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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 A

Explanation

Rationale:

A. Petechiae are small, pinpoint red or purple spots on the skin that may indicate bleeding or thrombocytopenia, which can be a side effect of heparin therapy.

B. Slowing pulse rate is not typically associated with heparin therapy.

C. Confusion is not typically associated with heparin therapy.

D. Pruritus (itching) is not typically associated with heparin therapy.

A. Notify the provider of the client's allergy. B. Notify the dietary department of the client's allergy. C. Ask the client if any other foods cause such a reaction. D. Attach a wrist band indicating the client's allergy

Correct Answer is A

Explanation

Rationale:

A. Notifying the provider of the client's allergy is the priority to ensure that appropriate precautions are taken during the cardiac catheterization.

B. Notifying the dietary department is not necessary in this situation.

C. Asking about other foods is important but not the priority at this time.

D. Attaching a wristband indicating the allergy may be done later but is not the priority at this time.

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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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Explanation

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Correct Answer is A

Explanation

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