A nurse is teaching a newly licensed nurse about evaluating cardiac rhythms. Which of the following best explains calculation of the heart rate?

Look for P waves on the strip

Count how many QRS occur in a 6 second strip

Read the monitor or electrocardiogram interpretation.

Measure the T waves

Answer and Explanation

The Correct Answer is B

Rationale:

A. Looking for P waves is important for assessing atrial activity, but it does not directly calculate heart rate.

B. Counting how many QRS complexes occur in a 6-second strip and multiplying by 10 is a quick and accurate way to calculate heart rate.

C. Reading the monitor or ECG interpretation provides information about the rhythm and morphology of the heart, but it does not directly calculate heart rate.

D. Measuring T waves is important for assessing cardiac repolarization, but it does not directly calculate heart rate.

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Correct Answer is B

Explanation

Rationale:

A. Taking a diuretic before sleep and drinking fluids during the day is important but does not specifically address sodium intake.

B. This statement indicates an understanding of the importance of limiting sodium intake, which is crucial in managing congestive heart failure.

C. Pacing activities is important but is not specific to sodium intake.

D. Naproxen is not typically used to manage discomfort in congestive heart failure.

A. Alteplase (fibrinolytics) B. IV Nitroglycerine C. Metoprolol (beta blockers) D. IV Heparin

Correct Answer is B

Explanation

Rationale:

A. Alteplase (fibrinolytics) is used to dissolve clots in coronary arteries during an acute myocardial infarction (AMI).

B. IV Nitroglycerine is a vasodilator that dilates coronary blood vessels, increasing blood flow to the myocardium.

C. Metoprolol (beta blockers) are used to decrease heart rate, blood pressure, and myocardial oxygen demand.

D. IV Heparin is used to prevent further clot formation in coronary arteries during an acute myocardial infarction (AMI).

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A nurse is teaching a newly licensed nurse about evaluating cardiac rhythms. Which of the following best explains calculation of the heart rate?

Nursing Test Bank

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A nurse is teaching a newly licensed nurse about evaluating cardiac rhythms. Which of the following best explains calculation of the heart rate?