Kaye, Alan David Perioperative dilemma: challenges of the management of a patient on mega doses of morphine and methadone. [electronic resource] - Journal of opioid management - 69-72 p. digital Publication Type: Case Reports; Journal Article ISSN: 1551-7489 Standard No.: 10.5055/jom.2014.0194 doi Subjects--Topical Terms: AgedFemaleHumansMethadone--administration & dosageMorphine--administration & dosageN-Methylaspartate--antagonists & inhibitorsNeoplasms--physiopathologyPain, Intractable--drug therapyPain, Postoperative--drug therapy