The client asks the nurse how atorvastatin (Lipitor) will help lower cholesterol. Which response by the nurse is most appropriate?
It interferes with how cholesterol is made
Its action is not understood.
It binds to cholesterol and inhibits its production.
It makes the body excrete cholesterol quicker.
The Correct Answer is A
A. Atorvastatin (Lipitor) is a statin medication that works by inhibiting the enzyme HMG-CoA reductase, which plays a key role in cholesterol synthesis in the liver, thereby lowering cholesterol levels.
B. Atorvastatin's mechanism of action is well understood; it is not accurate to say its action is not understood.
C. Atorvastatin does not bind to cholesterol; instead, it inhibits its production in the liver.
D. Atorvastatin does not directly cause the body to excrete cholesterol but rather reduces its production in the liver.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. One and one-half tablets would exceed the prescribed dose.
B. One-quarter of a tablet would be 12.5 mg, which is less than the prescribed 25 mg.
C. One tablet would provide 50 mg, which is double the prescribed dose for the first week.
D. Half a tablet of a 50 mg tablet would correctly provide the 25 mg dose prescribed for the first week.
Correct Answer is C
Explanation
A. Orange juice does not interact with simvastatin and does not need to be avoided.
B. Coenzyme Q10 (CoQ10) supplements are sometimes taken by patients on statins to help alleviate the side effects like muscle pain, but they do not need to be avoided.
C. Grapefruit juice should be avoided while taking simvastatin because it contains compounds that interfere with the enzymes that metabolize statins, potentially leading to increased drug levels and greater risk of side effects such as muscle damage.
D. Not all fruit juices interact with simvastatin; the specific concern is with grapefruit juice.
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