Nokea
Anti-inflammatory action of glucocorticoids is determined by:
- A. Inhibition of phospholipase A2
- B. Activation of phospholipase A2
- C. Inhibition of cyclooxygenase type-1
- D. Inhibition of cyclooxygenase type-2
Correct Answer: A
Rationale: Glucocorticoids inhibit phospholipase A2, reducing the production of inflammatory mediators like prostaglandins.
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Which antiarrhythmic medication is primarily used for atrial fibrillation?
- A. Propranolol
- B. Amiodarone
- C. Digoxin
- D. Verapamil
Correct Answer: B
Rationale: Amiodarone is widely used for atrial fibrillation due to its broad-spectrum antiarrhythmic effects across multiple classes.
Despite good blood pressure control, an NP might change a patient's drug from an angiotensin-converting enzyme (ACE) inhibitor to an angiotensin II receptor blocker (ARB) because the ARB:
- A. Is stronger than the ACE inhibitor
- B. Does not produce a dry, hacky cough
- C. Has no effect on the renal system
- D. Reduces sodium and water retention
Correct Answer: B
Rationale: ARBs lack the cough side effect common with ACE inhibitors.
What does the lipid solubility of the drug influence?
- A. Absorption of the drug
- B. Metabolism of the drug
- C. Excretion of the drug
- D. Distribution of the drug
Correct Answer: D
Rationale: Factors that can affect distribution include the drug's lipid solubility and ionization and the perfusion of the reactive tissue. The lipid solubility of a drug does not influence absorption, metabolism, or excretion.
A patient is ordered to receive a subcutaneous injection of heparin twice a day. When administering this drug to the patient, which of the following would be most important for the nurse to do to minimize tissue damage?
- A. Insert the needle at the appropriate angle.
- B. Select the needle length based on the patient's weight.
- C. Ensure that there is no hair on the injection site.
- D. Rotate the injection site regularly.
Correct Answer: D
Rationale: The nurse should rotate the injection sites to minimize the damage caused to the tissue. Inserting the needle at the proper angle and selecting the needle length based on the patient's weight will not significantly help in minimizing tissue damage if the same site is repeatedly injected. It is not necessary to avoid injection sites that have hair as long as the drug is administered in the upper arms, the upper abdomen, and the upper back.
When a pharmacoeconomic analysis looks at two or more treatment alternatives that are considered equal in efficacy and compares the costs of each it is referred to as:
- A. Cost-minimization analysis
- B. Cost-of-illness analysis
- C. Cost-effectiveness analysis
- D. Cost-benefit analysis
Correct Answer: A
Rationale: Cost-minimization analysis compares costs of equally effective treatments.