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Challenging equipotency calculation for hydromorphone after long-term intravenous application
Benjamin Luchting1, Banafscheh Rachinger-Adam1, Nikolai Hulde1
1Department of Anesthesiology and Pain Medicine, Ludwig-Maximilians University Munich, 81377 Munich, Germany.
Annals of Palliative Medicine
|June 10, 2017
Summary
Opioid rotation is crucial for advanced cancer pain management. A patient with urothelial cell carcinoma achieved significant pain relief with a lower dose of piritramide after hydromorphone, avoiding adverse effects.
Area of Science:
- Oncology
- Pain Medicine
- Pharmacology
Background:
- Advanced cancer pain often requires strong opioids (WHO III) for management.
- Opioid rotation is sometimes necessary but conversion tables can be unreliable, leading to inadequate pain control or adverse events.
Observation:
- A patient with urothelial cell carcinoma experienced severe pain (NRS 10/10) despite maximal intravenous hydromorphone.
- A single, low dose of piritramide provided significant pain relief.
Findings:
- A stepwise opioid rotation from hydromorphone to piritramide was successfully completed within a week without withdrawal symptoms.
- The patient was discharged with near-complete pain relief using piritramide doses significantly lower than equianalgesic recommendations.
Implications:
- Individualized opioid titration and rotation are essential, even after long-term high-potency opioid use.
- This case highlights the potential for effective pain management with different opioid titration strategies, challenging standard equianalgesic dosing.
- Understanding individual opioid response mechanisms is critical for optimizing cancer pain therapy.
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