Drug Interaction Report

MONITOR: Opioids may decrease the minimum alveolar concentration required for inhalation anesthetics. When these agents are used concomitantly, less inhalation anesthetic may be required. In addition, inhalation anesthetics may cause respiratory depression which may be increased by opioid premedication or other agents causing respiratory depression.

MANAGEMENT: In general, anesthesia should be titrated to clinical effect by those experienced in anesthesia technique and in the care of patients receiving opioids. Patients should be monitored closely for respiratory depression. Supportive therapy should be provided if needed.

GENERALLY AVOID: Alcohol may have additive CNS- and/or respiratory-depressant effects with propoxyphene. Misuse of propoxyphene, either alone or in combination with other CNS depressants, has been a major cause of drug-related deaths, particularly in patients with a history of emotional disturbances, suicidal ideation, or alcohol and drug abuse.

MANAGEMENT: The use of alcohol during propoxyphene therapy should be avoided. Patients should be warned not to exceed the recommended dosage of propoxyphene and to avoid activities requiring mental alertness until they know how these agents affect them.