A nurse is caring for a client who is alert and oriented and is receiving continuous ECG monitoring.
The cardiac rhythm strip shows a wavy baseline, no distinguishable P waves, and an increased heart rate.
The nurse should identify the cardiac rhythm as which of the following?
Atrial fibrillation.
Ventricular asystole.
Second-degree heart block.
Sinus tachycardia.
The Correct Answer is A
Choice A rationale:
The described cardiac rhythm with a wavy baseline, no distinguishable P waves, and an increased heart rate is consistent with atrial fibrillation. In atrial fibrillation, the atria quiver instead of contracting effectively, leading to an irregular and often rapid heart rate. This rhythm is characterized by the absence of distinct P waves on the ECG.
Choice B rationale:
Ventricular asystole is a flatline on the ECG, indicating the absence of electrical activity in the heart. It is a life-threatening arrhythmia and requires immediate intervention with cardiopulmonary resuscitation (CPR) and advanced cardiac life support (ACLS) protocols.
Choice C rationale:
Second-degree heart block is characterized by intermittent failure of atrial electrical impulses to conduct to the ventricles. This results in occasional dropped beats and a varying heart rate. It is not consistent with the described ECG findings in the question.
Choice D rationale:
Sinus tachycardia is a regular, fast heart rate originating from the sinoatrial (SA) node. In sinus tachycardia, P waves are present, indicating that the electrical impulses originate in the SA node. The described ECG findings do not match the characteristics of sinus tachycardia.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
The correct answer is choice a. Maternal hypoglycemia.
Choice A rationale:
Maternal hypoglycemia can lead to decreased glucose availability for the fetus, which can result in fetal bradycardia due to reduced energy supply.
Choice B rationale:
Fetal anemia typically causes fetal tachycardia rather than bradycardia, as the fetus compensates for the lack of oxygen-carrying capacity by increasing the heart rate.
Choice C rationale:
Chorioamnionitis, an infection of the fetal membranes, usually causes fetal tachycardia due to the inflammatory response and fever.
Choice D rationale:
Maternal fever is more likely to cause fetal tachycardia rather than bradycardia, as the increased maternal temperature can lead to an increased fetal heart rate.
Correct Answer is A
Explanation
Choice A rationale:
Identifying possible precipitating factors related to the infections is the first step in addressing the issue of increased catheter infections. Understanding the potential causes, such as poor catheter insertion techniques, inadequate hygiene practices, or contaminated equipment, can help the nurse pinpoint the areas that need improvement. By identifying these factors, the nurse can implement targeted interventions to prevent future infections.
Choice B rationale:
Meeting with providers to discuss measures to decrease infections is a valid step, but it should come after identifying the specific factors contributing to the infections. Without a clear understanding of the root causes, the discussion with providers may lack focus and may not lead to effective solutions.
Choice C rationale:
Revising the current policy for catheter care can be considered after identifying the precipitating factors. Policy revision should be based on evidence-based practices and a thorough understanding of the issues contributing to the infections. Simply revising the policy without addressing the underlying causes may not lead to significant improvements.
Choice D rationale:
Scheduling nursing staff training for infection control procedures is an important step in preventing infections, but it should also follow the identification of specific issues related to the catheter infections. Training programs can be tailored to address the identified problems and provide targeted education to the staff members involved.
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