Primary care patient characteristics associated with completion of 6-month buprenorphine treatment.

BACKGROUND: Opioid addiction is prevalent in the United States. Detoxification followed by behavioral counseling (abstinence-only approach) leads to relapse to opioids in most patients. An alternative approach is substitution therapy with the partial opioid receptor agonist buprenorphine, which is used for opioid maintenance in the primary care setting. This study investigated the patient characteristics associated with completion of 6-month buprenorphine/naloxone treatment in an ambulatory primary care office. METHODS: A retrospective chart review of 356 patients who received buprenorphine for treatment of opioid addiction was conducted. Patient characteristics were compared among completers and non-completers of 6-month buprenorphine treatment. RESULTS: Of the 356 patients, 127 (35.7%) completed 6-month buprenorphine treatment. Completion of treatment was associated with counseling attendance and having had a past injury. CONCLUSIONS: Future research needs to investigate the factors associated with counseling that influenced this improved outcome. Patients with a past injury might suffer from chronic pain, suggesting that buprenorphine might produce analgesia in addition to improving addiction outcome in these patients, rendering them more likely to complete 6-month buprenorphine treatment. Further research is required to test this hypothesis. Combination of behavioral and medical treatment needs to be investigated for primary care patients with opioid addiction and chronic pain.

Pharmacologic therapy for acute pain.

The approach to patients with acute pain begins by identifying the underlying cause and a disease-specific treatment. The first-line pharmacologic agent for the symptomatic treatment of mild to moderate pain is acetaminophen or a nonsteroidal anti-inflammatory drug (NSAID). The choice between these two medications depends on the type of pain and patient risk factors for NSAID-related adverse effects (e.g., gastrointestinal, renovascular, or cardiovascular effects). Different NSAIDs have similar analgesic effects. However, cyclooxygenase-2 selective NSAIDs (e.g., celecoxib) must be used with caution in patients with cardiovascular risk factors and are more expensive than nonselective NSAIDs. If these first-line agents are not sufficient for mild to moderate pain, medications that target separate pathways simultaneously, such as an acetaminophen/opioid combination, are reasonable choices. Severe acute pain is typically treated with potent opioids. At each step, adjuvant medications directed at the underlying condition can be used. Newer medications with dual actions (e.g., tapentadol) are also an option. There is little evidence that one opioid is superior for pain control, but there are some pharmacologic differences among opioids. Because of the growing misuse and diversion of controlled substances, caution should be used when prescribing opioids, even for short-term treatment. Patients should be advised to properly dispose of unused medications.

A preliminary study comparing methadone and buprenorphine in patients with chronic pain and coexistent opioid addiction.

Patients with opioid addiction who receive prescription opioids for treatment of nonmalignant chronic pain present a therapeutic challenge. Fifty-four participants with chronic pain and opioid addiction were randomized to receive methadone or buprenorphine/naloxone. At the 6-month follow-up examination, 26 (48.1%) participants who remained in the study noted a 12.75% reduction in pain (P = 0.043), and no participants in the methadone group compared to 5 in the buprenorphine group reported illicit opioid use (P = 0.039). Other differences between the two conditions were not found. Long-term, low-dose methadone or buprenorphine/naloxone treatment produced analgesia in participants with chronic pain and opioid addiction.