A 42-year-old man with opioid use disorder is admitted to the hospital for acute medical illness. He is unable to attend his usual methadone clinic. Which of the following is the preferred alternative for short-term maintenance during his hospital stay?

Explanation

## Short-Term Maintenance in Hospitalized Opioid-Dependent Patients **Key Point:** Buprenorphine is the preferred alternative for short-term maintenance therapy in hospitalized opioid-dependent patients who cannot access their regular methadone clinic. ### Why Buprenorphine in Hospital Settings? 1. **Partial agonist properties:** Buprenorphine has a ceiling effect on respiratory depression, making it safer in acute medical illness 2. **Flexible dosing:** Can be administered subcutaneously, intramuscularly, or sublingually (no need for daily clinic visits) 3. **Lower overdose risk:** The partial agonist profile reduces the risk of fatal overdose compared to full agonists 4. **Prevents withdrawal:** Maintains opioid dependence without precipitating withdrawal symptoms 5. **Drug interactions:** Fewer interactions with acute medications compared to methadone ### Comparison: Maintenance Options in Acute Settings | Agent | Route | Advantage | Disadvantage | |-------|-------|-----------|-------------| | **Buprenorphine** | SL, IM, SC | Safer, flexible dosing, partial agonist | May be less effective in severe dependence | | **Methadone** | PO | Gold standard | Requires daily clinic access; QT risk | | **Morphine** | IV, IM | Treats pain + withdrawal | Full agonist; overdose risk; not maintenance | | **Codeine** | PO | Weak opioid | Inadequate for maintenance; poor bioavailability | | **Pentazocine** | IM | Mixed agonist-antagonist | Precipitates withdrawal; dysphoria | **High-Yield:** In hospital settings, buprenorphine is increasingly preferred over methadone because: - It does not require daily supervised clinic attendance - It has a lower potential for fatal overdose (ceiling effect on respiratory depression). - It can be dosed flexibly based on clinical need. **Clinical Pearl:** If the patient's pain needs to be managed alongside opioid maintenance, buprenorphine is doubly advantageous because it provides both analgesia and maintenance coverage. However, if the patient requires high-dose opioid analgesia (e.g., post-surgical pain), additional opioids may be needed on top of buprenorphine. **Mnemonic:** **BUPRE** = **B**etter for **U**rgent **P**atients **RE**quiring flexibility. **Warning:** Morphine and other full agonists should NOT be used for maintenance—they treat acute pain but do not provide stable maintenance and carry higher overdose risk. Pentazocine is contraindicated because it is a mixed agonist-antagonist and will precipitate withdrawal.