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20. A patient diagnosed with bipolar disorder is prescribed daily lithium. Which action is most important to determine if the therapeutic level is maintained?a. Obtain pre-administration blood work.b. Administer medication at regular intervals.c. Ensure periodic laboratory testing is completed.d. Assess the patient for adverse effects.Chapter 4: Pharmacokinetics, Pharmacodynamics, and Drug Interactions21. The nurse administers naloxone [Narcan] to a patient who has received a toxic dose of morphine sulfate. The nurse understands that the naloxone is effective because of which action?22. A patient is taking drug X and receives a new prescription for drug Y, which is listed as an inducing agent. The nurse caring for this patient understands that this patient may require __ doses of drug __.23. The nurse is preparing to administer penicillin G intramuscularly to a child. The child ’s parents ask why the drug cannot be given in an oral liquid form. What is the nurse’s reply?24. Which statement about food and drug interactions is true?a. Foods alter drug absorption and metabolism but not drug action.b. Medications are best absorbed on an empty stomach.c. Patient discomfort is the food and drug interaction of most concern.d. Some foods can inhibit CYP isoenzymes and alter drug metabolism. 25. A nurse is teaching a patient about a drug that induces P-glycoprotein. The nurse will explain that this drug may cause which effect on other drugs?26. A patient claims to get better effects with a tablet of Brand X of a drug than with a tablet of Brand Y of the same drug. Both brands contain the same amount of the active ingredient. What does the nurse know to be most likely?