Nokea
T½ of a drug can determine all the following
- A. Closing interval
- B. Elimination time
- C. Steady Plasma Concentration
- D. Therapeutic dosage
Correct Answer: D
Rationale: Half-life (t½) informs dosing intervals to maintain therapeutic levels.
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Nicotinic receptors are seen in
- A. Skeletal muscle
- B. Visceral smooth muscle
- C. Cardiac muscle
- D. Salivary glands
Correct Answer: A
Rationale: Nicotinic receptors are primarily at skeletal muscle neuromuscular junctions.
Which of the following glucocorticosteroids are used for cerebral oedema:
- A. Triamcinolon
- B. Prednisolon
- C. Prednison
- D. Dexamethasone
Correct Answer: D
Rationale: Dexamethasone is favored for cerebral edema due to its strong anti-inflammatory properties and low mineralocorticoid activity.
A provider may consider testing for CYP2D6 variants prior to starting tamoxifen for breast cancer to:
- A. Ensure the patient will not have increased adverse effects from the tamoxifen
- B. Identify if the patient is a poor metabolizer, potentially reducing conversion to active metabolites
- C. Evaluate risk of drug interactions with tamoxifen
- D. Determine if the patient requires a higher dose due to ultra-rapid metabolism
Correct Answer: B
Rationale: CYP2D6 testing identifies poor metabolizers who may not convert tamoxifen to its active form (endoxifen), impacting efficacy, not just ADRs or interactions .
The nursing assessment identifies that the client is nauseated and cannot take acetaminophen (Tylenol) orally. Which is true regarding the substitution of this medication to suppository form?
- A. It is standard practice when the patient is unable to take the ordered medication.
- B. It is acceptable if the patient agrees to the altered route form.
- C. It is preferable to having the patient miss a dose of the medication.
- D. It is contraindicated without an order from the health care provider.
Correct Answer: D
Rationale: One dosage form of medication should never be substituted for another unless the prescriber is consulted; there can be a great variation in the absorption rate of the medication through different routes of administration. The substitution of one form for another is not standard practice, and is not acceptable or preferable without the prescriber's order.
Which of the following is a luminal amebecide drug?
- A. Metronidazole
- B. Emtine
- C. Doxycycline
- D. Dicloxinide
Correct Answer: D
Rationale: Diloxanide (likely misspelled as Dicloxinide) is a luminal amebicide used to eradicate cysts of Entamoeba histolytica in the intestinal lumen, unlike metronidazole, which targets systemic infection.