Chronic noncancer pain and the long term utility of opioids.
OBJECTIVE
To report on a long term experience in treating patients with chronic noncancer pain (CNCP).


METHODS
One hundred two patients with CNCP were seen every three months and followed for one year or more (median eight years, range one to 22). Demographic data, diagnostic categories and response to therapies were recorded. The utility and safety of opioid therapy, adverse events, impact on disability and issues related to previous psychiatric or chemical dependency history were documented.


RESULTS
Most patients reported a variety of neuropathic pain problems and most required chronic opioid therapy after the failure of other treatments. Although 44% reported being satisfied with pain relief despite adverse events, it is noteworthy that the remaining patients chose to continue therapy for the modest benefit of pain relief despite adverse events. Moreover, 54% were less disabled on opioid therapy.


CONCLUSIONS
This is a large sample of CNCP patients, most taking opioids over a long period of time. CNCP can be treated by opioids safely and with a modest effect, with improvement in functioning in some patients who are refractory to other measures. If care is taken, opioids may even be used effectively for patients with a history of chemical dependency.
Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.
C P N
CP
Watson
J H
JH
Watt-Watson
M L
ML
Chipman
D000701:Analgesics, Opioid / Q000008:administration & dosage*; D002908:Chronic Disease; D005260:Female; D006801:Humans; D008134:Long-Term Care / Q000379:methods / Q000523:psychology / Q000706:statistics & numerical data; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D010146:Pain / Q000188:drug therapy* / Q000523:psychology
D000701:Analgesics, Opioid