AHPA 5306 - Pharm Exam 1 Study Guide.

AHPA 5306 - Pharm Exam 1 Study Guide/AHPA 5306 - Pharm Exam 1 Study Guide. Chapter 10 Analgesic ceiling effect: the drug reaches a maximum analgesic effect; analgesia does not improve even with higher dosages. Useful for pt who have not been previously exposed to opioid and can be used for nonescalating moderate to severe pain. Equianalgesia: the ability to provide equivalent pain relief by calculating dosages of different drugs and/or routes of administration that provide comparable analgesia. Fentanyl patch: used only by pts who are considered opioid tolerant. Patch applied externally for 72 hours, a new patch may be applied after 12-17hrs for medication reduction of 50%. Contraindications for opioid analgesics include drug allergy and asthma. Methadone hydrochloride: opioid of choice for the detoxification treatment of addicts in methadone maintenance programs. Morphine sulfate: indicated for severe pain and has a high abuse potential. Accumulation of drug is more likely to occur in pts with renal impairment.