A 76-year-old woman with chronic noncancer pain and an intrathecal hydromorphone–bupivacaine pump was admitted for acute exacerbation of heart failure. Her pump was unable to be replaced due to medical comorbidities. She was unable to tolerate oral opioids due to ventilatory depression. Tapering hydromorphone resulted in opioid withdrawal due to physiological dependence. Microdosing of sublingual buprenorphine–naloxone was initiated while decreasing intrathecal hydromorphone. This successfully weaned the patient off intrathecal hydromorphone with adequate pain relief and prevented both opioid withdrawal and ventilatory depression. To our knowledge, microdosing buprenorphine-naloxone to assist with discontinuing intrathecal opioids has not been previously reported in the literature.
Patients with injection drug use-associated infective endocarditis and opioid use disorder often receive treatment for the infection that fails to address its underlying cause. People who inject drugs (PWID) and develop serious infections also face disparities in antibiotic management, particularly with regards to use of outpatient parenteral antimicrobial therapy (OPAT). We highlight literature on OPAT in PWID challenging the notion that PWID cannot be managed with OPAT. Given that OPAT use amongst PWID and non-PWID yields similar outcomes, we argue that a bias against OPAT use in PWID is unwarranted and may reflect stigma rather than data. We further note the proven value of comprehensive OUD treatment on endocarditis treatment outcomes, which also addresses the potential safety concerns of OPAT in PWID, and propose a treatment model in which Addiction and Infectious Disease specialists collaborate to integrate opioid use disorder treatment into injection drug use-associated infective endocarditis care.
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