• Alice Seol, John Chan, Brittni Micham, Ying Ye, Edward R Mariano, T Kyle Harrison, and Oluwatobi O Hunter.
• Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, California, USA.
• Reg Anesth Pain Med. 2023 Aug 1; 48 (8): 425427425-427.

BackgroundMedications for opioid use disorder (MOUD) are a life-saving intervention; thus, it is important to address barriers to successful initiation. Spasticity affects many patients with spinal cord injury and can be painful and physically debilitating. Chronic painful conditions can lead to the illicit use of non-prescribed opioids, but fear of pain is a barrier to the initiation of MOUD. In this case report, we describe the novel use of botulinum toxin A injections to treat abdominal spasticity and facilitate Acute Pain Service-led buprenorphine/naloxone initiation in a patient with opioid use disorder and severe abdominal spasticity due to spinal cord injury.Case PresentationA patient with C4 incomplete tetraplegia and opioid use disorder complicated by abdominal spasticity refractory to oral antispasmodics and self-treating with intravenous heroin was referred to the Acute Pain Service for inpatient buprenorphine/naloxone initiation. The patient began to fail initiation of buprenorphine/naloxone secondary to increased pain from abdominal spasms. The patient was offered ultrasound-guided abdominal muscle chemodenervation with botulinum toxin A, which resulted in the resolution of abdominal spasticity and facilitated successful buprenorphine/naloxone initiation. At 6 months post-initiation, the patient remained abstinent from non-prescribed opioids and compliant with buprenorphine/naloxone 8 mg/2 mg three times a day.ConclusionsThis case report demonstrates that inpatient buprenorphine/naloxone initiation by an Acute Pain Service can improve the success of treatment by addressing barriers to initiation. Acute Pain Service clinicians possess unique skills and knowledge, including ultrasound-guided interventions, that enable them to provide innovative and personalized approaches to care in the complex opioid use disorder population.© American Society of Regional Anesthesia & Pain Medicine 2023. No commercial re-use. See rights and permissions. Published by BMJ.

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