Evaluation of a pharmacist-led interprofessional chronic pain clinic in Canada.

Background: Chronic noncancer pain (CNCP) is a common condition that affects individuals at a biopsychosocial level and can significantly impair function and quality of life. Referral to an interprofessional CNCP program is recommended for most patients; however, these clinics are limited in number and capacity. Expanding access by testing new service delivery models would be of value. The purpose of this study was to measure the impact of a new pharmacist-led, interprofessional model of care developed at the University of Saskatchewan Chronic Pain Clinic.

Methods: A retrospective chart audit was conducted using data that included adult patients referred for CNCP management between May 2020 and December 2021. Medication use, overall health status (using the Clinical Global Impression of Change-Improvement [CGI-I] scale) and patient readiness to change (using the Transtheoretical Model) were measured 6 months after the initial appointment.

Results: The study included 138 patients. Of the 80 patients taking an opioid, 22.5% were switched to buprenorphine/naloxone and the remainder had their mean morphine-equivalent dose reduced by a mean of 41.7 mg/d. Overall patient health status was minimally improved and many patients moved into the Action stage of change.

Discussion: Changes in opioid use demonstrate a clinically important shift toward safer medication regimens that are less likely to lead to toxicity and unintended overdose. CGI-I data suggest that these patients, whose health status is typically very difficult to change, did not deteriorate but slightly improved after attending the clinic.

Conclusion: The unique pharmacist-led, interprofessional model of care used by the University of Saskatchewan Chronic Pain Clinic may offer a viable alternative to traditional physician-led models.