A nurse provided education to a client newly prescribed a beta-blocker. Which client statement indicates further education is needed?
"I will monitor my heart rate regularly."
"I will eat a diet that is low-potassium."
"I will continue the medication if I get sick."
"Beta-blockers may cause me to feel dizzy."
The Correct Answer is B
A. I will monitor my heart rate regularly: Beta-blockers reduce heart rate by blocking beta-1 adrenergic receptors in the heart. Regular monitoring helps the client detect bradycardia and recognize when to hold the medication or notify the healthcare provider.
B. I will eat a diet that is low-potassium: Beta-blockers do not significantly affect potassium levels in most clients. Dietary potassium restriction is more relevant for medications such as ACE inhibitors or potassium-sparing diuretics, this statement indicate misunderstanding.
C. I will continue the medication if I get sick: Beta-blockers should not be stopped abruptly, even during illness, due to the risk of rebound hypertension or tachycardia. Continuing the medication unless instructed otherwise reflects appropriate understanding.
D. Beta-blockers may cause me to feel dizzy: Dizziness can occur due to decreased blood pressure and reduced cardiac output, especially when starting therapy or changing positions. Awareness of this effect supports safe medication use and fall prevention.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Hypertension: Isosorbide is a nitrate that works as a vasodilator, which lowers blood pressure. It does not cause hypertension; in fact, elevated blood pressure would be counterproductive to its therapeutic effect in angina management.
B. Thrombus formation: Isosorbide does not promote blood clot formation. Its primary action is to dilate blood vessels and reduce myocardial oxygen demand, and it does not have pro-thrombotic effects.
C. Chronic constipation: Constipation is not a recognized side effect of isosorbide. Gastrointestinal disturbances are uncommon, and the medication primarily affects the vascular system rather than intestinal motility.
D. Hypotension: Hypotension is a common side effect of isosorbide due to its vasodilatory action. By relaxing vascular smooth muscle, it can lower systemic blood pressure, sometimes leading to dizziness or lightheadedness, especially when standing.
Correct Answer is A
Explanation
A. Increases cardiac output: Dobutamine is a beta-1 adrenergic agonist that primarily increases the strength of myocardial contractions, leading to enhanced cardiac output. It is commonly used in clients with heart failure or cardiogenic shock to improve tissue perfusion without significantly increasing heart rate.
B. Promotes diuresis: Dobutamine does not have a direct diuretic effect. While improved cardiac output may indirectly enhance renal perfusion and urine output, promoting diuresis is not its primary therapeutic action.
C. Increases blood pressure: Dobutamine may slightly increase systolic blood pressure due to improved cardiac output, but it is not primarily used as an antihypotensive agent. Its main role is enhancing myocardial contractility rather than raising blood pressure.
D. Inhibits platelet aggregation: Dobutamine has no effect on platelet function or aggregation. Its mechanism of action is limited to stimulating beta-1 receptors in the heart to improve contractility.
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