Nokea
Therapeutic index of a drug is an indicator of
- A. Potency
- B. Safety
- C. Toxicity
- D. Efficacy
Correct Answer: C
Rationale: Therapeutic index (TD50/ED50) measures the margin between therapeutic and toxic doses.
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Which of the following glucocorticosteroids are used for cerebral oedema:
- A. Triamcinolon
- B. Prednisolon
- C. Prednison
- D. Dexamethasone
Correct Answer: D
Rationale: Dexamethasone is preferred for cerebral edema due to its potent anti-inflammatory effects and minimal mineralocorticoid activity.
A nurse is caring for a client who is prescribed Isosorbide Mononitrate for chronic stable Angina and develops reflex tachycardia. Which of the following medications should the nurse expect to administer?
- A. Furosemide
- B. Captopril
- C. Ranolazine
- D. Metoprolol
Correct Answer: D
Rationale: Metoprolol , a beta-blocker, treats reflex tachycardia by slowing heart rate.
A nurse is reviewing the order for a medication. Which of the following must be included?
- A. Client's name
- B. Drug name
- C. Dosage form
- D. All the above
Correct Answer: D
Rationale: A primary health care provider's order must include the client's name, the drug name, the dosage form and route, the dosage to be administered, and the frequency of administration.
The following drug causes a decrease in aqueous humour secretions from the ciliary body:
- A. Propranolol
- B. Nadolol
- C. Carvedilol
- D. Timolol
Correct Answer: D
Rationale: Timolol, a beta-blocker, reduces aqueous humor production in glaucoma.
Aminoglycosides work by irreversibly binding to the 30 ribosomal subunit.
- A. TRUE
- B. FALSE
Correct Answer: A
Rationale: Aminoglycosides irreversibly bind to the 30S ribosomal subunit, disrupting bacterial protein synthesis and leading to bactericidal effects.