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A nurse is reviewing a client's cardiac rhythm strips and notes a constant P-R interval of
0.35 seconds. Which of the following dysrhythmias is the client displaying?

A.

Premature atrial complexes

B.

Complete heart block

C.

Atrial fibrillation

D.

First-degree atrioventricular block

Answer and Explanation

The Correct Answer is D

A.    Incorrect. Premature atrial complexes do not typically affect the P-R interval. They are characterized by an early P-wave followed by a QRS complex.
B.    Incorrect. Complete heart block is characterized by a dissociation between the P-waves and QRS complexes, resulting in no relationship between atrial and ventricular activity.
C.    Incorrect. Atrial fibrillation is characterized by chaotic and irregular atrial activity without distinct P-waves, making the P-R interval irrelevant.
D.    Correct. In first-degree atrioventricular block, the P-R interval is prolonged beyond the normal range of 0.12-0.20 seconds. A constant P-R interval of 0.35 seconds indicates a first- degree atrioventricular block.


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Related Questions

Correct Answer is C

Explanation

A. Incorrect. While some gestures can be helpful in communication, they might not always convey complex medical information accurately.

B. Incorrect. Speaking slowly might not necessarily enhance understanding, especially if the client's primary language is different from the nurse's.

C. Correct. When using an interpreter, the nurse should address the client directly and speak as if they are having a direct conversation with the client.

D. Incorrect. Pausing in the middle of sentences can disrupt the flow of communication and might not facilitate understanding.

Correct Answer is D

Explanation

A. Incorrect. Premature atrial complexes do not typically affect the P-R interval. They are characterized by an early P-wave followed by a QRS complex.
B. Incorrect. Complete heart block is characterized by a dissociation between the P-waves and QRS complexes, resulting in no relationship between atrial and ventricular activity.
C. Incorrect. Atrial fibrillation is characterized by chaotic and irregular atrial activity without distinct P-waves, making the P-R interval irrelevant.
D. Correct. In first-degree atrioventricular block, the P-R interval is prolonged beyond the normal range of 0.12-0.20 seconds. A constant P-R interval of 0.35 seconds indicates a first- degree atrioventricular block.

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