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Opioid Rotation From Morphine to Methadone in Treatment of Non-malignant Pain

This study has been completed.
Information provided by (Responsible Party):
Norwegian University of Science and Technology Identifier:
First received: July 24, 2006
Last updated: July 28, 2016
Last verified: July 2016
Patients with non-malignant pain are switched from morphine to methadone with a nine-months' follow-up.

Condition Intervention Phase
Non-malignant Chronic Pain Drug: Methadone Phase 3

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Opioid Switching From Oral Slow Release Morphine to Oral Methadone May Improve Pain Control in Chronic Non-malignant Pain: a Nine-month Follow-up Study.

Resource links provided by NLM:

Further study details as provided by Norwegian University of Science and Technology:

Primary Outcome Measures:
  • pain [ Time Frame: 9 months ]

Enrollment: 12
Study Start Date: January 2004
Study Completion Date: March 2005
Primary Completion Date: March 2005 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: switch from morphine to methadon Drug: Methadone

Detailed Description:
Twelve patients with poor pain control or unacceptable side effects during treatment with morphine were switched to methadone and followed for nine months in this open prospective study. Primary outcomes were patient preference for opioid and pain control while physical, cognitive and role functioning were secondary outcomes. The morphine dose was decreased by 1/3 daily and was replaced with an equianalgesic dose of methadone over a three-day period. During switching and a one-week dose titration period, patients were given additional methadone if required. During dose titration one patient experienced sedation requiring naloxone. Four patients were switched back to morphine due to poor pain control, drowsiness or sweating. Seven patients preferred long-term (>nine months) treatment with methadone and reported reduced pain and improved functioning while cognition was not improved. This study brings novel information on the long-term consequences for pain control, health-related quality of life and cognitive functioning with a switch from morphine to methadone in the treatment of chronic non-malignant pain.

Ages Eligible for Study:   18 Years to 70 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • 18-70 years of age
  • non-malignant chronic pain
  • morphine use

Exclusion Criteria:

  • addiction
  • kidney disorders
  Contacts and Locations
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Please refer to this study by its identifier: NCT00356083

Sponsors and Collaborators
Norwegian University of Science and Technology
Principal Investigator: Petter C. Borchgrevink, PhD MD Norwegian University of Science and Technology
Study Chair: Petter C Borchgrevink, MD PhD Norwegian University of Science and Technology
  More Information

Responsible Party: Norwegian University of Science and Technology Identifier: NCT00356083     History of Changes
Other Study ID Numbers: 188-03REK
Study First Received: July 24, 2006
Last Updated: July 28, 2016

Additional relevant MeSH terms:
Chronic Pain
Neurologic Manifestations
Nervous System Diseases
Signs and Symptoms
Analgesics, Opioid
Central Nervous System Depressants
Physiological Effects of Drugs
Sensory System Agents
Peripheral Nervous System Agents
Antitussive Agents
Respiratory System Agents processed this record on September 21, 2017