Amlodipine (Norvasc) has been ordered for a client with newly diagnosed Prinzmetal's (variant) angina. The nurse knows the purpose of the amlodipine is to do which of the following?

It decreases spasm of the coronary arteries

It increases the force of myocardial contraction

It helps prevent clotting in the coronary arteries.

It reduces the "fight or flight" response.

Answer and Explanation

The Correct Answer is A

A. It decreases spasm of the coronary arteries: Amlodipine is a calcium channel blocker that relaxes vascular smooth muscle, making it effective in treating coronary artery spasms in Prinzmetal's angina.

B. It increases the force of myocardial contraction: Amlodipine does not increase myocardial contractility; it primarily affects vascular tone.

C. It helps prevent clotting in the coronary arteries: Amlodipine is not an anticoagulant or antiplatelet agent.

D. It reduces the "fight or flight" response: Beta-blockers, not amlodipine, are typically associated with reducing the sympathetic nervous system response.

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Correct Answer is A

Explanation

A. First-degree heart block: A prolonged PR interval greater than 0.20 seconds, as seen in this case, indicates first-degree heart block, which is a delay in conduction at the AV node.

B. Second-degree heart block. Second-degree heart block is characterized by some PR intervals being prolonged with occasional dropped beats (non-conducted P waves).

C. Bundle branch block. Bundle branch block causes a wide QRS complex (greater than 0.12 seconds), which is not seen here.

D. Sinus arrhythmia. Sinus arrhythmia involves changes in heart rate due to respiratory cycles, not prolonged PR intervals.

A. Urine glucose, high B. Urine specific gravity, 1.001 C. Urine output, 50 ml/hr D. Urine protein, high

Correct Answer is B

Explanation

A. Urine glucose, high: High urine glucose would suggest hyperglycemia, typically seen in diabetes mellitus, not diabetes insipidus.

B. Urine specific gravity, 1.001: Diabetes insipidus results in excessive urine output with a low specific gravity (dilute urine), reflecting the inability to concentrate urine.

C. Urine output, 50 ml/hr: This is a relatively low urine output, which does not indicate diabetes insipidus. Diabetes insipidus is characterized by very high urine output, often greater than 3 liters per day.

D. Urine protein, high: High urine protein could suggest kidney disease or glomerular injury, not diabetes insipidus.

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Amlodipine (Norvasc) has been ordered for a client with newly diagnosed Prinzmetal's (variant) angina. The nurse knows the purpose of the amlodipine is to do which of the following?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Explanation

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Correct Answer is B

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