Nokea
If an agonist can produce submaximal effects and has moderate efficacy it's called:
- A. Partial agonist
- B. Antagonist
- C. Agonist-antagonist
- D. Full agonist
Correct Answer: A
Rationale: A partial agonist produces a submaximal effect even at full receptor occupancy.
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Which of the following concepts is considered when generic drugs are substituted for brand-name drugs?
- A. Bioavailability
- B. Critical concentration
- C. Distribution
- D. Half-life
Correct Answer: A
Rationale: Bioavailability is the portion of a dose of a drug that reaches the systemic circulation and is available to act on body cells. Binders used in a generic drug may not be the same as those used in the brand-name drug. Therefore, the way the body breaks down and absorbs the drug may differ, affecting its bioavailability.
A nurse is providing teaching to a client who has a new prescription for Amitriptyline for treatment of depression. Which of the following should the nurse include in the teaching?
- A. Expect therapeutic effects in 24 to 48 hr.
- B. Discontinue the medication after a week of improved mood.
- C. Change positions slowly to minimize dizziness.
- D. Decrease injury from the first dose.
Correct Answer: C
Rationale: Slow position changes prevent dizziness, and chewing gum relieves dry mouth, common with tricyclics like amitriptyline.
A nurse is required to give an intramuscular (IM) injection to an 18-month-old toddler. The nurse would prepare which site for administration?
- A. Dorsogluteal site
- B. Deltoid muscle
- C. Vastus lateralis
- D. Ventrogluteal site
Correct Answer: C
Rationale: The vastus lateralis site is frequently used for infants and small children because it is more developed than the other intramuscular sites such as the dorsogluteal and deltoid muscle. Ventrogluteal sites may be used in children who have been ambulating for more than 2 years.
No physical dependence is seen in:
- A. Dextropropoxyphene
- B. Fortwin
- C. Fluoxetine
- D. Alprax
Correct Answer: C
Rationale: Fluoxetine (SSRI) has no physical dependence; others do.
Choose an antihypertensive agent that is most likely to produce tachycardia, fluid retention and hirsutism?
- A. Captopril
- B. Guanethidine
- C. Minoxidil
- D. Prazosin
Correct Answer: C
Rationale: Minoxidil causes reflex tachycardia, fluid retention, and hirsutism.