Nokea
All are pro drugs except
- A. Sulindac
- B. Codeine
- C. Talampicillin
- D. Chlorpromazine
Correct Answer: D
Rationale: Chlorpromazine is active as is; others are prodrugs.
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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.
A nurse is teaching a client who has schizophrenia strategies to cope with anticholinergic effects of Fluphenazine. Which of the following should the nurse suggest to the client to minimize anticholinergic effects?
- A. Take the medication in the morning to prevent insomnia.
- B. Chew sugarless gum to moisten the mouth.
- C. Use cooling measures to decrease fever.
- D. Take an antacid to relieve nausea
Correct Answer: B
Rationale: Chewing gum relieves dry mouth, a common anticholinergic effect of fluphenazine.
Renal damage is a potential adverse effect of aminoglycosides. In what part of the kidney are aminoglycosides retained which causes this effect?
- A. Distal tubule
- B. Proximal tubule
- C. Loop of Henle
- D. Glomerulus
Correct Answer: B
Rationale: Aminoglycosides are nephrotoxic and accumulate in the proximal tubule, leading to cellular damage and potential renal impairment.
Patients who are on chronic long-term proton pump inhibitor therapy require monitoring for:
- A. Iron deficiency anemia, vitamin B12 and calcium deficiency
- B. Folate and magnesium deficiency
- C. Elevated uric acid levels leading to gout
- D. Hypokalemia and hypocalcemia
Correct Answer: A
Rationale: PPIs impair absorption of iron, B12, and calcium long-term; magnesium is also a risk but less emphasized here.
Where are tight junctions created by two adjoining cells located?
- A. Bone
- B. Brain
- C. Skin
- D. Liver
Correct Answer: B
Rationale: Tight junctions are prominent in the brain (blood-brain barrier), restricting drug entry, unlike the liver (fenestrated) or bone/skin (different barriers).