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First-line methadone for cancer pain: titration time analysis
Guillermo Mammana1, Mariela Bertolino1, Eduardo Bruera2
1Unidad de Cuidados Paliativos - Fundación FEMEBA, Hospital de Agudos Dr. E. Tornú, Buenos Aires, Argentina.
Low-dose methadone effectively manages cancer pain in palliative care. This study shows rapid pain reduction with minimal rescue doses and no significant side effects, making it a viable first-line treatment.
Area of Science:
- Palliative Care
- Pain Management
- Pharmacology
Background:
- Methadone is a cost-effective opioid for palliative care pain.
- Its long half-life complicates titration.
- Evidence for titration methods is limited.
Purpose of the Study:
- To evaluate low-dose methadone titration in opioid-naïve patients.
- To assess methadone use for breakthrough cancer pain.
Main Methods:
- Prospective study of 62 opioid-naïve cancer patients.
- Initiated with 2.5-5 mg/day methadone, with daily dose adjustments.
- Rescue methadone (2.5 mg) allowed for breakthrough pain.
Main Results:
- Pain intensity significantly decreased within 7 days (p < 0.0001).
- 81% achieved pain control, 66% within 48 hours.
- Median stabilization dose was 5 mg/day with minimal rescue doses.
Conclusions:
- Low-dose methadone with rescue doses provides rapid pain relief.
- Effective titration achieved with minimal need for breakthrough medication.
- No evidence of methadone accumulation or sedation observed.
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