Nokea
A patient is brought to the emergency department by a family member. The patient reports seeing colored lights and describes feeling bugs crawling under the skin. The nurse suspects that this patient is abusing which drug?
- A. Alcohol
- B. Cocaine
- C. LSD
- D. Methamphetamine
Correct Answer: B
Rationale: Cocaine causes stimulant psychosis with visual (lights) and tactile (bugs) hallucinations; LSD differs in effect. A stimulant psychosis can occur with chronic use of any stimulant and, with cocaine, progresses to visual hallucinations of colored lights and tactile hallucinations of bugs crawling under the skin.
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Glucocorticoids:
- A. Decrease amount of immunocompetent cells and macrophages in the blood
- B. Stimulate activity of macrophages and monocytes
- C. Increase amount of T lymphocytes
- D. Stimulate production of antibodies
Correct Answer: A
Rationale: Glucocorticoids reduce immunocompetent cells and macrophages, contributing to their immunosuppressive effects.
A nurse is teaching a client who has a new prescription for digoxin to treat heart failure. Which of the following instructions should the nurse include in the teaching?
- A. Contact provider if heart rate is less than 60/min.
- B. Check pulse rate for 30 seconds and multiply result by 2.
- C. Increase intake of sodium.
- D. Take with food if nausea occur
Correct Answer: A
Rationale: Bradycardia (<60/min, A) is a sign of digoxin toxicity to report; pulse should be checked for 1 minute.
Which of the following is NOT true regarding ligand-gated ion channels?
- A. React quickly to a stimulus or ligand
- B. Can have intracellular binding sites
- C. Can exhibit allosteric binding
- D. Open or close in response to deformations in the cell membrane
Correct Answer: D
Rationale: Ligand-gated channels respond to ligands, not mechanical deformation (which is typical of mechanosensitive channels).
Which of the following reflects a nurse's responsibility when a drug is prescribed for a client? (Select one that does not apply.)
- A. Administering the drug to the client
- B. Monitoring for therapeutic response
- C. Checking for drug-drug interactions
- D. Reporting adverse reactions
Correct Answer: C
Rationale: When a drug is prescribed to a client, the nurse is responsible for the administration of the drug, monitoring for therapeutic effects, reporting adverse drug reactions, and teaching the client information needed to administer the drug safely at home. A pharmacist checks for drug-drug interactions prior to dispensing a drug for administration.
The patient is a 6-year-old child who is taking 125 mg of amoxicillin every 6 hours. Assuming that the half-life of Amoxicillin is 3 hours, how much Amoxicillin would be in the child's body at the time of the next administration of the drug?
- A. 62.5 mg
- B. 46.875 mg
- C. 31.25 mg
- D. 15.625 mg
Correct Answer: C
Rationale: The half-life of a drug is the time it takes for the amount of drug in the body to decrease to 1 half the peak level it previously achieved. Option A would occur at 3 hours after the original dose of amoxicillin. Option B would occur 4½ hours after the original dose. Option C would occur at 6 hours after the original dose. Option D would occur at 7½ hours after the original dose.