A nurse in an urgent care center is assessing a client who reports a sudden onset of irregular palpitations, fatigue, and dizziness. The nurse finds a rapid and irregular heart rate with a significant pulse deficit. Which of the following dysrhythmias should the nurse expect to find on the ECG?
Sinus bradycardia
Sinus tachycardia
Atrial fibrillation
First-degree AV block
The Correct Answer is C
Choice A Reason: This is incorrect. Sinus bradycardia is a slow and regular heart rate that originates from the sinus node. It does not cause irregular palpitations, fatigue, or dizziness, unless the heart rate is very low or the client has underlying cardiac disease.
Choice B reason: This is incorrect. Sinus tachycardia is a fast and regular heart rate that originates from the sinus node. It may cause fatigue or dizziness, but not irregular palpitations or pulse deficit.
Choice C Reason: This is correct. Atrial fibrillation is a fast and irregular heart rate that originates from multiple foci in the atria. It causes irregular palpitations, fatigue, dizziness, and pulse deficit due to ineffective atrial contractions and variable ventricular response.
Choice D Reason: This is incorrect. First-degree AV block is a delay in the conduction of impulses from the atria to the ventricles. It does not affect the heart rate or rhythm, and does not cause any symptoms.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A Reason: This is incorrect because droplet precautions are not sufficient to prevent the transmission of pneumonic plague. Droplet precautions are used to prevent the spread of infectious agents that are expelled through coughing, sneezing, or talking and travel only a short distance in the air. Droplet precautions include wearing a surgical mask, gown, and gloves, and placing the client in a private room or with a roommate who has the same infection.
Choice B Reason: This is incorrect because administering an antitoxin is not an intervention for pneumonic plague. An antitoxin is a substance that neutralizes the effects of a toxin produced by a microorganism. Pneumonic plague is not caused by a toxin, but by a bacterial infection.
Choice C Reason: This is correct because initiating airborne precautions is an intervention for pneumonic plague. Airborne precautions are used to prevent the spread of infectious agents that can remain suspended in the air and travel over long distances. Pneumonic plague is a severe and potentially fatal infection caused by the bacterium Yersinia pestis, which can be transmited through respiratory droplets or aerosols. Airborne precautions are used to prevent the spread of infectious agents that can remain suspended in the air and travel over long distances. Airborne precautions include wearing a respirator or N95 mask, placing the client in a negative-pressure room with an air filtration system, and limiting visitors and staff contact.
Choice D Reason: This is incorrect because destroying the linens after use is not an intervention for pneumonic plague. Linens that are contaminated with body fluids or secretions should be handled with gloves and placed in leak-proof bags for laundering or disposal, but they do not need to be destroyed.
Correct Answer is C
Explanation
Choice A Reason: This is incorrect. The balloons should not be deflated without a physician's order, as this can cause rebleeding or aspiration.
Choice B Reason: This is incorrect. The head of the bed should be elevated to 30 to 45 degrees to reduce pressure on the balloons and prevent gastric reflux.
Choice C Reason: This is correct. The nurse should monitor the client closely for signs of complications, such as airway obstruction, aspiration, or balloon rupture. The nurse should also keep scissors at the bedside to cut the tube and release the balloons in case of an emergency.
Choice D Reason: This is incorrect. The tube should not be suctioned, as this can damage the mucosa and cause bleeding. The nurse should only aspirate gastric contents through the gastric lumen to decompress the stomach.
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