Nokea
Choose the correct statement about ondansetron:
- A. It is a dopamine D2 receptor antagonist
- B. It suppresses postoperative nausea and vomiting
- C. It is the most effective antiemetic for motion sickness
- D. It is not effective by oral route
Correct Answer: B
Rationale: Ondansetron, a 5-HT3 receptor antagonist, effectively suppresses postoperative nausea and vomiting; it's less effective for motion sickness and is effective orally.
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Beta blockers have favorable effects on survival and disease progression in heart failure. Treatment should be initiated when the:
- A. Symptoms are severe
- B. Patient has not responded to other therapies
- C. Patient has concurrent hypertension
- D. Left ventricular dysfunction is diagnosed
Correct Answer: D
Rationale: Beta blockers are initiated upon diagnosis of left ventricular dysfunction to improve outcomes.
Lispro is an insulin analogue produced by recombinant DNA technology. Which of the following statements about this form of insulin is NOT true?
- A. Optimal time of preprandial injection is 15 minutes
- B. Duration of action is increased when the dose is increased
- C. It is compatible with neutral protamine Hagedorn insulin
- D. It has no pronounced peak
Correct Answer: B
Rationale: Lispro's duration is fixed (3-5 hours), not dose-dependent; 15-minute timing , NPH compatibility , and peakless profile are true.
A pharmacology student asks the instructor what an accurate description of a drug agonist is. What is the instructor's best response?
- A. A drug that reacts with a receptor site on a cell preventing a reaction with another chemical on a different receptor site
- B. A drug that interferes with the enzyme systems that act as catalyst for different chemical reactions
- C. A drug that interacts directly with receptor sites to cause the same activity that a natural chemical would cause at that site
- D. A drug that reacts with receptor sites to block normal stimulation, producing no effect
Correct Answer: C
Rationale: Agonists are drugs that produce effects similar to those produced by naturally occurring neurotransmitters, hormones, or other substances found in the body. Noncompetitive antagonists are drugs that react with some receptor sites preventing the reaction of another chemical with a different receptor site. Drug-enzyme interactions interfere with the enzyme systems that stimulate various chemical reactions.
A nurse is teaching a female client who has tobacco use disorder about Nicotine replacement therapy. Which of the following statements by the client indicates understanding of the teaching?
- A. I should avoid eating right before I chew a piece of nicotine gum.
- B. I will need to stop using the nicotine gum after 1 year.
- C. I know that nicotine gum is a safe alternative to resulting if I become pregnant.
- D. I must chew the nicotine gum quickly for about 15 minutes.
Correct Answer: A
Rationale: Avoiding food before chewing enhances nicotine absorption; gum isn't safe in pregnancy, and chewing is slow.
A nurse on a medical-surgical unit administers a hypnotic medication to an older adult client at 2100 . The next morning, the client is drowsy and wants to sleep instead of eating breakfast. Which of the following factors should the nurse identify as a possible reason for the client's drowsiness?
- A. Reduced cardiac function
- B. First pass effect
- C. Reduced hepatic function
- D. Increased gastric motility
Correct Answer: C
Rationale: Reduced hepatic function in older adults slows metabolism of hypnotics, prolonging drowsiness.