A nurse on a telemetry unit is assessing a client who is receiving continuous cardiac monitoring. The client's heart rate is 69/min and the PR interval is 0.24 seconds. The nurse should interpret this finding as which of the following cardiac rhythms?
Atrial fibrillation
First-degree AV block
Premature ventricular contraction
Sinus bradycardia
The Correct Answer is B
The correct answer is B.
Choice A reason: Atrial fibrillation is characterized by a rapid, irregular heartbeat and an absence of distinct P waves on the ECG, which is not indicated by the information provided.
Choice B reason: First-degree AV block is indicated by a prolonged PR interval without affecting the overall heart rate, aligning with the client’s PR interval of 0.24 seconds.
Choice C reason: Premature ventricular contraction would show an abnormal QRS complex on the ECG, which is not mentioned in the scenario.
Choice D reason: Sinus bradycardia is defined by a heart rate less than 60 bpm, which does not apply here as the client’s heart rate is 69/min, within the normal range of 60-100 bpm.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
This is because varicella, or chickenpox, is a highly contagious disease caused by the varicellazoster virus (VZV), which can spread through the air or by direct contact with the fluid from the blisters. A negative air pressure room prevents the air from the room from circulating to other areas of the hospital, reducing the risk of transmission to other patients and staff.
Choice A is wrong because aspirin should not be given to children with chickenpox, as it can cause a serious condition called Reye’s syndrome, which affects the brain and liver. Instead, acetaminophen can be used to reduce fever.
Choice B is wrong because droplet precautions are not enough to prevent the spread of chickenpox. Droplet precautions involve wearing a mask and gloves when in close contact with the patient, but they do not prevent the virus from traveling through the air. Airborne precautions, which include a negative air pressure room and wearing a respirator, are needed for chickenpox.
Choice D is wrong because Koplik spots are not a sign of chickenpox, but of measles, another viral infection that causes a rash. Chickenpox causes an itchy rash with small, fluid-filled blisters that crust over.
Correct Answer is ["B","C","D"]
Explanation
The correct answer is choice B, C, and D. The nurse should give the client one simple direction at a time, reinforce orientation to time, place, and person, and establish eye contact when communicating with the client.
These interventions can help the client with dementia to understand and follow instructions, reduce confusion and anxiety, and enhance communication.
Choice A is wrong because allowing the client to choose among a variety of activities each day can overwhelm and frustrate the client with dementia.
The nurse should provide a structured and consistent daily routine for the client.
Choice E is wrong because refuting the client’s delusions using logic can increase the client’s agitation and distrust.
The nurse should use validation therapy to acknowledge the client’s feelings and emotions without arguing or correcting the client.
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