Switching from morphine to methadone to improve analgesia and tolerability in cancer patients: A prospective study

Alessandra Casuccio, Vittorio Gebbia, Fabio Fulfaro, Vittorio Gebbia, Sebastiano Mercadante, Liliana Groff, Fabio Fulfaro, Alessandra Casuccio, Boffi, Patrizia Villari, Carla Ripamonti

Risultato della ricerca: Articlepeer review

202 Citazioni (Scopus)

Abstract

Purpose: To evaluate the clinical benefits of switching from morphine to oral methadone in patients who experience poor analgesia or adverse effects from morphine. Patients and Methods: Fifty-two consecutive cancer patients receiving oral morphine but with uncontrolled pain and/or moderate to severe opioid adverse effects were switched to oral methadone administered every 8 hours using different dose ratios. Intensity of pain and adverse effects were assessed daily, and the symptom distress score (DS) was calculated before and after switching. Results: Data were analyzed for 50 patients. Switching was considered effective in 80% of the patients; results were achieved in an average of 3.65 days. In the 10 patients who switched to methadone because of uncontrolled pain, a significant reduction in pain intensity (P < .005) and an average of a 33% increase in methadone doses necessary (P < .01) were found after an average of 3.5 days. DS significantly decreased from an average of 8.4 to 4.5 (P < .0005). In the 32 patients switching because of uncontrolled pain and morphine-related adverse effects, significant improvement was found in pain intensity (P < .0005), nausea and vomiting (P < .03), constipation (P < .001), and drowsiness (P < .01), but a significant increase in the methadone dose of an average of 20% (P < .004) was required. Conclusion: In most patients with cancer pain referred for poor pain control and/or adverse effects, switching to oral methadone is a valid therapeutic option. In the clinical setting of poor pain control, higher doses of methadone are necessary with respect to the equianalgesic calculated dose ratios previously published. © 2001 by American Society of Clinical Oncology.
Lingua originaleEnglish
pagine (da-a)2898-2904
Numero di pagine7
RivistaJournal of Clinical Oncology
Volume19
Stato di pubblicazionePublished - 2001

All Science Journal Classification (ASJC) codes

  • ???subjectarea.asjc.2700.2730???
  • ???subjectarea.asjc.1300.1306???

Fingerprint

Entra nei temi di ricerca di 'Switching from morphine to methadone to improve analgesia and tolerability in cancer patients: A prospective study'. Insieme formano una fingerprint unica.

Cita questo