Opioid dose and neuropathic pain before and after electroconvulsive therapy

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  • IWATA Ken
    Addictive Substance Project, Tokyo Metropolitan Institute of Medical Science Department of Neuro-psychiatry, Tokyo Metropolitan Hiroo General Hospital
  • KOBAYASHI Yukino
    Department of Anesthesiology and Pain Clinic, Ebara Hospital
  • MERA Hitoshi
    Department of Anesthesiology and Pain Clinic, Ebara Hospital
  • DOI Nagafumi
    Addictive Substance Project, Tokyo Metropolitan Institute of Medical Science Ibaraki Prefectural Medical Center of Psychiatry
  • SUWA Hiroshi
    Department of Psychiatry, Ebara Hospital
  • IKEDA Kazutaka
    Addictive Substance Project, Tokyo Metropolitan Institute of Medical Science

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  • Clinical Report : Opioid dose and neuropathic pain before and after electroconvulsive therapy

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Abstract

Electroconvulsive therapy (ECT) may have analgesic effects on neuropathic pain, and the amounts of patient-requested opioids for pain reportedly decrease after ECT. However, no reports have examined the relationship between the analgesic effects of ECT and opioid dosages administered before and after ECT. We reviewed the medical records of 11 patients who underwent ECT while simultaneously using supplemental opioids for pain relief at our institution between March 2003 and March 2012. One case was excluded from analysis due to missing data. Eight of the remaining 10 patients showed decreased usage of opioids during ECT. Furthermore, opioid dosages for 4 of those 8 patients decreased without worsening of neuropathic pain. These results suggest that ECT may alleviate neuropathic pain and allow immediate decreases in opioid dosages for some patients with neuropathic pain.

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