Nokea
Student nurses are learning to weigh patients and do vital signs. How does a correct weight impact administering medication?
- A. Proper dosage calculation
- B. Assessing changes in fluid balance
- C. Assessing changes in nutritional status
- D. Caloric needs
Correct Answer: A
Rationale: Accurate weight is essential for calculating correct medication dosages, especially for weight-based drugs.
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Which of the following statement is correct for Amantadine?
- A. Has agonistic action on NDMA type of glutamate receptors
- B. It was developed as antiepileptic drug
- C. Acts as a D2 blocker
- D. Produces livedo reticularis as side effect
Correct Answer: D
Rationale: Amantadine, an antiviral and antiparkinsonian drug, can cause livedo reticularis (a skin mottling side effect); it blocks NMDA receptors, not agonizes them, and enhances dopamine release, not blocks D2.
What is a prodrug
- A. Drag which increases efficiency of another drug
- B. Metabolic end product
- C. Inactive drag which gets activated in the body
- D. Drag which competes with another for metabolism
Correct Answer: C
Rationale: A prodrug is inactive until metabolized into an active form in the body.
All of the following adverse effects commonly occur in glucocorticoid therapy except:
- A. Osteoporosis
- B. Increased risk of infection
- C. Hypotension
- D. Emotional disturbances
Correct Answer: C
Rationale: Glucocorticoids cause hypertension, not hypotension, due to mineralocorticoid effects and fluid retention.
Pharmacokinetic factors that affect prescribing include:
- A. Therapeutic index
- B. Minimum effective concentration
- C. Bioavailability
- D. Ease of titration
Correct Answer: C
Rationale: Bioavailability directly impacts how much drug reaches circulation, a key pharmacokinetic factor, unlike therapeutic index or titration ease .
A patient presents to the emergency department with a drug level of 50 units/mL. The half-life of this drug is 1 hour. With this drug, concentrations above 25 units/mL are considered toxic and no more drug is given. How long will it take for the blood level to reach the non-toxic range?
- A. 30 minutes
- B. 1 hour
- C. 2 hours
- D. 3 hours
Correct Answer: B
Rationale: Half-life is the time required for the serum concentration of a drug to decrease by 50%. After 1 hour, the serum concentration would be 25 units/mL (50/2) if the body can properly metabolize and excrete the drug. After 2 hours, the serum concentration would be 12.5 units/mL (25/2) and reach the nontoxic range. In 30 minutes the drug level would be 37.5 units/mL, whereas in 3 hours the drug level would be 6.25.