ATI Pharmacology Quizlet

Correct Answer: C

Rationale: Lovastatin should be taken at bedtime because cholesterol production in the liver is highest at night, making the medication more effective in reducing cholesterol levels. By taking it at bedtime, the medication aligns with the body's natural rhythm of cholesterol synthesis, optimizing its therapeutic effects.

Correct Answer: B

Rationale: Dopamine, when administered at a low dose, acts on beta1 receptors in the heart, leading to increased myocardial contractility. This positive inotropic effect results in improved cardiac output, which is beneficial for a client with severe heart failure. Dopamine does not typically cause lowered heart rate, decreased conduction through the AV node, or vasoconstriction of renal blood vessels at low doses.

Correct Answer: C

Rationale: The nurse should monitor the client for neutropenia when receiving hydroxyurea, as it is a common adverse effect caused by bone marrow suppression. Neutropenia increases the risk of infections, making it crucial for the nurse to closely monitor the client's white blood cell count.

Correct Answer: B

Rationale: Allopurinol can increase the risk of kidney stones as a side effect. To prevent this adverse effect, it is essential for the client to increase their fluid intake. Adequate hydration can help in preventing the formation of kidney stones by keeping urine dilute and flushing out substances that can lead to stone formation.

Correct Answer: B

Rationale: Dopamine, when administered at a low dose, is expected to increase myocardial contractility by stimulating beta1 receptors. This positive inotropic effect leads to an increase in cardiac output. Therefore, the correct answer is increased myocardial contractility, as it is a desired effect of administering dopamine to a client with severe heart failure.