Nokea
A 50-year-old woman has just been diagnosed with type 2 diabetes and given a prescription for metformin. Which of the following statements is characteristic of this medication?
- A. Metformin is inappropriate for initial management of type 2 diabetes
- B. Metformin decreases hepatic glucose production
- C. Metformin undergoes significant metabolism via the cytochrome P450 system
- D. Weight gain is a common adverse effect
Correct Answer: B
Rationale: Metformin reduces hepatic glucose production, a key mechanism in managing type 2 diabetes, and is often a first-line treatment.
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Azathioprine has significant adverse drug effects, including:
- A. Hypertension
- B. Hirsutism
- C. Risk of cancer
- D. Gingival hyperplasia
Correct Answer: C
Rationale: Azathioprine increases cancer risk (e.g., lymphoma) via immunosuppression; other effects (A, B, D) are less prominent.
Which of the following anti inflammatory drugs is ineffective in gout?
- A. Piroxicam
- B. Tolmetin
- C. Aspirin
- D. Celecoxib
Correct Answer: C
Rationale: Aspirin increases uric acid levels, worsening gout.
The treatment of hyperlipidemia with gemfibrozil plus lovastatin is associated with a high risk of:
- A. Constipation
- B. Myopathy
- C. Hepatitis
- D. Thrombocytopenia
Correct Answer: B
Rationale: Combining gemfibrozil and statins increases the risk of myopathy due to elevated statin levels.
A patient needs to take 1 g PO of cefadroxil. The drug comes in 500-mg tablets. How many tablets should the patient take?
- A. 0.5 tablet
- B. 1 tablet
- C. 2 tablets
- D. 3 tablets
Correct Answer: C
Rationale: Convert 1 g to mg by multiplying 1 g times 1000 mg. There are 500 mg in each tablet. Dividing the 1000-mg prescribed dosage by the 500-mg available dosage, the answer is 2 tablets.
Which statement best describes drug efficacy/toxicity in pediatric patients?
- A. Drug requirements for infants have been extensively studied.
- B. Drug dosage is altered by age and weight in children.
- C. Children always need smaller doses of medication than adults.
- D. Infants and children are not at risk for drug toxicity if the dosage is correct
Correct Answer: B
Rationale: Pediatric dosing adjusts for age and weight due to varying metabolism and body composition.