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
- . Answer and explanation.
The correct answer is choice C, first-degree atrioventricular block.
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 B
Explanation
The correct answer is choice B. Using an electronic messaging system to remind clients when to take medications. Tertiary prevention in healthcare involves measures taken to reduce the impact of an ongoing illness or injury that has lasting effects. This is done by helping people manage long-term, often-complex health problems and injuries in order to improve as much as possible their ability to function, their quality of life, and their life expectancy. In the context of an HIV clinic, reminding clients to take their medications can help manage the disease effectively and prevent complications.
Choice A rationale:
Educating clients about contraindications to specific immunizations is incorrect because this is more aligned with primary prevention, which aims to prevent the onset of an illness or injury before the disease process begins.
Choice C rationale:
Providing clients with information about the benefits of exercise is incorrect as this is generally considered a part of primary prevention, promoting general health to prevent various diseases.
Choice D rationale:
Helping clients understand health screenings covered by their insurance plans is incorrect because this is typically associated with secondary prevention, which involves screening to identify diseases in the earliest stages.
Correct Answer is B
Explanation
Choice A reason:
Explaining the procedure to the client before verifying informed consent is not an appropriate action: While it is essential to explain the procedure to the client and ensure they have a clear understanding of what they are consenting to, this step typically occurs before the informed consent form is presented. The purpose of the informed consent form is to document that the client has received adequate information and has given their consent voluntarily
Choice B reason:
Confirming the client's signature is authentic is the correct action. Verifying the record of informed consent for a client scheduled for surgery involves several important steps. Of these, the nurse's primary responsibility is to ensure that the client's signature on the informed consent form is authentic. This means ensuring that the client themselves or their authorized representative has signed the form willingly and without coercion.
Choice C reason:
Providing information on the informed consent form about the benefits of the surgery is not an appropriate action: The informed consent form typically contains information about the procedure, its risks, possible complications, and alternatives, but it is not the nurse's responsibility to provide this information. The healthcare provider or surgeon is responsible for explaining the details of the surgery to the client before obtaining their consent.
Choice D reason:
Informing the client about the condition that requires treatment is not an appropriate action: The responsibility of informing the client about their medical condition, the need for treatment, and the available options lies with the healthcare provider or surgeon, not the nurse. The nurse may assist in providing information or answering questions, but the primary responsibility for discussing the medical condition lies with the provider.
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