicians and psychologists and to optimize screening of neuromodulation candidates. This study aims to report the impact of this team conference on improvement of neuromodulation outcome in our center.

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The need to be competent in neuromodulation is and should be a prerequisite prior to completing a fellowship in interventional pain medicine. Unfortunately, many programs lack acceptable candidates for these advanced therapies, and fellows may not receive adequate exposure to neuromodulation procedures. The American Society of Pain and Neuroscience (ASPN) desires to create a consensus of experts to set a minimum standard of competence for neurostimulation procedures, including spinal cord stimulation (SCS), dorsal root ganglion stimulation (DRG-S), and peripheral nerve stimulation (PNS).

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Aim: Novel minimally invasive short-term and long-term peripheral nerve stimulation (PNS) systems have revolutionized targeted treatment of chronic neuropathic pain. We present an international survey of PNS-implanting pain physicians to assess what factors they consider when offering permanent PNS.

Methods: This cross-sectional study consisted of a survey (Qualtrics) that was distributed to PNS-implanting physicians in a device supplier's entire email database on November 13, 2020, with 3 weeks of response time.

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Introduction: The International Neuromodulation Society convened a multispecialty group of physicians based on expertise with international representation to establish evidence-based guidance on the use of neurostimulation in the cervical region to improve outcomes. This Neurostimulation Appropriateness Consensus Committee (NACC) project intends to provide evidence-based guidance for an often-overlooked area of neurostimulation practice.

Materials And Methods: Authors were chosen based upon their clinical expertise, familiarity with the peer-reviewed literature, research productivity, and contributions to the neuromodulation literature.

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Objectives: High-frequency and burst stimulation are newer waveforms that have demonstrated promise compared to traditional tonic spinal cord stimulation (SCS), but more studies are needed to compare their effectiveness. We report the study methods for an ongoing, single center, pragmatic randomized clinical trial to compare the effectiveness of high-frequency and burst SCS in patients with chronic back and/or leg pain.

Materials And Methods: Participants who are candidates for spinal cord stimulation are enrolled and screened.

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Ziconotide is a nonopioid analgesic currently indicated as monotherapy, but frequently used in combination with opioids, for the management of severe chronic pain in patients for whom intrathecal (IT) therapy is warranted and who are intolerant of, or whose pain is, refractory to other treatments. There is a paucity of information regarding ziconotide use in patients with complex regional pain syndrome (CRPS). Seven cases in which IT ziconotide was used in patients with CRPS were analyzed.

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Objective: To determine the analgesic effect and tolerability of a novel needle-free powder lidocaine delivery system in children undergoing venipuncture.

Study Design: In this double-blind, placebo-controlled, single-center trial, 306 children age 3 to 18 years were randomized to receive a needle-free powder lidocaine delivery system or matching sham placebo at the back of the hand 2 to 3 minutes before venipuncture. Venipuncture pain was self-reported using the Wong-Baker FACES scale (in 3- to 12-year-olds) and a 100-mm visual analog scale (in 8- to 18-year-olds).

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Background: Previous open-label studies have demonstrated that botulinum toxin type B (BTX-B, Myobloc, Solstice Neurosciences) in doses of up to 3,000 U is safe and effective in the treatment of glabellar wrinkles.

Objective: This double-blind, randomized, placebo-controlled, sequential-dose-escalation study evaluated the safety and tolerability of seven BTX-B doses ranging from 250 to 3,000 U in the treatment of subjects with hyperfunctional glabellar lines.

Methods: Participants received a single intramuscular treatment of either BTX-B or placebo at five facial sites with a 12-week follow-up period.

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Safety and efficacy data from a study of slow intrathecal (IT) ziconotide titration for the management of severe chronic pain are presented. Patients randomized to ziconotide (n = 112) or placebo (n = 108) started IT infusion at 0.1 microg/hour (2.

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