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?
Atrial fibrillation.
Complete heart block.
First-degree atrioventricular block.
Premature atrial complexes.
The Correct Answer is C
This is because the PR interval is longer than normal, which indicates a delay in the conduction of electrical impulses from the atria to the ventricles through the AV node. A normal PR interval is 0.12 to 0.2 seconds, or 3 to 5 small squares on the EKG strip. In this case, the PR interval is 0.35 seconds, which is more than 5 small squares.
Choice A is wrong because atrial fibrillation is a type of arrhythmia where the atria beat irregularly and rapidly, producing chaotic and variable P waves and an irregular ventricular response.
There is no constant PR interval in atrial fibrillation.
Choice B is wrong because complete heart block is a type of arrhythmia where there is no conduction of electrical impulses from the atria to the ventricles, resulting in independent and dissociated atrial and ventricular rhythms.
There are no consistent P waves or PR intervals in complete heart block.
Choice D is wrong because premature atrial complexes are extra beats that originate from the atria and interrupt the normal sinus rhythm.
They produce abnormal P waves that are different from the sinus P waves, and may have a shorter or longer PR interval depending on the timing of the impulse.
However, they do not cause a constant prolongation of the PR interval.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
The correct answer is choice C: Document the client’s behavior prior to being placed in seclusion.
Choice A rationale:
Discussing with the client his inappropriate behavior prior to seclusion is important, but it’s not the most appropriate action. The priority is to ensure the safety of the client and others, which can be achieved by documenting the client’s behavior prior to seclusion.
Choice B rationale:
Offering fluids every 2 hours is a good practice to keep the client hydrated, especially if they are agitated or physically active. However, this is not the most appropriate action in this context.
Choice C rationale:
Documenting the client’s behavior prior to being placed in seclusion is the most appropriate action. This documentation is crucial for legal and ethical reasons, and it helps in evaluating the effectiveness of the intervention.
Choice D rationale:
Assessing the client’s behavior once every hour is important to monitor the client’s condition and response to seclusion. However, this is not the most appropriate action in this context.
Correct Answer is D
Explanation
This is because bleeding after a cardiac catheterization is a possible complication that can occur when a catheter is inserted into an artery in the groin or arm to examine the heart. Bleeding can drip or spurt from the puncture site, or form a lump under the skin called a hematoma. Applying continuous pressure above the site can help stop the bleeding and prevent hematoma formation.
Choice A is wrong because applying intermittent pressure 2.5 cm (1 in) above the percutaneous skin site may not be enough to control the bleeding and may increase the risk of hematoma.
Choice B is wrong because applying intermittent pressure 2.5 cm (1 in) below the percutaneous skin site may not be effective and may cause more damage to the artery.
Choice C is wrong because applying continuous pressure 2.5 cm (1 in) below the percutaneous skin site may also be ineffective and harmful to the artery.
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