Nokea
A 24-year-old female is prescribed erythromycin for gastroparesis. It is prescribed four times daily due to its short half-life. What is the rationale for such a frequent dosing?
- A. Achieve the steady-state plasma concentration of the drug
- B. Aid more complete distribution of the drug
- C. Avoid the toxicity of the drug because of its low therapeutic index
- D. Ensure that the drug concentration remains constant over time
Correct Answer: C
Rationale: Frequent dosing is required due to erythromycin's short half-life and low therapeutic index, which means a narrow margin between effective and toxic doses, necessitating careful maintenance to avoid toxicity.
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Phase IV clinical trials in the United States are also known as:
- A. Human bioavailability trials
- B. Post marketing research
- C. Human safety and efficacy studies
- D. The last stage of animal trials before the human trials begin
Correct Answer: B
Rationale: Phase IV is post-marketing research , monitoring drugs after approval, unlike earlier phases or animal studies.
B-Blockers are contra indicated in
- A. Hypertension
- B. Congestive cardiac failure
- C. Anxiety states
- D. Hyperthyroidis m
Correct Answer: B
Rationale: Beta-blockers worsen congestive heart failure.
A patient is diagnosed with histoplasmosis and will begin taking ketoconazole. What information will the nurse include when teaching this patient about this medication?
- A. Take the medicine twice daily
- B. Take the medication with food
- C. You may consume small amounts of alcohol
- D. You will not need lab tests while taking this drug
Correct Answer: B
Rationale: Ketoconazole absorption improves with food; it's once daily, and alcohol or no labs are incorrect. Ketoconazole should be taken with food.
After administering a medication, for what would the nurse assess the patient?
- A. Drug effects
- B. Allergies
- C. Pregnancy
- D. Preexisting conditions
Correct Answer: A
Rationale: After the medication is administered, the nurse assesses the patient for drug effects, both therapeutic and adverse. The nurse would assess the patient for allergies, preexisting conditions, and pregnancy before administering a medication.
You need to infuse 1,200 mL of a medication over 6 hours with a drop factor of 10 gtt/mL. Calculate the flow rate in drops per minute.
- A. 30 gtt/min
- B. 33 gtt/min
- C. 40 gtt/min
- D. 50 gtt/min
Correct Answer: B
Rationale: Flow rate = (1,200 mL 10 gtt/mL) ÷ (6 60) = 12,000 ÷ 360 = 33.33 gtt/min, rounded to 33 gtt/min (same as Q4).