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A nurse is reviewing cardiac rhythms and heart blocks for a critical care course. The nurse is aware that which of the following describes first degree heart block?

The PR interval gets longer then drops.

PR interval greater than 0.20 seconds in duration

There are absent P waves

R-R is irregular

Answer and Explanation

The Correct Answer is B

Rationale:

A. This describes a second-degree heart block, specifically Mobitz Type I (Wenckebach).

B. A PR interval greater than 0.20 seconds is characteristic of first-degree heart block.

C. This describes third-degree heart block, also known as complete heart block.

D. An irregular R-R interval is not specific to first-degree heart block.

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Correct Answer is C

Explanation

Rationale:

A. The client may need an annual flu vaccine, but this is not specific to infective endocarditis.

B. Updating the Covid-19 vaccination is important, but this is not specific to infective endocarditis.

C. The client will require antibiotics before dental work to prevent the spread of bacteria from the mouth to the heart.

D. Avoiding sick contacts is important for general health but is not specific to infective endocarditis.

A. Check your skin for increased bruising B. Missing 1 dose of medication is not a risk C. The client may develop hypothyroidism. D. Hypertension is not a risk factor

Correct Answer is A

Explanation

Rationale:

A. This is important because AFib can lead to blood clots, which may cause bruising or other skin changes.

B. Missing doses of medication can increase the risk of complications in atrial fibrillation.

C. Hypothyroidism is not directly related to AFib. Therefore, this information is not relevant for AFib education.

D. Hypertension is a risk factor for atrial fibrillation.

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A nurse is reviewing cardiac rhythms and heart blocks for a critical care course. The nurse is aware that which of the following describes first degree heart block?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Correct Answer is C

Explanation

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Correct Answer is A

Explanation

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