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. Hyperkalemia is not typically associated with thiazide diuretics.

B. Cardiac dysrhythmias can occur with thiazide diuretics due to electrolyte imbalances.

C. Seizures are not typically associated with thiazide diuretics.

D. Hypoglycemia is not typically associated with thiazide diuretics.

A. Tenormin (Atenolol) B. Heparin C. Keflex (Cephalexin) D. Hold all medications

Correct Answer is A

Explanation

Rationale:

A. Tenormin (Atenolol) is a beta-blocker that reduces the heart rate and may affect the results of the stress test. Therefore, it should be held the morning of the test.

B. Heparin is an anticoagulant and is not typically held before a stress test.

C. Keflex (Cephalexin) is an antibiotic and is not typically held before a stress test.

D. Holding all medications is not necessary for a stress test, but specific medications that may interfere with the test, such as beta-blockers, should be held.

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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

Naxlex Comprehensive Predictor Exams

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Explanation

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Explanation

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