Multimodal analgesia
Formal Definition
A pain management strategy using multiple analgesic agents with different mechanisms of action to achieve additive or synergistic pain relief while minimizing opioid requirements and their associated adverse effects; the cornerstone of modern enhanced recovery after surgery (ERAS) protocols and opioid-sparing perioperative care.
How It's Used on the Ward
"Multi-modal pain control" or "opioid-sparing approach" — giving acetaminophen, NSAIDs, and nerve blocks alongside (or instead of) opioids.
Example
""Post-op total hip replacement using ERAS protocol: scheduled acetaminophen 1g q6h, celecoxib 200mg q12h, gabapentin 300mg q8h for the first 48 hours, plus regional nerve block placed intraoperatively. PRN oxycodone for breakthrough pain. Target is <30mg oral morphine equivalents per day.""
Clinical Context
Multimodal foundation: acetaminophen (safe in most patients, avoid >4g/day in liver disease), NSAIDs (avoid in renal dysfunction, GI history, cardiovascular risk), gabapentinoids (effective for neuropathic and post-op pain, avoid in elderly or renal impairment — sedation risk). Regional anesthesia: nerve blocks (TAP block, femoral nerve block, epidural) provide excellent segment-specific analgesia. ERAS protocols: pre-operative (patient education, carbohydrate loading), intraoperative (multimodal analgesia, avoidance of opioids when possible), post-operative (early mobilization, early PO). Chronic pain after surgery (CPSP) risk reduced by adequate acute pain control. Ketamine infusions: sub-anesthetic doses reduce opioid consumption in opioid-tolerant patients.
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