Nokea
Elimination after 4 half lives in first order kinetics is
- A. 84%
- B. 93%
- C. 80.50%
- D. 4.75%
Correct Answer: B
Rationale: After 4 half-lives, 93.75% (1 - 1/16) of the drug is eliminated in first-order kinetics.
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A nurse in an acute mental health facility is caring for a client who is experiencing withdrawal from Opioid use and has a new prescription for Clonidine. Which of the following actions should the nurse identify as the priority?
- A. Administer the clonidine on the prescribed schedule.
- B. Provide ice chips at the client's bedside.
- C. Educate the client on the effects of clonidine.
- D. Obtain baseline vital signs
Correct Answer: D
Rationale: Baseline vital signs are the priority to assess withdrawal severity and monitor clonidine's effects.
Which of the following is an insulin effect in the liver:
- A. Inhibition of glycogenolisis
- B. Inhibition of glycolysis
- C. Decrease of glycogenesis
- D. Decreases of pyruvatkinase, phosphofructokinase and glucokinase activity
Correct Answer: A
Rationale: Insulin inhibits glycogenolysis in the liver, promoting glucose storage as glycogen rather than its breakdown.
The U.S. Food and Drug Administration approval is required for:
- A. Medical devices, including artificial joints
- B. Over-the-counter vitamins
- C. Herbal products, such as St John's wort
- D. Dietary supplements, such as Ensure
Correct Answer: A
Rationale: FDA approval is required for medical devices like artificial joints , but not OTC vitamins, herbal products, or supplements (B-D), which have lighter oversight.
A staff educator is reviewing medication dosages and factors that influence medication metabolism with a group of nurses at an in-service presentation. Which of the following factors should the educator include as a reason to administer lower medication dosages?
- A. Increased renal secretion
- B. Increased medication-metabolizing enzymes
- C. Liver failure
- D. Peripheral vascular disease
Correct Answer: C
Rationale: Liver failure impairs metabolism, and concurrent use of medications metabolized by the same pathway can increase drug levels, both necessitating lower doses.
Food in the gastrointestinal tract affects drug absorption by:
- A. Altering the pH of the colon, which decreases absorption
- B. Competing with the drug for plasma proteins
- C. Altering gastric emptying time
- D. Altering the pH of urine
Correct Answer: C
Rationale: Food alters gastric emptying time, which can delay or enhance drug absorption depending on the drug's properties.