NAPLEX practice question 12 of 25

CJ is a 69-year-old male with a history of diabetes, hypertension and hypercholesterolemi a. His fasting lipid profile is TC 530 mg/dL; LDL-C 125…

Full set: 154 questions

Domain Ensure Safe and Effective Pharmacotherapy and Health Outcomes

CJ is a 69-year-old male with a history of diabetes, hypertension and hypercholesterolemi a. His fasting lipid profile is TC 530 mg/dL; LDL-C 125; HDL-C 48 mg/dL; and TG 640 mg/dL. His A1c 8.1, calculate creatinine clearance is 65mls/hr, BP 135/80 mm Hg, HR 70 beats /min. His current medications include metformin 1000mg po bid, lisinopril 20mg daily, sitagliptin 50mg bid and atorvastatin 40mg daily. What is the best pharmacological agent to initiate on CJ?
Answer options
A: Increase atorvastatin to 80mg
B: Niacin 500mg twice daily
C: Fenofibrate 162mg daily Correct answer
D: Gemfibrozil 600mg twice daily
E: Fish oil 500mg twice daily
Correct Answer:
C. Fenofibrate 162mg daily
Explanation

The patient's most critical lab value is the severely elevated triglyceride (TG) level of 640 mg/dL. TGs > 500 mg/dL significantly increase the risk of acute pancreatitis, making TG reduction the primary therapeutic priority. Fibrates are the most effective class of drugs for lowering very high triglycerides. The patient is already on a high-intensity statin. While combining a statin and a fibrate increases the risk of myopathy, fenofibrate has a much lower risk of this interaction compared to gemfibrozil. Therefore, initiating fenofibrate is the most appropriate and safest choice to address the immediate risk of pancreatitis.

Why Incorrect

A. Increasing atorvastatin to 80mg would provide only a modest additional TG-lowering effect and is insufficient to manage the severe hypertriglyceridemia and pancreatitis risk.
B. Niacin is not recommended as it can worsen hyperglycemia, which is a concern in this patient with an A1c of 8.1%, and it lacks proven cardiovascular benefit when added to a statin.
D. Gemfibrozil is contraindicated with statins. It inhibits statin metabolism, markedly increasing the risk of severe myopathy and rhabdomyolysis.
E. The proposed dose of fish oil (1 gram/day) is a nutritional supplement dose, not a therapeutic dose. Prescription doses of 2-4 grams/day are needed for significant TG reduction.

References

1. Grundy

S. M.

Stone

N. J.

Bailey

A. L.

et al. (2019). 2018 AHA/ACC/AACVPR/AAPA/ABC/ACPM/ADA/AGS/APhA/ASPC/NLA/PCNA Guideline on the Management of Blood Cholesterol: A Report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines. Journal of the American College of Cardiology

73(24)

e285–e350. In Section 4.6.2

"Management of Severe Hypertriglyceridemia (Triglycerides ≥500 mg/dL)

" the guideline states

"In patients with severe hypertriglyceridemia

it is reasonable to initiate fibrate therapy... to reduce the risk of pancreatitis." It also explicitly warns

"Gemfibrozil should not be initiated in patients on statin therapy because of an increased risk for myopathy." (DOI: https://doi.org/10.1016/j.jacc.2018.11.003)

2. Berglund

L.

Brunzell

J. D.

Goldberg

A. C.

et al. (2012). Evaluation and treatment of hypertriglyceridemia: an Endocrine Society clinical practice guideline. The Journal of Clinical Endocrinology & Metabolism

97(9)

2969–2989. In Section 2.0

"Treatment of Hypertriglyceridemia

" Recommendation 2.2 states

"For patients with very high TG levels (>500 mg/dl)

we recommend fibrates as the first-line drug treatment to prevent pancreatitis." (DOI: https://doi.org/10.1210/jc.2011-3213)

3. University of California

San Francisco School of Pharmacy. (n.d.). Pharmacotherapy of Dyslipidemia. Course materials for Pharmacy 116. The courseware discusses the management of hyperlipidemia

emphasizing that for severe hypertriglyceridemia (TG > 500 mg/dL)

the primary goal is pancreatitis prevention

for which fibrates are the drug of choice. It also highlights the significant drug-drug interaction between gemfibrozil and statins

making fenofibrate the preferred agent for combination therapy.

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