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Patients who have a poor metabolism phenotype will have:
- A. Slowed metabolism of a prodrug into an active drug, leading to accumulation of prodrug
- B. Accumulation of inactive metabolites of drugs
- C. A need for increased dosages of medications
- D. Increased elimination of an active drug
Correct Answer: A
Rationale: Poor metabolizers (e.g., CYP2D6) slowly convert prodrugs to active forms , causing prodrug buildup, not metabolite accumulation or faster elimination .
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If an agonist can produce submaximal effects and has moderate efficacy it's called:
- A. Partial agonist
- B. Antagonist
- C. Agonist-antagonist
- D. Full agonist
Correct Answer: A
Rationale: A partial agonist produces a submaximal effect even at full receptor occupancy.
Drug levels should be monitored in the treatment of
- A. Diabetes
- B. Epilepsy
- C. Status Asthmatics
- D. Hypertension
Correct Answer: B
Rationale: Therapeutic drug monitoring is critical in epilepsy (e.g., phenytoin) due to narrow therapeutic ranges.
The nurse, assisting with Phase I drug studies, is talking with a woman who asks, Why can't I participate in this study? What would be the nurse's best response?
- A. Drugs pose a greater risk to women of reproductive age.
- B. Drugs are only tested on men because they are stronger.
- C. Women are more prone to adverse effects from medications.
- D. Drugs affect women differently than they affect women.
Correct Answer: A
Rationale: Phase I drug trials usually involve healthy male volunteers because chemicals may exert an unknown and harmful effect on ova in women which could result in fetal damage when the woman becomes pregnant. Drugs are tested on both men and women, but women must be fully informed of risks and sign a consent stating they understand the potential for birth defects. Women are not more prone to adverse effects of medications. Although some drugs may affect women differently than men, this is a rationale for why drugs need to be tested on women, not an explanation of why women are not included in a phase I study.
A nurse is reviewing the health record of a client who asks about using Propranolol to treat hypertension. The nurse should recognize which of the following conditions is a contraindication for taking propranolol?
- A. Asthma
- B. Glaucoma
- C. Hypertension
- D. Tachycardia
Correct Answer: A
Rationale: Propranolol is contraindicated in asthma due to risk of bronchoconstriction.
Glucocorticoids enhance:
- A. Inhibition of phospholipase A2 in leukocytes with stimulation of annexin synthesis
- B. Decrease of thrombocyte activating factor via inhibition of 5 lipooxigenase
- C. Inhibition of leukotriene synthesis and decrease of lyso-glycerilphosphorilcholine production
- D. inhibition of prostaglandin synthesis via blocking 12 lypooxigenase
Correct Answer: A
Rationale: Glucocorticoids inhibit phospholipase A2, reducing inflammatory mediators by stimulating annexin (lipocortin) synthesis.