Answer to Question 1
ANS: A
Methadone prolongs the QT interval. It does not prolong the P-R interval, cause AV block, or produce an elevated QRS complex.
Answer to Question 2
ANS: A
The nurse should remember that addiction to opioids usually occurs in patients who already have tendencies for addiction, so an assessment of previous experiences with addictive substances would be indicated. Postoperative pain should be treated appropriately with medications that are effective. Nonopioid medications are not sufficient to treat postoperative pain. Patients should be encouraged to use the PCA as needed so that pain can be controlled in a timely fashion. PRN dosing is not as effective as dosing that is continuous, so a basal dose should be given as well as a PRN dose.